{
 "instance": {
  "d191686ds4.htm": {
   "axisCustom": 0,
   "axisStandard": 42,
   "contextCount": 582,
   "dts": {
    "calculationLink": {
     "local": [
      "lamr-20210331_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "lamr-20210331_def.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-eedm-def-2020-01-31.xml",
      "http://xbrl.fasb.org/srt/2020/elts/srt-eedm1-def-2020-01-31.xml"
     ]
    },
    "inline": {
     "local": [
      "d191686ds4.htm"
     ]
    },
    "labelLink": {
     "local": [
      "lamr-20210331_lab.xml"
     ],
     "remote": [
      "http://xbrl.fasb.org/srt/2020/elts/srt-doc-2020-01-31.xml",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-doc-2020-01-31.xml",
      "https://xbrl.sec.gov/dei/2020/dei-doc-2020-01-31.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "lamr-20210331_pre.xml"
     ]
    },
    "referenceLink": {
     "remote": [
      "http://xbrl.fasb.org/srt/2020/elts/srt-ref-2020-01-31.xml",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-ref-2020-01-31.xml",
      "https://xbrl.sec.gov/dei/2020/dei-ref-2020-01-31.xml"
     ]
    },
    "schema": {
     "local": [
      "lamr-20210331.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "https://xbrl.sec.gov/dei/2020/dei-2020-01-31.xsd",
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-gaap-2020-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-roles-2020-01-31.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-2020-01-31.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-types-2020-01-31.xsd",
      "http://xbrl.fasb.org/srt/2020/elts/srt-roles-2020-01-31.xsd",
      "https://xbrl.sec.gov/country/2020/country-2020-01-31.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-types-2020-01-31.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "https://xbrl.sec.gov/currency/2020/currency-2020-01-31.xsd",
      "https://xbrl.sec.gov/exch/2020/exch-2020-01-31.xsd",
      "https://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd",
      "https://xbrl.sec.gov/sic/2020/sic-2020-01-31.xsd",
      "https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd",
      "http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/deprecated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "http://xbrl.fasb.org/us-gaap/2020/elts/us-parts-codification-2020-01-31.xsd"
     ]
    }
   },
   "elementCount": 849,
   "entityCount": 1,
   "hidden": {
    "http://fasb.org/us-gaap/2020-01-31": 108,
    "http://xbrl.sec.gov/dei/2020-01-31": 3,
    "total": 111
   },
   "keyCustom": 123,
   "keyStandard": 514,
   "memberCustom": 61,
   "memberStandard": 47,
   "nsprefix": "lamr",
   "nsuri": "http://lamar.com/20210331",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "1001 - Document - Cover",
     "role": "http://lamar.com/role/Cover",
     "shortName": "Cover",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentType",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R10": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BusinessCombinationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1010 - Disclosure - Acquisitions",
     "role": "http://lamar.com/role/Acquisitions",
     "shortName": "Acquisitions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BusinessCombinationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R100": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "lamr:NumberOfSingleAssetContributionOnGrossCarryingAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Asset",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1100 - Disclosure - Schedule III - Schedule of Real Estate and Accumulated Depreciation (Parenthetical) (Detail)",
     "role": "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
     "shortName": "Schedule III - Schedule of Real Estate and Accumulated Depreciation (Parenthetical) (Detail)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "lamr:NumberOfSingleAssetContributionOnGrossCarryingAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Asset",
      "xsiNil": "false"
     }
    },
    "R101": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RealEstateGrossAtCarryingValue",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1101 - Disclosure - Schedule III - Summary of Company's Real Estate Assets (Detail)",
     "role": "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
     "shortName": "Schedule III - Summary of Company's Real Estate Assets (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "lang": null,
      "name": "lamr:RealEstateCapitalExpenditureOnAdvertisementDisplays",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R102": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_NewAdvertisingDisplaysMembersrtRealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1102 - Disclosure - Schedule III - Summary of Company's Real Estate Assets (Parenthetical) (Detail)",
     "role": "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail",
     "shortName": "Schedule III - Summary of Company's Real Estate Assets (Parenthetical) (Detail)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_NewAdvertisingDisplaysMembersrtRealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R103": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AssetsCurrent",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1103 - Disclosure - Condensed Consolidating Balance Sheet (Detail)",
     "role": "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
     "shortName": "Condensed Consolidating Balance Sheet (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021_LamarMediaCorporationAndSubsidiariesMemberdeiLegalEntityAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:AssetsCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R104": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1104 - Disclosure - Condensed Consolidating Statements of Income and Comprehensive Income (Detail)",
     "role": "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
     "shortName": "Condensed Consolidating Statements of Income and Comprehensive Income (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ScheduleOfCondensedIncomeStatementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMemberdeiLegalEntityAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R105": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1105 - Disclosure - Condensed Consolidating Statement of Cash Flows (Detail)",
     "role": "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
     "shortName": "Condensed Consolidating Statement of Cash Flows (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ScheduleOfCondensedCashFlowStatementTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMemberdeiLegalEntityAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:NetCashProvidedByUsedInOperatingActivities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R11": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1011 - Disclosure - Non-cash Financing Activities",
     "role": "http://lamar.com/role/NonCashFinancingActivities",
     "shortName": "Non-cash Financing Activities",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R12": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1012 - Disclosure - Property, Plant and Equipment",
     "role": "http://lamar.com/role/PropertyPlantAndEquipment",
     "shortName": "Property, Plant and Equipment",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R13": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1013 - Disclosure - Goodwill and Other Intangible Assets",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
     "shortName": "Goodwill and Other Intangible Assets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R14": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LeasesOfLesseeDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1014 - Disclosure - Leases",
     "role": "http://lamar.com/role/Leases",
     "shortName": "Leases",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LeasesOfLesseeDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R15": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1015 - Disclosure - Accrued Expenses",
     "role": "http://lamar.com/role/AccruedExpenses",
     "shortName": "Accrued Expenses",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R16": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1016 - Disclosure - Earnings Per Share",
     "role": "http://lamar.com/role/EarningsPerShare",
     "shortName": "Earnings Per Share",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EarningsPerShareTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R17": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1017 - Disclosure - Long-term Debt",
     "role": "http://lamar.com/role/LongTermDebt",
     "shortName": "Long-term Debt",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R18": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1018 - Disclosure - Asset Retirement Obligations",
     "role": "http://lamar.com/role/AssetRetirementObligations",
     "shortName": "Asset Retirement Obligations",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AssetRetirementObligationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R19": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DepreciationAndAmortizationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1019 - Disclosure - Depreciation and Amortization",
     "role": "http://lamar.com/role/DepreciationAndAmortization",
     "shortName": "Depreciation and Amortization",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DepreciationAndAmortizationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1002 - Statement - Condensed Consolidated Balance Sheets",
     "role": "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
     "shortName": "Condensed Consolidated Balance Sheets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R20": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1020 - Disclosure - Income Taxes",
     "role": "http://lamar.com/role/IncomeTaxes",
     "shortName": "Income Taxes",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R21": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1021 - Disclosure - Related Party Transactions",
     "role": "http://lamar.com/role/RelatedPartyTransactions",
     "shortName": "Related Party Transactions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R22": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1022 - Disclosure - Stockholders' Equity",
     "role": "http://lamar.com/role/StockholdersEquity",
     "shortName": "Stockholders' Equity",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R23": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1023 - Disclosure - Stock-Based Compensation",
     "role": "http://lamar.com/role/StockBasedCompensation",
     "shortName": "Stock-Based Compensation",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R24": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1024 - Disclosure - Benefit Plans",
     "role": "http://lamar.com/role/BenefitPlans",
     "shortName": "Benefit Plans",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R25": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1025 - Disclosure - Commitment and Contingencies",
     "role": "http://lamar.com/role/CommitmentAndContingencies",
     "shortName": "Commitment and Contingencies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R26": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DistributionRestrictionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1026 - Disclosure - Distribution Restrictions",
     "role": "http://lamar.com/role/DistributionRestrictions",
     "shortName": "Distribution Restrictions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DistributionRestrictionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R27": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1027 - Disclosure - Fair Value of Financial Instruments",
     "role": "http://lamar.com/role/FairValueOfFinancialInstruments",
     "shortName": "Fair Value of Financial Instruments",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R28": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1028 - Disclosure - Information about Geographic Areas",
     "role": "http://lamar.com/role/InformationAboutGeographicAreas",
     "shortName": "Information about Geographic Areas",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R29": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1029 - Disclosure - New Accounting Pronouncements",
     "role": "http://lamar.com/role/NewAccountingPronouncements",
     "shortName": "New Accounting Pronouncements",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)",
     "role": "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
     "shortName": "Condensed Consolidated Balance Sheets (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R30": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DividendsAndDistributionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1030 - Disclosure - Dividends/Distributions",
     "role": "http://lamar.com/role/DividendsDistributions",
     "shortName": "Dividends/Distributions",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DividendsAndDistributionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R31": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1031 - Disclosure - Quarterly Financial Data (Unaudited)",
     "role": "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
     "shortName": "Quarterly Financial Data (Unaudited)",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:QuarterlyFinancialInformationTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R32": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1032 - Disclosure - Divestiture of Assets",
     "role": "http://lamar.com/role/DivestitureOfAssets",
     "shortName": "Divestiture of Assets",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R33": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1033 - Disclosure - Subsequent Events",
     "role": "http://lamar.com/role/SubsequentEvents",
     "shortName": "Subsequent Events",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SubsequentEventsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R34": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMembersrtConsolidatedEntitiesAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:CondensedFinancialStatementsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1034 - Disclosure - Summarized Financial Information of Subsidiaries",
     "role": "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
     "shortName": "Summarized Financial Information of Subsidiaries",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMembersrtConsolidatedEntitiesAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:CondensedFinancialStatementsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R35": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1035 - Disclosure - Schedule II - Valuation and Qualifying Accounts",
     "role": "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
     "shortName": "Schedule II - Valuation and Qualifying Accounts",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R36": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1036 - Disclosure - Schedule III - Real Estate and Accumulated Depreciation",
     "role": "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
     "shortName": "Schedule III - Real Estate and Accumulated Depreciation",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R37": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:NatureOfBusinessPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1037 - Disclosure - Significant Accounting Policies (Policies)",
     "role": "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
     "shortName": "Significant Accounting Policies (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:NatureOfBusinessPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R38": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:RevenueAndExpenseRecognizedForAdvertisingBarterTransactionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1038 - Disclosure - Significant Accounting Policies (Tables)",
     "role": "http://lamar.com/role/SignificantAccountingPoliciesTables",
     "shortName": "Significant Accounting Policies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:RevenueAndExpenseRecognizedForAdvertisingBarterTransactionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R39": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1039 - Disclosure - Revenues (Tables)",
     "role": "http://lamar.com/role/RevenuesTables",
     "shortName": "Revenues (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisaggregationOfRevenueTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R4": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1004 - Statement - Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited)",
     "role": "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
     "shortName": "Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited)",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:InvestmentIncomeInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R40": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:BusinessCombinationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_TwoThousandTwentyAcquisitionsMemberusgaapBusinessAcquisitionAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1040 - Disclosure - Acquisitions (Tables)",
     "role": "http://lamar.com/role/AcquisitionsTables",
     "shortName": "Acquisitions (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:BusinessCombinationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_TwoThousandTwentyAcquisitionsMemberusgaapBusinessAcquisitionAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R41": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1041 - Disclosure - Property, Plant and Equipment (Tables)",
     "role": "http://lamar.com/role/PropertyPlantAndEquipmentTables",
     "shortName": "Property, Plant and Equipment (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R42": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1042 - Disclosure - Goodwill and Other Intangible Assets (Tables)",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
     "shortName": "Goodwill and Other Intangible Assets (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R43": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1043 - Disclosure - Leases (Tables)",
     "role": "http://lamar.com/role/LeasesTables",
     "shortName": "Leases (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R44": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1044 - Disclosure - Accrued Expenses (Tables)",
     "role": "http://lamar.com/role/AccruedExpensesTables",
     "shortName": "Accrued Expenses (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R45": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1045 - Disclosure - Long-term Debt (Tables)",
     "role": "http://lamar.com/role/LongTermDebtTables",
     "shortName": "Long-term Debt (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R46": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1046 - Disclosure - Asset Retirement Obligations (Tables)",
     "role": "http://lamar.com/role/AssetRetirementObligationsTables",
     "shortName": "Asset Retirement Obligations (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R47": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:DepreciationAndAmortizationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DepreciationAndAmortizationExpensesExcludedFromOperatingExpensesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1047 - Disclosure - Depreciation and Amortization (Tables)",
     "role": "http://lamar.com/role/DepreciationAndAmortizationTables",
     "shortName": "Depreciation and Amortization (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:DepreciationAndAmortizationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:DepreciationAndAmortizationExpensesExcludedFromOperatingExpensesTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R48": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1048 - Disclosure - Income Taxes (Tables)",
     "role": "http://lamar.com/role/IncomeTaxesTables",
     "shortName": "Income Taxes (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R49": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1049 - Disclosure - Stock-Based Compensation (Tables)",
     "role": "http://lamar.com/role/StockBasedCompensationTables",
     "shortName": "Stock-Based Compensation (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "lamr:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R5": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2017",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1005 - Statement - Consolidated Statements of Stockholders' Equity",
     "role": "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
     "shortName": "Consolidated Statements of Stockholders' Equity",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2017_LamarMediaCorporationAndSubsidiariesMembersrtConsolidatedEntitiesAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R50": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1050 - Disclosure - Commitment and Contingencies (Tables)",
     "role": "http://lamar.com/role/CommitmentAndContingenciesTables",
     "shortName": "Commitment and Contingencies (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R51": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1051 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)",
     "role": "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
     "shortName": "Quarterly Financial Data (Unaudited) (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R52": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMembersrtConsolidatedEntitiesAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1052 - Disclosure - Summarized Financial Information of Subsidiaries (Tables)",
     "role": "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables",
     "shortName": "Summarized Financial Information of Subsidiaries (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_LamarMediaCorporationAndSubsidiariesMembersrtConsolidatedEntitiesAxis",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "srt:ScheduleOfCondensedBalanceSheetTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R53": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:NatureOfBusinessPolicyTextBlock",
       "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "lamr:NumberOfAdvertisingDisplays",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Billboard",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1053 - Disclosure - Significant Accounting Policies- Additional Information (Detail)",
     "role": "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
     "shortName": "Significant Accounting Policies- Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:NatureOfBusinessPolicyTextBlock",
       "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "lamr:NumberOfAdvertisingDisplays",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Billboard",
      "xsiNil": "false"
     }
    },
    "R54": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:AdvertisingBarterTransactionNetRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1054 - Disclosure - Significant Accounting Policies- Revenue and Expense Recognized for Advertising Barter Transactions (Detail)",
     "role": "http://lamar.com/role/SignificantAccountingPoliciesRevenueAndExpenseRecognizedForAdvertisingBarterTransactionsDetail",
     "shortName": "Significant Accounting Policies- Revenue and Expense Recognized for Advertising Barter Transactions (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:RevenueFromContractWithCustomerPolicyTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:AdvertisingBarterTransactionNetRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R55": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_AccountingStandardsUpdate201409MemberusgaapAdjustmentsForNewAccountingPronouncementsAxis_AdvertisingMemberusgaapIncomeStatementLocationAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:ContractCostExpensesIncurred",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1055 - Disclosure - Revenues - Additional Information (Details)",
     "role": "http://lamar.com/role/RevenuesAdditionalInformationDetails",
     "shortName": "Revenues - Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:RevenueFromContractWithCustomerTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020_AccountingStandardsUpdate201409MemberusgaapAdjustmentsForNewAccountingPronouncementsAxis_AdvertisingMemberusgaapIncomeStatementLocationAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:ContractCostExpensesIncurred",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R56": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1056 - Disclosure - Revenues - Disaggregation Revenue (Detail)",
     "role": "http://lamar.com/role/RevenuesDisaggregationRevenueDetail",
     "shortName": "Revenues - Disaggregation Revenue (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:DisaggregationOfRevenueTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_BillboardAdvertisingMemberusgaapContractWithCustomerSalesChannelAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R57": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "us-gaap:BusinessCombinationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1057 - Disclosure - Acquisitions - Additional Information (Detail)",
     "role": "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
     "shortName": "Acquisitions - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "us-gaap:BusinessCombinationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R58": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:Goodwill",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1058 - Disclosure - Acquisitions - Summary of Allocation of Purchase Price/Acquisition Costs (Detail)",
     "role": "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
     "shortName": "Acquisitions - Summary of Allocation of Purchase Price/Acquisition Costs (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock",
       "us-gaap:BusinessCombinationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020_TwoThousandTwentyAcquisitionsMemberusgaapBusinessAcquisitionAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R59": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:BusinessAcquisitionProFormaInformationTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2019To12_31_2019_TwoThousandNineteenAcquisitionsMemberusgaapBusinessAcquisitionAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:BusinessAcquisitionsProFormaRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1059 - Disclosure - Acquisitions - Summary of Unaudited Pro Forma Financial Information (Detail)",
     "role": "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail",
     "shortName": "Acquisitions - Summary of Unaudited Pro Forma Financial Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:BusinessAcquisitionProFormaInformationTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2019To12_31_2019_TwoThousandNineteenAcquisitionsMemberusgaapBusinessAcquisitionAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:BusinessAcquisitionsProFormaRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R6": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised",
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised",
      "reportCount": 1,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1006 - Statement - Consolidated Statements of Stockholders' Equity (Parenthetical)",
     "role": "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
     "shortName": "Consolidated Statements of Stockholders' Equity (Parenthetical)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "lang": null,
      "name": "lamr:PreferredStockDividendShares",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD_per_Share",
      "xsiNil": "false"
     }
    },
    "R60": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:NonCashFinancingActivityRelatedToFinancingLeaseLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1060 - Disclosure - Non-cash Financing Activities - Additional Information (Detail)",
     "role": "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
     "shortName": "Non-cash Financing Activities - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:NonCashFinancingActivityRelatedToFinancingLeaseLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R61": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1061 - Disclosure - Property, Plant and Equipment - Summary of Major Categories of Property, Plant and Equipment (Detail)",
     "role": "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail",
     "shortName": "Property, Plant and Equipment - Summary of Major Categories of Property, Plant and Equipment (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:PropertyPlantAndEquipmentTextBlock",
       "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020_LandMemberusgaapPropertyPlantAndEquipmentByTypeAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:PropertyPlantAndEquipmentGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R62": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:FiniteLivedIntangibleAssetsGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1062 - Disclosure - Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail)",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
     "shortName": "Goodwill and Other Intangible Assets - Summary of Intangible Assets (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:FiniteLivedIntangibleAssetsGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R63": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:GoodwillGross",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1063 - Disclosure - Goodwill and Other Intangible Assets - Summary of Changes in Gross Carrying Amount of Goodwill (Detail)",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail",
     "shortName": "Goodwill and Other Intangible Assets - Summary of Changes in Gross Carrying Amount of Goodwill (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfGoodwillTextBlock",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2019To12_31_2019",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:GoodwillAcquiredDuringPeriod",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R64": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AmortizationOfIntangibleAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1064 - Disclosure - Goodwill and Other Intangible Assets - Additional Information (Detail)",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsAdditionalInformationDetail",
     "shortName": "Goodwill and Other Intangible Assets - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AmortizationOfIntangibleAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R65": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1065 - Disclosure - Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail)",
     "role": "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail",
     "shortName": "Goodwill and Other Intangible Assets - Summary of Estimated Amortization Expense (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R66": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:LeasesOfLesseeDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:VariableLeaseCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1066 - Disclosure - Leases - Additional Information (Detail)",
     "role": "http://lamar.com/role/LeasesAdditionalInformationDetail",
     "shortName": "Leases - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:LeasesOfLesseeDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:VariableLeaseCost",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R67": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1067 - Disclosure - Leases - Summary of Maturities of Operating Lease Liabilities (Detail)",
     "role": "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail",
     "shortName": "Leases - Summary of Maturities of Operating Lease Liabilities (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R68": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:EmployeeRelatedLiabilitiesCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1068 - Disclosure - Accrued Expenses - Summary of Accrued Expenses (Detail)",
     "role": "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
     "shortName": "Accrued Expenses - Summary of Accrued Expenses (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:EmployeeRelatedLiabilitiesCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R69": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:EarningsPerShareTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
      "reportCount": 1,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1069 - Disclosure - Earnings Per Share - Additional Information (Detail)",
     "role": "http://lamar.com/role/EarningsPerShareAdditionalInformationDetail",
     "shortName": "Earnings Per Share - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R7": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProfitLoss",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1007 - Statement - Consolidated Statements of Cash Flows",
     "role": "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
     "shortName": "Consolidated Statements of Cash Flows",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ProfitLoss",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R70": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentCarryingAmount",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1070 - Disclosure - Long-term Debt - Long-Term Debt (Detail)",
     "role": "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
     "shortName": "Long-term Debt - Long-Term Debt (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDebtInstrumentsTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "lang": null,
      "name": "lamr:DebtInstrumentCarryingAmountCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R71": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn02_06_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentInterestRateStatedPercentage",
      "reportCount": 1,
      "unitRef": "Unit_pure",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1071 - Disclosure - Long-term Debt - Long-Term Debt (Parenthetical) (Detail)",
     "role": "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
     "shortName": "Long-term Debt - Long-Term Debt (Parenthetical) (Detail)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R72": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020_DebtMemberusgaapFinancialInstrumentAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1072 - Disclosure - Long-term Debt - Summary of Long-Term Debt Contractual Maturities (Detail)",
     "role": "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail",
     "shortName": "Long-term Debt - Summary of Long-Term Debt Contractual Maturities (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "us-gaap:LongTermDebtTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020_DebtMemberusgaapFinancialInstrumentAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R73": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtInstrumentDescription",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1073 - Disclosure - Long-term Debt - Additional Information (Detail)",
     "role": "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
     "shortName": "Long-term Debt - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtInstrumentDescription",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R74": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:AssetRetirementObligationsNoncurrent",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1074 - Disclosure - Asset Retirement Obligations - Information Related to Asset Retirement Obligations (Detail)",
     "role": "http://lamar.com/role/AssetRetirementObligationsInformationRelatedToAssetRetirementObligationsDetail",
     "shortName": "Asset Retirement Obligations - Information Related to Asset Retirement Obligations (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "us-gaap:AssetRetirementObligationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2018",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:AssetRetirementObligationsNoncurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R75": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DepreciationAmortizationAndAccretionNet",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1075 - Disclosure - Depreciation and Amortization - Depreciation and Amortization Expense Excluded from Operating Expenses in its Condensed Consolidated Statements of Income and Comprehensive Income (Detail)",
     "role": "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail",
     "shortName": "Depreciation and Amortization - Depreciation and Amortization Expense Excluded from Operating Expenses in its Condensed Consolidated Statements of Income and Comprehensive Income (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "lamr:DepreciationAndAmortizationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_AdvertisementExpenseMemberusgaapIncomeStatementLocationAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:DepreciationAmortizationAndAccretionNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R76": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1076 - Disclosure - Income Taxes - Income Tax Expense (Benefit) (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail",
     "shortName": "Income Taxes - Income Tax Expense (Benefit) (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:CurrentFederalTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R77": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:IncomeTaxesReceivablePayable",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1077 - Disclosure - Income Taxes - Additional Information (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
     "shortName": "Income Taxes - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:IncomeTaxesReceivablePayable",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R78": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1078 - Disclosure - Income Taxes - U.S. and Foreign Components of Earnings Before Income Taxes (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesUSAndForeignComponentsOfEarningsBeforeIncomeTaxesDetail",
     "shortName": "Income Taxes - U.S. and Foreign Components of Earnings Before Income Taxes (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R79": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1079 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail",
     "shortName": "Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R8": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1008 - Disclosure - Significant Accounting Policies",
     "role": "http://lamar.com/role/SignificantAccountingPolicies",
     "shortName": "Significant Accounting Policies",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:BusinessDescriptionAndAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R80": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationDeductionsDividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1080 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Parenthetical) (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
     "shortName": "Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Parenthetical) (Detail)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:IncomeTaxReconciliationDeductionsDividends",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R81": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1081 - Disclosure - Income Taxes - Components of Deferred Taxes (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail",
     "shortName": "Income Taxes - Components of Deferred Taxes (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R82": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2019",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefits",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1082 - Disclosure - Income Taxes - Reconciliation Unrecognized Tax Benefits (Detail)",
     "role": "http://lamar.com/role/IncomeTaxesReconciliationUnrecognizedTaxBenefitsDetail",
     "shortName": "Income Taxes - Reconciliation Unrecognized Tax Benefits (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "ix:continuation",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R83": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:DueFromEmployees",
       "div",
       "div",
       "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:DueFromEmployees",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1083 - Disclosure - Related Party Transactions - Additional Information (Detail)",
     "role": "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
     "shortName": "Related Party Transactions - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "us-gaap:DueFromEmployees",
       "div",
       "div",
       "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:DueFromEmployees",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R84": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn07_16_1999",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:PreferredStockParOrStatedValuePerShare",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD_per_Share",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1084 - Disclosure - Stockholders' Equity - Additional Information (Detail)",
     "role": "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail",
     "shortName": "Stockholders' Equity - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn07_16_1999",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:PreferredStockParOrStatedValuePerShare",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD_per_Share",
      "xsiNil": "false"
     }
    },
    "R85": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfAccruedLiabilitiesTableTextBlock",
       "us-gaap:AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:ShareBasedCompensationArrangementByShareBasedPaymentAwardAccruedLiabilities",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1085 - Disclosure - Stock-Based Compensation - Additional Information (Detail)",
     "role": "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
     "shortName": "Stock-Based Compensation - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "lang": "en-US",
      "name": "lamr:PeriodOfGradedVestingForOptionValuation",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R86": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "2",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate",
      "reportCount": 1,
      "unitRef": "Unit_pure",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1086 - Disclosure - Stock-Based Compensation - Weighted Average Fair Value of Options Granted (Detail)",
     "role": "http://lamar.com/role/StockBasedCompensationWeightedAverageFairValueOfOptionsGrantedDetail",
     "shortName": "Stock-Based Compensation - Weighted Average Fair Value of Options Granted (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "lamr:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "2",
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_pure",
      "xsiNil": "false"
     }
    },
    "R87": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2019",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
      "reportCount": 1,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1087 - Disclosure - Stock-Based Compensation - Stock Option Transactions Under Various Stock-Based Employee Compensation Plans (Detail)",
     "role": "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail",
     "shortName": "Stock-Based Compensation - Stock Option Transactions Under Various Stock-Based Employee Compensation Plans (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     }
    },
    "R88": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
      "reportCount": 1,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1088 - Disclosure - Stock-Based Compensation - Summary of ESPP Share Activity (Detail)",
     "role": "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail",
     "shortName": "Stock-Based Compensation - Summary of ESPP Share Activity (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock",
       "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021_EmployeeStockPurchasePlanMemberusgaapAwardTypeAxis",
      "decimals": "INF",
      "lang": null,
      "name": "us-gaap:StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_shares",
      "xsiNil": "false"
     }
    },
    "R89": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:LettersOfCreditOutstandingAmount",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1089 - Disclosure - Benefit Plans - Additional Information (Detail)",
     "role": "http://lamar.com/role/BenefitPlansAdditionalInformationDetail",
     "shortName": "Benefit Plans - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": null,
      "lang": "en-US",
      "name": "lamr:EmployeesEligibility",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R9": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1009 - Disclosure - Revenues",
     "role": "http://lamar.com/role/Revenues",
     "shortName": "Revenues",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R90": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
       "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ContractualObligationDueInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1090 - Disclosure - Commitment and Contingencies - Summary of Minimum Payments Related to Agreements (Detail)",
     "role": "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail",
     "shortName": "Commitment and Contingencies - Summary of Minimum Payments Related to Agreements (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
       "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ContractualObligationDueInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R91": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:DistributionRestrictionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:BalanceOfPermittedTransfersToParentCompany",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1091 - Disclosure - Distribution Restrictions - Additional Information (Detail)",
     "role": "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
     "shortName": "Distribution Restrictions - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:DistributionRestrictionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "lamr:BalanceOfPermittedTransfersToParentCompany",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R92": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:FairValueDisclosuresTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1092 - Disclosure - Fair Value of Financial Instruments - Additional Information (Detail)",
     "role": "http://lamar.com/role/FairValueOfFinancialInstrumentsAdditionalInformationDetail",
     "shortName": "Fair Value of Financial Instruments - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "us-gaap:FairValueDisclosuresTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentFairValue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R93": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "us-gaap:SegmentReportingDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021_NonUsMembersrtStatementGeographicalAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NoncurrentAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1093 - Disclosure - Information about Geographic Areas - Additional Information (Detail)",
     "role": "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail",
     "shortName": "Information about Geographic Areas - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "div",
       "div",
       "us-gaap:SegmentReportingDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn03_31_2021_NonUsMembersrtStatementGeographicalAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:NoncurrentAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R94": {
     "firstAnchor": {
      "ancestors": [
       "us-gaap:DividendsCash",
       "div",
       "div",
       "lamr:DividendsAndDistributionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:PaymentsOfDividends",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1094 - Disclosure - Dividends/Distributions - Additional Information (Detail)",
     "role": "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail",
     "shortName": "Dividends/Distributions - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "lamr:DividendsAndDistributionsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:DividendsCash",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R95": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:RevenueFromContractWithCustomerIncludingAssessedTax",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1095 - Disclosure - Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail)",
     "role": "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail",
     "shortName": "Quarterly Financial Data (Unaudited) - Summary of Quarterly Financial Data (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "us-gaap:ScheduleOfQuarterlyFinancialInformationTableTextBlock",
       "us-gaap:QuarterlyFinancialInformationTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P10_01_2020To12_31_2020",
      "decimals": "-3",
      "lang": null,
      "name": "lamr:AdvertisingRevenueNetOfDirectExpenses",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R96": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2021To03_31_2021",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:GainLossOnDispositionOfAssets1",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1096 - Disclosure - Divestiture of Assets - Additional Information (Detail)",
     "role": "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail",
     "shortName": "Divestiture of Assets - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "us-gaap:DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P03_17_2018To04_16_2018_PRsrtStatementGeographicalAxis",
      "decimals": "-3",
      "lang": null,
      "name": "lamr:DivestitureOfBusinessesNonCashConsiderationNotesReceived",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R97": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "ix:continuation",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2020",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:DebtInstrumentFaceAmount",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1097 - Disclosure - Subsequent Events - Additional Information (Detail)",
     "role": "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail",
     "shortName": "Subsequent Events - Additional Information (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "us-gaap:SubsequentEventsTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn01_22_2021_FivePointThreeByFourPercentSeniorNotesMemberusgaapLongtermDebtTypeAxis_SubsequentEventMemberusgaapSubsequentEventTypeAxis",
      "decimals": "-3",
      "lang": null,
      "name": "lamr:DebtInstrumentRedemptionAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R98": {
     "firstAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2019_AllowanceForCreditLossMemberusgaapValuationAllowancesAndReservesTypeAxis",
      "decimals": "-3",
      "first": true,
      "lang": null,
      "name": "us-gaap:ValuationAllowancesAndReservesBalance",
      "reportCount": 1,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1098 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Detail)",
     "role": "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail",
     "shortName": "Schedule II - Valuation and Qualifying Accounts (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "td",
       "tr",
       "table",
       "srt:ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "PAsOn12_31_2017_AllowanceForCreditLossMemberusgaapValuationAllowancesAndReservesTypeAxis",
      "decimals": "-3",
      "lang": null,
      "name": "us-gaap:ValuationAllowancesAndReservesBalance",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_USD",
      "xsiNil": "false"
     }
    },
    "R99": {
     "firstAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "srt:SECScheduleIIIRealEstateNumberOfUnits",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Display",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "1099 - Disclosure - Schedule III - Schedule of Real Estate and Accumulated Depreciation (Detail)",
     "role": "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
     "shortName": "Schedule III - Schedule of Real Estate and Accumulated Depreciation (Detail)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "div",
       "div",
       "td",
       "tr",
       "table",
       "srt:RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
       "div",
       "div",
       "div",
       "body",
       "html"
      ],
      "baseRef": "d191686ds4.htm",
      "contextRef": "P01_01_2020To12_31_2020",
      "decimals": "INF",
      "first": true,
      "lang": null,
      "name": "srt:SECScheduleIIIRealEstateNumberOfUnits",
      "reportCount": 1,
      "unique": true,
      "unitRef": "Unit_Display",
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 111,
   "tag": {
    "country_PR": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "PUERTO RICO",
        "terseLabel": "Puerto Rico [Member]"
       }
      }
     },
     "localname": "PR",
     "nsuri": "http://xbrl.sec.gov/country/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_CoverAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cover page.",
        "label": "Cover [Abstract]"
       }
      }
     },
     "localname": "CoverAbstract",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "dei_DocumentInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Document Information [Line Items]",
        "terseLabel": "Document Information [Line Items]"
       }
      }
     },
     "localname": "DocumentInformationLineItems",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_DocumentInformationTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package.",
        "label": "Document Information [Table]"
       }
      }
     },
     "localname": "DocumentInformationTable",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r736"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.",
        "label": "Entity [Domain]",
        "terseLabel": "Entity"
       }
      }
     },
     "localname": "EntityDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r736"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFilerCategory": {
     "auth_ref": [
      "r736"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Filer Category",
        "terseLabel": "Entity Filer Category"
       }
      }
     },
     "localname": "EntityFilerCategory",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "filerCategoryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r736"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntitySmallBusiness": {
     "auth_ref": [
      "r736"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).",
        "label": "Entity Small Business",
        "terseLabel": "Entity Small Business"
       }
      }
     },
     "localname": "EntitySmallBusiness",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Cover"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_LegalEntityAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The set of legal entities associated with a report.",
        "label": "Legal Entity [Axis]",
        "terseLabel": "Legal Entity"
       }
      }
     },
     "localname": "LegalEntityAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_AccountReceivableMinimumFundingThresholdDescription": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Account Receivable Minimum Funding Threshold Description.",
        "label": "Account Receivable Minimum Funding Threshold Description",
        "verboseLabel": "Minimum Funding Threshold"
       }
      }
     },
     "localname": "AccountReceivableMinimumFundingThresholdDescription",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounts Payable And Accrued Liabilities Current And Noncurrent [Table]",
        "label": "Accounts Payable And Accrued Liabilities Current And Noncurrent [Table]",
        "terseLabel": "Accounts Payable And Accrued Liabilities Current And Noncurrent [Table]"
       }
      }
     },
     "localname": "AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_AccountsPayableAndAccruedLiabilitiesCurrentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounts Payable And Accrued Liabilities Current [Line Items]",
        "label": "Accounts Payable And Accrued Liabilities Current [Line Items]",
        "terseLabel": "Accounts Payable And Accrued Liabilities Current [Line Items]"
       }
      }
     },
     "localname": "AccountsPayableAndAccruedLiabilitiesCurrentLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_AccountsPayableToAssociatedCompanies": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounts Payable To Associated Companies",
        "label": "Accounts Payable To Associated Companies",
        "terseLabel": "Amount payable to parent company"
       }
      }
     },
     "localname": "AccountsPayableToAssociatedCompanies",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AccountsReceivableSecuritizationAvailableBorrowingAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounts receivable securitization available borrowing amount.",
        "label": "Accounts Receivable Securitization Available Borrowing Amount",
        "terseLabel": "Available borrowing on accounts receivable securitization"
       }
      }
     },
     "localname": "AccountsReceivableSecuritizationAvailableBorrowingAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AccountsReceivableSecuritizationProgramMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounts Receivable Securitization Program",
        "label": "Accounts Receivable Securitization Program [Member]",
        "terseLabel": "Accounts Receivable Securitization Program [Member]"
       }
      }
     },
     "localname": "AccountsReceivableSecuritizationProgramMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_AccruedVariableLeaseAndContractExpenseCurrent": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accrued variable lease and contract expense current.",
        "label": "Accrued Variable Lease And Contract Expense Current",
        "terseLabel": "Accrued variable lease and contract expense"
       }
      }
     },
     "localname": "AccruedVariableLeaseAndContractExpenseCurrent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AcquiredAdvertisingDisplaysMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Acquired advertising displays.",
        "label": "Acquired Advertising Displays [Member]",
        "terseLabel": "Acquisition of Advertising Displays [Member]"
       }
      }
     },
     "localname": "AcquiredAdvertisingDisplaysMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_AdjustmentsToAdditionalPaidInCapitalContributionFromParent": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Adjustments to additional paid in capital for contributions from parent",
        "label": "Adjustments To Additional Paid In Capital Contribution From Parent",
        "terseLabel": "Contribution from parent"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalContributionFromParent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AdvertisementExpenseMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Advertisement expense.",
        "label": "Advertisement Expense [Member]",
        "terseLabel": "Direct Advertising Expenses [Member]"
       }
      }
     },
     "localname": "AdvertisementExpenseMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_AdvertisingBarterTransactionDirectAdvertisingExpenses": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount included in direct advertising expenses related to barter transactions for the period.",
        "label": "Advertising Barter Transaction Direct Advertising Expenses",
        "terseLabel": "Direct advertising expenses"
       }
      }
     },
     "localname": "AdvertisingBarterTransactionDirectAdvertisingExpenses",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesRevenueAndExpenseRecognizedForAdvertisingBarterTransactionsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AdvertisingBarterTransactionGeneralAndAdministrativeExpenses": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount included in general and administrative expenses related to barter transactions for the period.",
        "label": "Advertising Barter Transaction General And Administrative Expenses",
        "terseLabel": "General and administrative expenses"
       }
      }
     },
     "localname": "AdvertisingBarterTransactionGeneralAndAdministrativeExpenses",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesRevenueAndExpenseRecognizedForAdvertisingBarterTransactionsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AdvertisingBarterTransactionNetRevenue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount included in advertising revenue related to barter transactions for the period.",
        "label": "Advertising Barter Transaction Net Revenue",
        "terseLabel": "Net revenues"
       }
      }
     },
     "localname": "AdvertisingBarterTransactionNetRevenue",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesRevenueAndExpenseRecognizedForAdvertisingBarterTransactionsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AdvertisingRevenueNetOfDirectExpenses": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Item represents advertising revenues less direct advertising expenses for the period.",
        "label": "Advertising Revenue Net Of Direct Expenses",
        "terseLabel": "Net revenues less direct advertising expenses"
       }
      }
     },
     "localname": "AdvertisingRevenueNetOfDirectExpenses",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AdvertisingStructuresMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Advertising structures.",
        "label": "Advertising Structures [Member]",
        "terseLabel": "Advertising Structures [Member]"
       }
      }
     },
     "localname": "AdvertisingStructuresMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_AggregateOfferingPriceOfCommonStockIssuable": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate offering price of common stock issuable.",
        "label": "Aggregate Offering Price Of Common Stock Issuable",
        "terseLabel": "Aggregate offering price of common stock issuable"
       }
      }
     },
     "localname": "AggregateOfferingPriceOfCommonStockIssuable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AmortizationOfAcquiredIntangibleAsset": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortization of acquired intangible asset.",
        "label": "Amortization Of Acquired Intangible Asset",
        "terseLabel": "Aggregate amortization expense related to acquisition"
       }
      }
     },
     "localname": "AmortizationOfAcquiredIntangibleAsset",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AmountOfNonCashConsiderationForAcquisition": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of non cash consideration for acquisition.",
        "label": "Amount Of Non Cash Consideration For Acquisition",
        "terseLabel": "Purchase price, non cash consideration"
       }
      }
     },
     "localname": "AmountOfNonCashConsiderationForAcquisition",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_AutomotiveAndOtherEquipmentMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Automotive and other equipment.",
        "label": "Automotive And Other Equipment [Member]",
        "terseLabel": "Automotive and Other Equipment [Member]"
       }
      }
     },
     "localname": "AutomotiveAndOtherEquipmentMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_AvailableCumulativeCredit": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of additional cumulative credit available for transfers to parent company under the terms of Lamar Media Corp.'s senior credit facility.",
        "label": "Available Cumulative Credit",
        "verboseLabel": "Available cumulative credit"
       }
      }
     },
     "localname": "AvailableCumulativeCredit",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BalanceOfPermittedTransfersToParentCompany": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Balance of permitted transfers to parent company allowed under the terms of Lamar Media Corp.'s senior subordinated and senior notes.",
        "label": "Balance Of Permitted Transfers To Parent Company",
        "terseLabel": "Balance of permitted transfers to parent company"
       }
      }
     },
     "localname": "BalanceOfPermittedTransfersToParentCompany",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BaseOperatingLeaseCost": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Base operating lease cost.",
        "label": "Base Operating Lease Cost",
        "terseLabel": "Base operating lease, cost"
       }
      }
     },
     "localname": "BaseOperatingLeaseCost",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BillboardAdvertisingMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Billboard advertising.",
        "label": "Billboard Advertising [Member]",
        "terseLabel": "Billboard Advertising [Member]"
       }
      }
     },
     "localname": "BillboardAdvertisingMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_BusinessAcquisitionPurchasePriceAllocationIntangibleAssetsAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business acquisition purchase price allocation intangible assets amount.",
        "label": "Business Acquisition Purchase Price Allocation Intangible Assets Amount",
        "terseLabel": "Portion of acquired assets assigned to intangibles"
       }
      }
     },
     "localname": "BusinessAcquisitionPurchasePriceAllocationIntangibleAssetsAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipmentAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business acquisition purchase price allocation property, plant and equipment amount.",
        "label": "Business Acquisition Purchase Price Allocation Property Plant And Equipment Amount",
        "terseLabel": "Portion of acquired assets assigned to property, plant and equipment"
       }
      }
     },
     "localname": "BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipmentAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessAcquisitionsPurchasePriceAllocationGoodwillAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business acquisitions purchase price allocation goodwill amount.",
        "label": "Business Acquisitions Purchase Price Allocation Goodwill Amount",
        "verboseLabel": "Portion of acquired assets assigned to intangibles"
       }
      }
     },
     "localname": "BusinessAcquisitionsPurchasePriceAllocationGoodwillAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessCombinationPostClosingAdjustmentsToAcquiredWorkingCapitalRelatedToPurchase": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combination post closing adjustments to acquired working capital related to purchase.",
        "label": "Business Combination Post Closing Adjustments To Acquired Working Capital Related To Purchase",
        "terseLabel": "Post-closing adjustments to acquired working capital related to purchase"
       }
      }
     },
     "localname": "BusinessCombinationPostClosingAdjustmentsToAcquiredWorkingCapitalRelatedToPurchase",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetAcquisitionCosts": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed asset acquisition costs.",
        "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Asset Acquisition Costs",
        "terseLabel": "Asset acquisition costs"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetAcquisitionCosts",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsIncludingGoodwillAndAssetAcquisitionCost": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed intangible assets including goodwill and asset acquisition cost.",
        "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Including Goodwill And Asset Acquisition Cost",
        "terseLabel": "Total acquired intangible assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsIncludingGoodwillAndAssetAcquisitionCost",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 8.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed operating lease liabilities.",
        "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Operating Lease Liabilities",
        "negatedLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseLiabilities",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 7.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Business combination recognized identifiable assets acquired and liabilities assumed operating lease right of use assets.",
        "label": "Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Operating Lease Right Of Use Assets",
        "terseLabel": "Operating right of use assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CapitalContributionToAffiliate": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Capital contribution to affiliate.",
        "label": "Capital Contribution To Affiliate",
        "terseLabel": "Amount contributed to affiliate"
       }
      }
     },
     "localname": "CapitalContributionToAffiliate",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CashPortionOfGainsLossesOnExtinguishmentOfDebt": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cash portion of gains losses on extinguishment of debt.",
        "label": "Cash Portion Of Gains Losses On Extinguishment Of Debt",
        "negatedLabel": "Loss on debt extinguishment on cash"
       }
      }
     },
     "localname": "CashPortionOfGainsLossesOnExtinguishmentOfDebt",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CommonStockCapitalSharesAmountReservedForFutureIssuance": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Common stock capital shares amount reserved for future issuance.",
        "label": "Common Stock Capital Shares Amount Reserved For Future Issuance",
        "terseLabel": "Common stock, shares available to be sold"
       }
      }
     },
     "localname": "CommonStockCapitalSharesAmountReservedForFutureIssuance",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CommonStockDividendsPerShareCashPaidDeclaredInPriorPeriod": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Common stock dividends per share cash paid declared in prior period.",
        "label": "Common Stock Dividends Per Share Cash Paid Declared In Prior Period",
        "verboseLabel": "Dividends paid in current year declared in prior period, per share"
       }
      }
     },
     "localname": "CommonStockDividendsPerShareCashPaidDeclaredInPriorPeriod",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "lamr_ContractCostExpensesIncurred": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contract cost, expenses incurred.",
        "label": "Contract Cost Expenses Incurred",
        "terseLabel": "Contract cost expense net"
       }
      }
     },
     "localname": "ContractCostExpensesIncurred",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_ContractWithCustomerLiabilityPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Contract With Customer Liability Policy [Text Block]",
        "terseLabel": "Deferred Income"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityPolicyTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_CorporateExpensesExcludingDepreciationAndAmortization": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 8.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Corporate expenses excluding depreciation and amortization.",
        "label": "Corporate Expenses Excluding Depreciation And Amortization",
        "terseLabel": "Corporate expenses (exclusive of depreciation and amortization)",
        "verboseLabel": "Corporate expenses"
       }
      }
     },
     "localname": "CorporateExpensesExcludingDepreciationAndAmortization",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CorporateExpensesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Corporate expenses.",
        "label": "Corporate Expenses [Member]",
        "terseLabel": "Corporate Expenses [Member]"
       }
      }
     },
     "localname": "CorporateExpensesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_CurrentForeignTaxExpenseBenefitRelatedToCurrentPeriodEarnings": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Current foreign tax expense benefit related to current period earnings.",
        "label": "Current Foreign Tax Expense Benefit Related To Current Period Earnings",
        "terseLabel": "Current income tax expense (benefit) related to current period earnings"
       }
      }
     },
     "localname": "CurrentForeignTaxExpenseBenefitRelatedToCurrentPeriodEarnings",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_CustomerListsAndContractsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Customer lists and contracts.",
        "label": "Customer Lists And Contracts [Member]",
        "terseLabel": "Customer Lists and Contracts [Member]"
       }
      }
     },
     "localname": "CustomerListsAndContractsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DaysSalesOutstandingDueToThirdAmendmentToFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Days Sales Outstanding Due To Third Amendment To Financing Agreement.",
        "label": "Days Sales Outstanding Due To Third Amendment To Financing Agreement",
        "verboseLabel": "Number of days sales outstanding"
       }
      }
     },
     "localname": "DaysSalesOutstandingDueToThirdAmendmentToFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_DebtInstrumentCarryingAmountCurrent": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument Carrying Amount Current",
        "label": "Debt Instrument Carrying Amount Current",
        "negatedLabel": "Debt, Less current maturities"
       }
      }
     },
     "localname": "DebtInstrumentCarryingAmountCurrent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DebtInstrumentCarryingAmountNonCurrent": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument Carrying Amount Non Current",
        "label": "Debt Instrument Carrying Amount Non Current",
        "terseLabel": "Debt, excluding current maturities"
       }
      }
     },
     "localname": "DebtInstrumentCarryingAmountNonCurrent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DebtInstrumentPrincipalAmountRedemptionMaximumPercentage": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument Principal Amount Redemption Maximum Percentage.",
        "label": "Debt Instrument Principal Amount Redemption Maximum Percentage",
        "verboseLabel": "Redemption percentage of aggregate principal amount of senior notes"
       }
      }
     },
     "localname": "DebtInstrumentPrincipalAmountRedemptionMaximumPercentage",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DebtInstrumentPurchasePriceAfterChangeOfControlPercentage": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage premium which may be required for repayment if the Company undergoes a change in control.",
        "label": "Debt Instrument Purchase Price After Change Of Control Percentage",
        "terseLabel": "Redemption price percentage of the principal amount to be purchased"
       }
      }
     },
     "localname": "DebtInstrumentPurchasePriceAfterChangeOfControlPercentage",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DebtInstrumentRedemptionAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt instrument redemption amount.",
        "label": "Debt Instrument Redemption Amount",
        "terseLabel": "Debt instrument redemption amount"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DebtInstrumentRedemptionDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt instrument redemption date.",
        "label": "Debt Instrument Redemption Date",
        "terseLabel": "Debt instrument redemption date"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionDate",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "dateItemType"
    },
    "lamr_DebtInstrumentRedemptionPercentageOfOutstandingPostRedemption": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument Redemption Percentage Of Outstanding Post Redemption.",
        "label": "Debt Instrument Redemption Percentage Of Outstanding Post Redemption",
        "verboseLabel": "Redemption percentage of issued notes which remain outstanding"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPercentageOfOutstandingPostRedemption",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DebtInstrumentRedemptionPeriod": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument, Redemption, Period",
        "label": "Debt Instrument Redemption Period",
        "terseLabel": "Redemption period"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriod",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_DebtInstrumentRedemptionPricePrincipalAmountRedeemed": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument, Redemption Price, Principal Amount Redeemed",
        "label": "Debt Instrument Redemption Price Principal Amount Redeemed",
        "terseLabel": "Debt Instrument, Redemption Price, Principal Amount Redeemed"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPricePrincipalAmountRedeemed",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DebtInstrumentRepurchaseProgramMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Instrument Repurchase Program",
        "label": "Debt Instrument Repurchase Program [Member]",
        "verboseLabel": "Debt Instrument Repurchase Program [Member]"
       }
      }
     },
     "localname": "DebtInstrumentRepurchaseProgramMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DebtNetOfDeferredFinancingCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt net of deferred financing costs.",
        "label": "Debt Net Of Deferred Financing Costs [Member]",
        "terseLabel": "Debt Net of Deferred Financing Costs [Member]"
       }
      }
     },
     "localname": "DebtNetOfDeferredFinancingCostsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DebtRatioLessThanThreePointTwoFiveMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt ratio less than three point two five.",
        "label": "Debt Ratio Less Than Three Point Two Five [Member]",
        "terseLabel": "Debt Ratio Less Than Three Point Two Five [Member]"
       }
      }
     },
     "localname": "DebtRatioLessThanThreePointTwoFiveMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DebtRepurchaseProgramAuthorizedAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt Repurchase Program Authorized Amount.",
        "label": "Debt Repurchase Program Authorized Amount",
        "verboseLabel": "Debt repurchase program, authorized amount"
       }
      }
     },
     "localname": "DebtRepurchaseProgramAuthorizedAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DeferredCompensationArrangementWithIndividualEmployeesContributionMaximum": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred compensation arrangement with individual employees contribution maximum.",
        "label": "Deferred Compensation Arrangement With Individual Employees Contribution Maximum",
        "terseLabel": "Deferred compensation arrangement with individual employees contribution maximum"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualEmployeesContributionMaximum",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DeferredCompensationArrangementWithIndividualEmployeesContributionMinimum": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred compensation arrangement with individual employees contribution minimum.",
        "label": "Deferred Compensation Arrangement With Individual Employees Contribution Minimum",
        "terseLabel": "Deferred compensation arrangement with individual employees contribution minimum"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualEmployeesContributionMinimum",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DeferredCompensationPlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred compensation plan.",
        "label": "Deferred Compensation Plan [Member]",
        "terseLabel": "Deferred Compensation Plan [Member]"
       }
      }
     },
     "localname": "DeferredCompensationPlanMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DeferredFinancingCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred financing costs.",
        "label": "Deferred Financing Costs [Member]",
        "terseLabel": "Deferred Financing Costs [Member]"
       }
      }
     },
     "localname": "DeferredFinancingCostsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_DeferredTaxAssetsCurrentTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from currently nondeductible expenses in accrued liabilities, which can only be deducted for tax purposes when such items are actually incurred, and which can only be realized if sufficient tax-basis income is generated in future periods to enable the deduction to be taken.",
        "label": "Deferred Tax Assets Current Tax Deferred Expense Reserves And Accruals Accrued Liabilities",
        "terseLabel": "Accrued liabilities not deducted for tax purposes"
       }
      }
     },
     "localname": "DeferredTaxAssetsCurrentTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DelinquencyRatioDueToFourthAmendmentToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Delinquency Ratio Due To Fourth Amendment To Receivables Financing Agreement",
        "label": "Delinquency Ratio Due To Fourth Amendment To Receivables Financing Agreement",
        "terseLabel": "Delinquency Ratio Due To Fourth Amendment To Receivables Financing Agreement"
       }
      }
     },
     "localname": "DelinquencyRatioDueToFourthAmendmentToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DelinquencyRatioDueToThirdAmendmentToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Delinquency Ratio Due To Third Amendment To Receivables Financing Agreement.",
        "label": "Delinquency Ratio Due To Third Amendment To Receivables Financing Agreement",
        "verboseLabel": "Delinquency ratio"
       }
      }
     },
     "localname": "DelinquencyRatioDueToThirdAmendmentToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DepreciationAndAmortizationDisclosureTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Depreciation and amortization disclosure.",
        "label": "Depreciation And Amortization Disclosure [Text Block]",
        "terseLabel": "Depreciation and Amortization"
       }
      }
     },
     "localname": "DepreciationAndAmortizationDisclosureTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortization"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_DepreciationAndAmortizationExpensesExcludedFromOperatingExpensesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Depreciation and amortization expenses excluded from operating expenses.",
        "label": "Depreciation And Amortization Expenses Excluded From Operating Expenses Table [Text Block]",
        "terseLabel": "Depreciation and Amortization Expense Excluded from Operating Expenses in its Condensed Consolidated Statements of Income and Comprehensive Income"
       }
      }
     },
     "localname": "DepreciationAndAmortizationExpensesExcludedFromOperatingExpensesTableTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_DescriptionOfProvisionsOnSeniorCreditFacilityTransfersToParentCompanySubjectToAdditionalRestrictions": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of Provisions On senior credit facility transfers to Parent Company subject to additional restrictions.",
        "label": "Description Of Provisions On Senior Credit Facility Transfers To Parent Company Subject To Additional Restrictions",
        "terseLabel": "Description of provisions on senior credit facility transfers to Lamar Advertising not subject to additional restrictions"
       }
      }
     },
     "localname": "DescriptionOfProvisionsOnSeniorCreditFacilityTransfersToParentCompanySubjectToAdditionalRestrictions",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_DilutionRatioDueToFourthAmendmenToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dilution ratio due to fourth amendment to receivables financing agreement.",
        "label": "Dilution Ratio Due To Fourth Amendmen To Receivables Financing Agreement"
       }
      }
     },
     "localname": "DilutionRatioDueToFourthAmendmenToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DilutionRatioDueToThirdAmendmentToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dilution Ratio Due To Third Amendment To Receivables Financing Agreement",
        "label": "Dilution Ratio Due To Third Amendment To Receivables Financing Agreement",
        "verboseLabel": "Dilution ratio"
       }
      }
     },
     "localname": "DilutionRatioDueToThirdAmendmentToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_DistributionRestrictionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Distribution restrictions.",
        "label": "Distribution Restrictions [Abstract]"
       }
      }
     },
     "localname": "DistributionRestrictionsAbstract",
     "nsuri": "http://lamar.com/20210331",
     "xbrltype": "stringItemType"
    },
    "lamr_DistributionRestrictionsDisclosureTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Distribution restrictions under terms of the indentures relating to outstanding notes and terms of the senior credit facility.",
        "label": "Distribution Restrictions Disclosure [Text Block]",
        "terseLabel": "Distribution Restrictions"
       }
      }
     },
     "localname": "DistributionRestrictionsDisclosureTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_DivestitureOfAssetsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Divestiture of assets.",
        "label": "Divestiture Of Assets [Line Items]",
        "terseLabel": "Divestiture Of Assets [Line Items]"
       }
      }
     },
     "localname": "DivestitureOfAssetsLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_DivestitureOfAssetsTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Divestiture of assets.",
        "label": "Divestiture Of Assets [Table]",
        "terseLabel": "Divestiture Of Assets [Table]"
       }
      }
     },
     "localname": "DivestitureOfAssetsTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_DivestitureOfBusinessesNonCashConsiderationNotesReceived": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Divestiture of businesses non cash consideration notes received.",
        "label": "Divestiture Of Businesses Non Cash Consideration Notes Received",
        "terseLabel": "Non-cash consideration consisting of note receivable"
       }
      }
     },
     "localname": "DivestitureOfBusinessesNonCashConsiderationNotesReceived",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DividendToParent": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This element represents the total aggregate cash dividends to parent by the entity.",
        "label": "Dividend To Parent",
        "negatedLabel": "Dividend to parent"
       }
      }
     },
     "localname": "DividendToParent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DividendsAndDistributionsDisclosureTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends and distributions disclosure.",
        "label": "Dividends And Distributions Disclosure Text Block",
        "terseLabel": "Dividends/Distributions"
       }
      }
     },
     "localname": "DividendsAndDistributionsDisclosureTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DividendsDistributions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_DividendsAndDistributionsPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends and distributions policy.",
        "label": "Dividends And Distributions Policy [Text Block]",
        "terseLabel": "Dividends/Distributions"
       }
      }
     },
     "localname": "DividendsAndDistributionsPolicyTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_DividendsPreferredStockDeclared": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 17.0,
       "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends preferred stock declared.",
        "label": "Dividends Preferred Stock Declared",
        "terseLabel": "Cash dividends declared and paid on preferred stock"
       }
      }
     },
     "localname": "DividendsPreferredStockDeclared",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_DividendsToFromParent": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 38.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Dividends (to) from parent.",
        "label": "Dividends To From Parent",
        "negatedLabel": "Dividends to parent",
        "negatedTerseLabel": "Dividends (to) from parent"
       }
      }
     },
     "localname": "DividendsToFromParent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_EATELCorpLimitedLiabilityCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "EATEL Corp limited liability company.",
        "label": "E A T E L Corp Limited Liability Company [Member]",
        "terseLabel": "EATEL CORP, LLC [Member]"
       }
      }
     },
     "localname": "EATELCorpLimitedLiabilityCompanyMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_EmployeeStockOptionsAndEmployeeStockPurchasePlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employee stock options and employee stock purchase plan.",
        "label": "Employee Stock Options And Employee Stock Purchase Plan [Member]",
        "terseLabel": "Stock Options and Employee Stock Purchase Plan [Member]"
       }
      }
     },
     "localname": "EmployeeStockOptionsAndEmployeeStockPurchasePlanMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_EmployeeStockPurchasePlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employee stock purchase plan.",
        "label": "Employee Stock Purchase Plan [Member]",
        "terseLabel": "Employee Stock Purchase Plan [Member]"
       }
      }
     },
     "localname": "EmployeeStockPurchasePlanMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_EmployeesEligibility": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employees eligibility.",
        "label": "Employees Eligibility",
        "terseLabel": "Employees eligibility"
       }
      }
     },
     "localname": "EmployeesEligibility",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_EmployersContributionAndCompensation": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employers contribution and compensation.",
        "label": "Employers Contribution And Compensation",
        "terseLabel": "Employers contribution and compensation"
       }
      }
     },
     "localname": "EmployersContributionAndCompensation",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_EmployersContributionAsPercentageOfEmployeesCompensation": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employers contribution as percentage of employees compensation.",
        "label": "Employers Contribution As Percentage Of Employees Compensation",
        "terseLabel": "Employers contribution as percentage of employees compensation"
       }
      }
     },
     "localname": "EmployersContributionAsPercentageOfEmployeesCompensation",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_EmployersContributionAsPercentageOfEmployeesContribution": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employers contribution as percentage of employees contribution.",
        "label": "Employers Contribution As Percentage Of Employees Contribution",
        "terseLabel": "Employers contribution as percentage of employees contribution"
       }
      }
     },
     "localname": "EmployersContributionAsPercentageOfEmployeesContribution",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_EquityDistributionAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity distribution agreement.",
        "label": "Equity Distribution Agreement [Member]",
        "terseLabel": "Equity Distribution Agreement [Member]"
       }
      }
     },
     "localname": "EquityDistributionAgreementMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_EquityInEarningsLossOfSubsidiaries": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity in earnings loss of subsidiaries.",
        "label": "Equity In Earnings Loss Of Subsidiaries",
        "negatedLabel": "Equity in (earnings) loss of subsidiaries"
       }
      }
     },
     "localname": "EquityInEarningsLossOfSubsidiaries",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_ExternalCustomersMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "External Customers [Member]",
        "label": "External Customers [Member]",
        "terseLabel": "External Customers [Member]"
       }
      }
     },
     "localname": "ExternalCustomersMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FairwayOutdoorAdvertisingMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fairway Outdoor Advertising.",
        "label": "Fairway Outdoor Advertising [Member]",
        "terseLabel": "Fairway Outdoor Advertising [Member]"
       }
      }
     },
     "localname": "FairwayOutdoorAdvertisingMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FifteenJulyTwoThousandNineteenAcquisitionsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fifteen July two thousand nineteen acquisitions.",
        "label": "Fifteen July Two Thousand Nineteen Acquisitions [Member]",
        "terseLabel": "July 15, 2019 Acquisitions [Member]"
       }
      }
     },
     "localname": "FifteenJulyTwoThousandNineteenAcquisitionsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FivePercentSeniorSubordinateNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Five percent senior Subordinate Notes.",
        "label": "Five Percent Senior Subordinate Notes [Member]",
        "terseLabel": "5% Senior Subordinated Notes [Member]"
       }
      }
     },
     "localname": "FivePercentSeniorSubordinateNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FivePointThreeByEightPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Five point three by eight percent Senior Notes.",
        "label": "Five Point Three By Eight Percent Senior Notes [Member]",
        "terseLabel": "5 3/8% Senior Notes [Member]"
       }
      }
     },
     "localname": "FivePointThreeByEightPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FivePointThreeByFourPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Five point three by four percent Senior Notes.",
        "label": "Five Point Three By Four Percent Senior Notes [Member]",
        "terseLabel": "5 3/4% Senior Notes [Member]"
       }
      }
     },
     "localname": "FivePointThreeByFourPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_ForUpToTwoAdditionalPeriodsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For Up To Two Additional Periods [member]",
        "label": "For Up To Two Additional Periods [Member]",
        "terseLabel": "For Up To Two Additional Periods [Member]"
       }
      }
     },
     "localname": "ForUpToTwoAdditionalPeriodsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FourPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Four Percent Senior Notes [Member]",
        "terseLabel": "4% Senior Notes [Member]"
       }
      }
     },
     "localname": "FourPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FourPointSevenByEightPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Four Point Seven By Eight Percent Senior Notes [Member]",
        "terseLabel": "4 7/8% Senior Notes [Member]"
       }
      }
     },
     "localname": "FourPointSevenByEightPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_FourPointSevenByEightPercentageSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Four point seven by eight percentage senior notes.",
        "label": "Four Point Seven By Eight Percentage Senior Notes [Member]",
        "terseLabel": "4 7/8% Senior Notes"
       }
      }
     },
     "localname": "FourPointSevenByEightPercentageSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_GoodwillAccumulatedAmortization": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The accumulated amount of amortization of goodwill as of the balance sheet date.",
        "label": "Goodwill Accumulated Amortization",
        "terseLabel": "Goodwill accumulated amortization"
       }
      }
     },
     "localname": "GoodwillAccumulatedAmortization",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncomeTaxLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income Tax.",
        "label": "Income Tax [Line Items]",
        "terseLabel": "Income Tax [Line Items]"
       }
      }
     },
     "localname": "IncomeTaxLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_IncomeTaxRateReconciliationUndistributedEarningsOfForeignSubsidiaries": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax rate reconciliation, undistributed earnings of foreign subsidiaries.",
        "label": "Income Tax Rate Reconciliation Undistributed Earnings Of Foreign Subsidiaries",
        "terseLabel": "Undistributed earnings of foreign subsidiaries",
        "verboseLabel": "Recognized a deferred tax charge for future foreign withholding taxes related to undistributed earnings"
       }
      }
     },
     "localname": "IncomeTaxRateReconciliationUndistributedEarningsOfForeignSubsidiaries",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncomeTaxReconciliationDeferredTaxAdjustmentDueToREITConversion": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income tax reconciliation deferred tax adjustment due to REIT conversion.",
        "label": "Income Tax Reconciliation Deferred Tax Adjustment Due To R E I T Conversion",
        "terseLabel": "Deferred tax adjustment due to REIT conversion"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDeferredTaxAdjustmentDueToREITConversion",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncomeTaxTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income Tax.",
        "label": "Income Tax [Table]",
        "terseLabel": "Income Tax [Table]"
       }
      }
     },
     "localname": "IncomeTaxTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_IncomeTaxesReceivablePayable": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income Taxes Receivable Payable",
        "label": "Income Taxes Receivable Payable",
        "terseLabel": "Income taxes payable"
       }
      }
     },
     "localname": "IncomeTaxesReceivablePayable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncreaseDecreaseInIntercompanyNotesReceivables": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase decrease in intercompany notes receivables.",
        "label": "Increase Decrease In Intercompany Notes Receivables",
        "negatedTerseLabel": "Decrease in intercompany notes receivable"
       }
      }
     },
     "localname": "IncreaseDecreaseInIntercompanyNotesReceivables",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncreaseDecreaseInOperatingLeaseLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase decrease in operating lease liabilities.",
        "label": "Increase Decrease In Operating Lease Liabilities",
        "terseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingLeaseLiabilities",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_IncreaseInDaysSalesOutstandingDueToThirdAmendmentToFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase In Days Sales Outstanding Due To Third Amendment To Financing Agreement.",
        "label": "Increase In Days Sales Outstanding Due To Third Amendment To Financing Agreement",
        "verboseLabel": "Increase in days sales outstanding"
       }
      }
     },
     "localname": "IncreaseInDaysSalesOutstandingDueToThirdAmendmentToFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_IncreaseInDelinquencyRatioDueToThirdAmendmentToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase In Delinquency Ratio Due To Third Amendment To Receivables Financing Agreement",
        "label": "Increase In Delinquency Ratio Due To Third Amendment To Receivables Financing Agreement",
        "terseLabel": "Increase in delinquency ratio"
       }
      }
     },
     "localname": "IncreaseInDelinquencyRatioDueToThirdAmendmentToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_IncreaseInDilutionRatioDueToThirdAmendmentToReceivablesFinancingAgreement": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase In Dilution Ratio Due To Third Amendment To Receivables Financing Agreement.",
        "label": "Increase In Dilution Ratio Due To Third Amendment To Receivables Financing Agreement",
        "verboseLabel": "Increase in dilution ratio"
       }
      }
     },
     "localname": "IncreaseInDilutionRatioDueToThirdAmendmentToReceivablesFinancingAgreement",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_InterimReportingLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interim reporting.",
        "label": "Interim Reporting [Line Items]",
        "terseLabel": "Interim Reporting [Line Items]"
       }
      }
     },
     "localname": "InterimReportingLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_InterimReportingTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interim reporting.",
        "label": "Interim Reporting [Table]",
        "terseLabel": "Interim Reporting [Table]"
       }
      }
     },
     "localname": "InterimReportingTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_InvestmentInSubsidiaries": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment in subsidiaries.",
        "label": "Investment In Subsidiaries",
        "negatedLabel": "Investment in subsidiaries"
       }
      }
     },
     "localname": "InvestmentInSubsidiaries",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_InvestmentMaturityPeriod": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment maturity period.",
        "label": "Investment Maturity Period",
        "terseLabel": "Investment maturity period"
       }
      }
     },
     "localname": "InvestmentMaturityPeriod",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_LamarMediaCorporationAndSubsidiariesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Lamar Media Corporation and Subsidiaries.",
        "label": "Lamar Media Corporation And Subsidiaries [Member]",
        "terseLabel": "LAMAR MEDIA CORP. AND SUBSIDIARIES [Member]"
       }
      }
     },
     "localname": "LamarMediaCorporationAndSubsidiariesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses",
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
      "http://lamar.com/role/AccruedExpensesTables",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
      "http://lamar.com/role/LongTermDebt",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail",
      "http://lamar.com/role/LongTermDebtTables",
      "http://lamar.com/role/NonCashFinancingActivities",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
      "http://lamar.com/role/RelatedPartyTransactions",
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail",
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail",
      "http://lamar.com/role/SignificantAccountingPolicies",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 8.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee Operating Lease Liability Payments Due After Year Four",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_LogoAdvertisingMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Logo advertising.",
        "label": "Logo Advertising [Member]",
        "terseLabel": "Logo Advertising [Member]"
       }
      }
     },
     "localname": "LogoAdvertisingMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive1": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long Term Debt Maturities Repayments Of Principal In Year Five1",
        "verboseLabel": "2025"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive1",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_MaximumActualHoldingsDebtRatio": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum actual holdings debt ratio.",
        "label": "Maximum Actual Holdings Debt Ratio",
        "terseLabel": "Debt ratio related to actual position on senior credit facility"
       }
      }
     },
     "localname": "MaximumActualHoldingsDebtRatio",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "pureItemType"
    },
    "lamr_MaximumHoldingDebtRatioForApplicabilityOfRestrictionOnTransfer": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum holding debt ratio for applicability of restriction on transfer.",
        "label": "Maximum Holding Debt Ratio For Applicability Of Restriction On Transfer",
        "terseLabel": "Debt ratio"
       }
      }
     },
     "localname": "MaximumHoldingDebtRatioForApplicabilityOfRestrictionOnTransfer",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "pureItemType"
    },
    "lamr_MinimumAgeForEntitlementToBenefitOfDeferredCompensationPlan": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum age for entitlement to benefit of deferred compensation plan.",
        "label": "Minimum Age For Entitlement To Benefit Of Deferred Compensation Plan",
        "terseLabel": "Minimum age for entitlement to benefit of deferred compensation plan"
       }
      }
     },
     "localname": "MinimumAgeForEntitlementToBenefitOfDeferredCompensationPlan",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_MinimumAgeRequiredToParticipateInCompanySponsoredSavingsAndProfitSharingPlan": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum years of age required.",
        "label": "Minimum Age Required To Participate In Company Sponsored Savings And Profit Sharing Plan",
        "terseLabel": "Minimum age required to participate in Company sponsored saving and profit sharing plan"
       }
      }
     },
     "localname": "MinimumAgeRequiredToParticipateInCompanySponsoredSavingsAndProfitSharingPlan",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_MinimumTermOfServiceRequiredToParticipateInCompanySponsoredSavingAndProfitSharingPlan": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum years of service required.",
        "label": "Minimum Term Of Service Required To Participate In Company Sponsored Saving And Profit Sharing Plan",
        "terseLabel": "Minimum years of service required to participate in Company sponsored saving and profit sharing plan"
       }
      }
     },
     "localname": "MinimumTermOfServiceRequiredToParticipateInCompanySponsoredSavingAndProfitSharingPlan",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_NatureOfBusinessPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nature of business.",
        "label": "Nature Of Business Policy [Text Block]",
        "terseLabel": "Nature of Business"
       }
      }
     },
     "localname": "NatureOfBusinessPolicyTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_NewAdvertisingDisplaysMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "New advertising displays.",
        "label": "New Advertising Displays [Member]",
        "terseLabel": "New Advertising Displays [Member]"
       }
      }
     },
     "localname": "NewAdvertisingDisplaysMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_NonCashFinancingActivityRelatedToFinancingLeaseLiabilities": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non-cash financing activity related to financing lease liabilities.",
        "label": "Non Cash Financing Activity Related To Financing Lease Liabilities",
        "verboseLabel": "Non cash financing activities related to financing lease liabilities"
       }
      }
     },
     "localname": "NonCashFinancingActivityRelatedToFinancingLeaseLiabilities",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_NonCashFinancingTransaction": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Transaction affecting assets or liabilities which did not result in cash receipts or payments during the period.",
        "label": "Non Cash Financing Transaction",
        "terseLabel": "Non-cash financing activity"
       }
      }
     },
     "localname": "NonCashFinancingTransaction",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_NonCashInvestingTransaction": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non-cash investing transaction.",
        "label": "Non Cash Investing Transaction",
        "terseLabel": "Non-cash investing activities"
       }
      }
     },
     "localname": "NonCashInvestingTransaction",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_NonPerformanceRestrictedStockAwardsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Non Performance Restricted Stock Awards.",
        "label": "Non Performance Restricted Stock Awards [Member]",
        "verboseLabel": "Non-Performance Restricted Stock Awards [Member]"
       }
      }
     },
     "localname": "NonPerformanceRestrictedStockAwardsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_NonemployeeDirectorMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nonemployee Director [Member]",
        "terseLabel": "Non-employee Director [Member]"
       }
      }
     },
     "localname": "NonemployeeDirectorMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_NumberOfAdvertisingDisplays": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of Advertising displays as of the balance sheet date.",
        "label": "Number Of Advertising Displays",
        "terseLabel": "Number of advertising displays"
       }
      }
     },
     "localname": "NumberOfAdvertisingDisplays",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "lamr_NumberOfSingleAssetContributionOnGrossCarryingAmount": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of single asset contribution on gross carrying amount.",
        "label": "Number Of Single Asset Contribution On Gross Carrying Amount",
        "terseLabel": "Number of single asset exceeded 5% of the total gross carrying amount"
       }
      }
     },
     "localname": "NumberOfSingleAssetContributionOnGrossCarryingAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "lamr_NumberOfStatesInWhichEntityOperatesWithLogoSignBusiness": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of states in which the entity operates with logo sign business as of the balance sheet date.",
        "label": "Number Of States In Which Entity Operates With Logo Sign Business",
        "terseLabel": "Number of states in which the company operates logo sign business"
       }
      }
     },
     "localname": "NumberOfStatesInWhichEntityOperatesWithLogoSignBusiness",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "lamr_NumberOfStatesInWhichEntityOperatesWithTransitAdvertisingBusiness": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of states in which entity operates with transit advertising business.",
        "label": "Number Of States In Which Entity Operates With Transit Advertising Business",
        "terseLabel": "Number of states in which the company operates transit advertising displays"
       }
      }
     },
     "localname": "NumberOfStatesInWhichEntityOperatesWithTransitAdvertisingBusiness",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "lamr_NumberOfTransitAdvertisingDisplays": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of transit advertising displays.",
        "label": "Number Of Transit Advertising Displays",
        "terseLabel": "Number of transit advertising displays"
       }
      }
     },
     "localname": "NumberOfTransitAdvertisingDisplays",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "lamr_OneThousandNineHundredNinetySixEquityIncentivePlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "One thousand nine hundred ninety six Equity incentive plan.",
        "label": "One Thousand Nine Hundred Ninety Six Equity Incentive Plan [Member]",
        "terseLabel": "1996 Equity Incentive Plan [Member]"
       }
      }
     },
     "localname": "OneThousandNineHundredNinetySixEquityIncentivePlanMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_OperatingLossCarryforwardExpirationYear": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operating loss carryforward expiration year.",
        "label": "Operating Loss Carryforward Expiration Year",
        "terseLabel": "Operating loss carryforwards expiration start year"
       }
      }
     },
     "localname": "OperatingLossCarryforwardExpirationYear",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "gYearItemType"
    },
    "lamr_OtherNotesWithVariousRatesAndTermsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other notes with various rates and terms.",
        "label": "Other Notes With Various Rates And Terms [Member]"
       }
      }
     },
     "localname": "OtherNotesWithVariousRatesAndTermsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_PaymentOfDividendsDeclaredInPriorPeriod": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Payment of dividends declared in prior period.",
        "label": "Payment Of Dividends Declared In Prior Period",
        "terseLabel": "Dividends paid in current year declared in prior period"
       }
      }
     },
     "localname": "PaymentOfDividendsDeclaredInPriorPeriod",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_PercentageNetIncomeAvailableForDividendDistribution": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage net income available for dividend distribution.",
        "label": "Percentage Net Income Available For Dividend Distribution",
        "terseLabel": "REIT threshold percentage of taxable income to be distributed to stockholders"
       }
      }
     },
     "localname": "PercentageNetIncomeAvailableForDividendDistribution",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_PercentageOfAssetContributionOnGrossCarryingAmount": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of asset contribution on gross carrying amount.",
        "label": "Percentage Of Asset Contribution On Gross Carrying Amount",
        "terseLabel": "Percentage of asset contribution to total gross carrying amount"
       }
      }
     },
     "localname": "PercentageOfAssetContributionOnGrossCarryingAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_PercentageOfAwardsVestingOnGrantDateMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of awards vesting on grant date [Member]"
       }
      }
     },
     "localname": "PercentageOfAwardsVestingOnGrantDateMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_PercentageOfAwardsVestingOnLastDayOfEachDirectorsTermMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Percentage of Awards Vesting On Last Day of Each Directors Term [Member]"
       }
      }
     },
     "localname": "PercentageOfAwardsVestingOnLastDayOfEachDirectorsTermMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_PercentageOfCommitmentToMaintainMinimumBorrowings": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage Of Commitment To Maintain Minimum Borrowings",
        "label": "Percentage Of Commitment To Maintain Minimum Borrowings",
        "verboseLabel": "Percentage of commitment to maintain minimum borrowings"
       }
      }
     },
     "localname": "PercentageOfCommitmentToMaintainMinimumBorrowings",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_PercentageOfEmployeesContributionLimit": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employees contribution limit.",
        "label": "Percentage Of Employees Contribution Limit",
        "terseLabel": "Employees contribution limit"
       }
      }
     },
     "localname": "PercentageOfEmployeesContributionLimit",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_PerformanceBasedCompensationMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Performance Based Compensation.",
        "label": "Performance Based Compensation [Member]",
        "terseLabel": "Performance Based Compensation [Member]"
       }
      }
     },
     "localname": "PerformanceBasedCompensationMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_PerformanceBasedStockIncentiveProgramMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Performance based stock incentive program.",
        "label": "Performance Based Stock Incentive Program [Member]",
        "terseLabel": "Performance-Based Stock Incentive Program [Member]"
       }
      }
     },
     "localname": "PerformanceBasedStockIncentiveProgramMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_PeriodOfCliffVestingForOptionValuation": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period of cliff vesting for option valuation.",
        "label": "Period Of Cliff Vesting For Option Valuation",
        "terseLabel": "Period of cliff vesting for option valuation"
       }
      }
     },
     "localname": "PeriodOfCliffVestingForOptionValuation",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_PeriodOfGradedVestingForOptionValuation": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period of graded vesting for option valuation.",
        "label": "Period Of Graded Vesting For Option Valuation",
        "terseLabel": "Period of graded vesting for option valuation"
       }
      }
     },
     "localname": "PeriodOfGradedVestingForOptionValuation",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "lamr_PreferredStockCumulativeDividends": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Preferred stock, cumulative dividends.",
        "label": "Preferred Stock Cumulative Dividends",
        "terseLabel": "Preferred stock, cumulative dividends"
       }
      }
     },
     "localname": "PreferredStockCumulativeDividends",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "perShareItemType"
    },
    "lamr_PreferredStockDividendShares": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount paid and unpaid per share for dividends of preferred stock.",
        "label": "Preferred Stock Dividend Shares",
        "terseLabel": "Preferred stock dividend shares (in dollars per share)"
       }
      }
     },
     "localname": "PreferredStockDividendShares",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "perShareItemType"
    },
    "lamr_PreferredStockDividendsDeclared": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Preferred stock dividends declared",
        "label": "Preferred Stock Dividends Declared",
        "terseLabel": "Distributions accrued, preferred stockholders"
       }
      }
     },
     "localname": "PreferredStockDividendsDeclared",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_PreferredStockLiquidationValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total liquidation value of issued and outstanding preferred stock as of the balance sheet date.",
        "label": "Preferred Stock Liquidation Value",
        "terseLabel": "Liquidation value of outstanding preferred stock"
       }
      }
     },
     "localname": "PreferredStockLiquidationValue",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_ProceedsFromContributionsToParent": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeds from contributions to parent.",
        "label": "Proceeds From Contributions To Parent",
        "verboseLabel": "Contributions from (to) parent"
       }
      }
     },
     "localname": "ProceedsFromContributionsToParent",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Property Plant and Equipment Useful Life and Values [Abstract]",
        "label": "Property Plant And Equipment Useful Life And Values [Abstract]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentUsefulLifeAndValuesAbstract",
     "nsuri": "http://lamar.com/20210331",
     "xbrltype": "stringItemType"
    },
    "lamr_PuertoRicoCorporateMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Puerto Rico corporate.",
        "label": "Puerto Rico Corporate [Member]",
        "terseLabel": "Puerto Rico Corporate [Member]"
       }
      }
     },
     "localname": "PuertoRicoCorporateMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_RTCHoldingsLimitedLiabilityCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "RTC Holdings limited liability company.",
        "label": "R T C Holdings Limited Liability Company [Member]",
        "terseLabel": "RTC Holdings, LLC [Member]"
       }
      }
     },
     "localname": "RTCHoldingsLimitedLiabilityCompanyMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_RatioOfIndebtednessToNetCapitalMinimum": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ratio of indebtedness to net capital minimum.",
        "label": "Ratio Of Indebtedness To Net Capital Minimum",
        "terseLabel": "Ratio of indebtedness to net capital minimum"
       }
      }
     },
     "localname": "RatioOfIndebtednessToNetCapitalMinimum",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "pureItemType"
    },
    "lamr_RealEstateAccumulatedDepreciationForeignExchange": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate accumulated depreciation, foreign exchange.",
        "label": "Real Estate Accumulated Depreciation Foreign Exchange",
        "negatedLabel": "Foreign exchange"
       }
      }
     },
     "localname": "RealEstateAccumulatedDepreciationForeignExchange",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RealEstateAcquisitionsAdvertisingDisplays": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate, acquisitions, advertising displays.",
        "label": "Real Estate Acquisitions Advertising Displays",
        "terseLabel": "Acquisition of advertising displays"
       }
      }
     },
     "localname": "RealEstateAcquisitionsAdvertisingDisplays",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RealEstateAndAccumulatedDepreciationDateAcquiredOne": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate and accumulated depreciation, date acquired one.",
        "label": "Real Estate And Accumulated Depreciation Date Acquired One",
        "terseLabel": "Acquisition Date"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationDateAcquiredOne",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_RealEstateAndAccumulatedDepreciationDateOfConstructionOne": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate and accumulated depreciation date of construction one.",
        "label": "Real Estate And Accumulated Depreciation Date Of Construction One",
        "terseLabel": "Construction Date"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationDateOfConstructionOne",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_RealEstateCapitalExpenditureOnAdvertisementDisplays": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate capital expenditure on advertisement displays.",
        "label": "Real Estate Capital Expenditure On Advertisement Displays",
        "terseLabel": "Capital expenditures on new advertising displays"
       }
      }
     },
     "localname": "RealEstateCapitalExpenditureOnAdvertisementDisplays",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RealEstateForeignExchange": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Real estate, foreign exchange.",
        "label": "Real Estate Foreign Exchange",
        "negatedLabel": "Foreign exchange"
       }
      }
     },
     "localname": "RealEstateForeignExchange",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RedeemableOfEquityCarryingOutstandingAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Redeemable of equity carrying outstanding amount.",
        "label": "Redeemable Of Equity Carrying Outstanding Amount",
        "verboseLabel": "Debt Instrument Redemption outstanding Amount"
       }
      }
     },
     "localname": "RedeemableOfEquityCarryingOutstandingAmount",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RedemptionOfSeniorNotesAndSeniorSubordinatedNotes": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 41.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Redemption of senior notes and senior subordinated notes.",
        "label": "Redemption Of Senior Notes And Senior Subordinated Notes",
        "negatedLabel": "Redemption of senior notes and senior subordinated notes"
       }
      }
     },
     "localname": "RedemptionOfSeniorNotesAndSeniorSubordinatedNotes",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RegulatoryAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory Assets [Abstract]",
        "label": "Regulatory Assets [Abstract]"
       }
      }
     },
     "localname": "RegulatoryAssetsAbstract",
     "nsuri": "http://lamar.com/20210331",
     "xbrltype": "stringItemType"
    },
    "lamr_ReillyFamilyLimitedLiabilityCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reilly Family Limited Liability company.",
        "label": "Reilly Family Limited Liability Company [Member]",
        "terseLabel": "Reilly Family, LLC [Member]"
       }
      }
     },
     "localname": "ReillyFamilyLimitedLiabilityCompanyMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_RepaymentOfSeniorSubordinatedDebt": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 34.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Repayment of senior subordinated notes.",
        "label": "Repayment Of Senior Subordinated Debt",
        "negatedLabel": "Redemption of senior notes"
       }
      }
     },
     "localname": "RepaymentOfSeniorSubordinatedDebt",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_RestrictedStockAwardsToDirectorsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Restricted stock awards to directors.",
        "label": "Restricted Stock Awards To Directors [Member]",
        "verboseLabel": "Restricted Stock Awards to Directors [Member]"
       }
      }
     },
     "localname": "RestrictedStockAwardsToDirectorsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_RevenueAndExpenseRecognizedForAdvertisingBarterTransactionsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue and expense recognized for advertising barter transactions.",
        "label": "Revenue And Expense Recognized For Advertising Barter Transactions Table [Text Block]",
        "terseLabel": "Revenue and Expense Recognized for Advertising Barter Transactions"
       }
      }
     },
     "localname": "RevenueAndExpenseRecognizedForAdvertisingBarterTransactionsTableTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_ScheduleOfEffectiveIncomeTaxRateReconciliationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule Of Effective Income Tax Rate Reconciliation [Line Items]",
        "label": "Schedule Of Effective Income Tax Rate Reconciliation [Line Items]",
        "terseLabel": "Schedule Of Effective Income Tax Rate Reconciliation [Line Items]"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_ScheduleOfEffectiveIncomeTaxRateReconciliationTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule Of Effective Income Tax Rate Reconciliation [Table]",
        "label": "Schedule Of Effective Income Tax Rate Reconciliation [Table]",
        "terseLabel": "Schedule Of Effective Income Tax Rate Reconciliation [Table]"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_SeanEReillyAndKevinPReillyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sean E. Reilly and Kevin P. Reilly, Jr.",
        "label": "Sean E Reilly And Kevin P Reilly [Member]",
        "terseLabel": "Sean E. Reilly and Kevin P. Reilly, Jr. [Member]"
       }
      }
     },
     "localname": "SeanEReillyAndKevinPReillyMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SeanEReillyKevinPReillyPresidentAndFamiliesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sean E Reilly, Kevin P Reilly, President and Families.",
        "label": "Sean E Reilly Kevin P Reilly President And Families [Member]",
        "terseLabel": "Chief Executive Officer, Chairman of Board of Directors, President and Families [Member]"
       }
      }
     },
     "localname": "SeanEReillyKevinPReillyPresidentAndFamiliesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SeniorCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Credit Facility.",
        "label": "Senior Credit Facility [Member]",
        "terseLabel": "Senior Credit Facility [Member]"
       }
      }
     },
     "localname": "SeniorCreditFacilityMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SeniorOrSeniorSubordinatedNotesAndOtherIndebtednessMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Or Senior Subordinated Notes And Other Indebtedness",
        "label": "Senior Or Senior Subordinated Notes And Other Indebtedness [Member]",
        "verboseLabel": "Senior or Senior Subordinated Notes and other Indebtedness [Member]"
       }
      }
     },
     "localname": "SeniorOrSeniorSubordinatedNotesAndOtherIndebtednessMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SeriesAAPreferredStockMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Series AA preferred stock.",
        "label": "Series A A Preferred Stock [Member]",
        "terseLabel": "Series AA Preferred Stock [Member]"
       }
      }
     },
     "localname": "SeriesAAPreferredStockMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_ShareBasedCompensationArrangementByShareBasedPaymentAwardAccruedLiabilities": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share Based Compensation Arrangement By Share Based Payment Award Accrued Liabilities",
        "label": "Share Based Compensation Arrangement By Share Based Payment Award Accrued Liabilities",
        "terseLabel": "Stock-based compensation",
        "verboseLabel": "Accrued expenses, liability"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAccruedLiabilities",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share based compensation arrangement by share based payment award fair value assumptions and methodology.",
        "label": "Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions And Methodology Table [Text Block]",
        "terseLabel": "Weighted Average Assumptions"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyTableTextBlock",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "lamr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsHistoricalVolatilityRate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share based compensation arrangement by share based payment award fair value assumptions historical volatility rate.",
        "label": "Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Historical Volatility Rate",
        "terseLabel": "Expected Volatility"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsHistoricalVolatilityRate",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsImpliedVolatilityRateOnPubliclyTradedOptions": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share based compensation arrangement by share based payment award fair value assumptions implied volatility rate on publicly traded options.",
        "label": "Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Implied Volatility Rate On Publicly Traded Options",
        "terseLabel": "Volatility rate on publicly traded options"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsImpliedVolatilityRateOnPubliclyTradedOptions",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_SharesSubjectToAwardsAsPercentageOfTargetNumberOfShares": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Shares subject to awards as percentage of target number of shares.",
        "label": "Shares Subject To Awards As Percentage Of Target Number Of Shares",
        "terseLabel": "Range of awards of target number of share"
       }
      }
     },
     "localname": "SharesSubjectToAwardsAsPercentageOfTargetNumberOfShares",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "lamr_ShelfRegistrationMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Shelf Registration [Member]",
        "label": "Shelf Registration [Member]",
        "terseLabel": "Shelf Registration [Member]"
       }
      }
     },
     "localname": "ShelfRegistrationMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SiteLocationsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Site locations.",
        "label": "Site Locations [Member]",
        "terseLabel": "Site Locations [Member]"
       }
      }
     },
     "localname": "SiteLocationsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_StockIssuedDuringPeriodSharesPerformanceStockAwards": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Stock issued during period shares performance stock awards.",
        "label": "Stock Issued During Period Shares Performance Stock Awards",
        "terseLabel": "Issuance of common stock through performance stock awards"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesPerformanceStockAwards",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "lamr_StockRepurchaseProgramMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Stock repurchase program.",
        "label": "Stock Repurchase Program [Member]",
        "terseLabel": "Stock Repurchase Program [Member]"
       }
      }
     },
     "localname": "StockRepurchaseProgramMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_SupplementalDisclosureOfNonCashInvestingAndFinancingInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Supplemental disclosure of non cash investing and financing information.",
        "label": "Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]",
        "terseLabel": "Supplemental Disclosure Of Non Cash Investing And Financing Information [Line Items]"
       }
      }
     },
     "localname": "SupplementalDisclosureOfNonCashInvestingAndFinancingInformationLineItems",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_SupplementalDisclosureOfNonCashInvestingAndFinancingInformationTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Supplemental disclosure of non cash investing and financing information.",
        "label": "Supplemental Disclosure Of Non Cash Investing And Financing Information [Table]",
        "terseLabel": "Supplemental Disclosure Of Non Cash Investing And Financing Information [Table]"
       }
      }
     },
     "localname": "SupplementalDisclosureOfNonCashInvestingAndFinancingInformationTable",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "lamr_TaxCutsAndJobsActOf2017RemainingAlternativeMinimumTaxCreditCarryforwardIncompleteAccountingProvisionalIncomeTaxExpenseBenefit": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax Cuts and Jobs Act of 2017 remaining alternative minimum tax credit carryforward incomplete accounting provisional income tax expense (benefit).",
        "label": "Tax Cuts And Jobs Act Of2017 Remaining Alternative Minimum Tax Credit Carryforward Incomplete Accounting Provisional Income Tax Expense Benefit",
        "negatedLabel": "Remaining minimum tax credit carryforward, cash benefit"
       }
      }
     },
     "localname": "TaxCutsAndJobsActOf2017RemainingAlternativeMinimumTaxCreditCarryforwardIncompleteAccountingProvisionalIncomeTaxExpenseBenefit",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "lamr_TaxableIncomeDistributionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Taxable Income Distribution",
        "label": "Taxable Income Distribution [Member]",
        "terseLabel": "Taxable Income Distribution [Member]"
       }
      }
     },
     "localname": "TaxableIncomeDistributionMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TermALoanFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Term A Loan Facility.",
        "label": "Term A Loan Facility [Member]",
        "terseLabel": "Term A Loan Facility [Member]"
       }
      }
     },
     "localname": "TermALoanFacilityMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TermBLoanFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Term B loan facility.",
        "label": "Term B Loan Facility [Member]",
        "terseLabel": "Term B Loan Facility [Member]"
       }
      }
     },
     "localname": "TermBLoanFacilityMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TerminationOfLeaseAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Termination of lease agreement.",
        "label": "Termination Of Lease Agreement [Member]",
        "terseLabel": "Termination of Lease Agreements [Member]"
       }
      }
     },
     "localname": "TerminationOfLeaseAgreementMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_ThreePointFiveByEightPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Three point five by eight percent senior notes.",
        "label": "Three Point Five By Eight Percent Senior Notes [Member]",
        "terseLabel": "3 5/8% Senior Notes [Member]",
        "verboseLabel": "3 5/8% Senior Notes [Member]"
       }
      }
     },
     "localname": "ThreePointFiveByEightPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_ThreePointThreeByFourPercentSeniorNotesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Three point three by four percent senior notes.",
        "label": "Three Point Three By Four Percent Senior Notes [Member]",
        "terseLabel": "3 3/4% Senior Notes [Member]"
       }
      }
     },
     "localname": "ThreePointThreeByFourPercentSeniorNotesMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TransitAdvertisingMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Transit advertising.",
        "label": "Transit Advertising [Member]",
        "terseLabel": "Transit Advertising [Member]"
       }
      }
     },
     "localname": "TransitAdvertisingMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TwoThousandNineteenAcquisitionsExcludingFairwayAssetsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two thousand nineteen acquisitions excluding fairway assets member.",
        "label": "Two Thousand Nineteen Acquisitions Excluding Fairway Assets [Member]",
        "terseLabel": "2019 Acquisitions Excluding Fairway Assets [Member]"
       }
      }
     },
     "localname": "TwoThousandNineteenAcquisitionsExcludingFairwayAssetsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TwoThousandNineteenAcquisitionsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two thousand nineteen acquisitions.",
        "label": "Two Thousand Nineteen Acquisitions [Member]",
        "terseLabel": "2019 Acquisitions [Member]"
       }
      }
     },
     "localname": "TwoThousandNineteenAcquisitionsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail",
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TwoThousandNineteenEmployeeStockPurchasePlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two thousand nineteen employee stock purchase plan.",
        "label": "Two Thousand Nineteen Employee Stock Purchase Plan [Member]",
        "terseLabel": "2019 Employee Stock Purchase Plan [Member]"
       }
      }
     },
     "localname": "TwoThousandNineteenEmployeeStockPurchasePlanMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_TwoThousandTwentyAcquisitionsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two Thousand Twenty Acquisitions Member",
        "label": "Two Thousand Twenty Acquisitions [Member]",
        "terseLabel": "2020 Acquisitions [Member]"
       }
      }
     },
     "localname": "TwoThousandTwentyAcquisitionsMember",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "domainItemType"
    },
    "lamr_VestingPeriodOnEntityMatchedContribution": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Vesting period on entity matched contribution.",
        "label": "Vesting Period On Entity Matched Contribution",
        "terseLabel": "Fully vesting period of contribution"
       }
      }
     },
     "localname": "VestingPeriodOnEntityMatchedContribution",
     "nsuri": "http://lamar.com/20210331",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "srt_CondensedFinancialStatementsTextBlock": {
     "auth_ref": [
      "r742",
      "r745",
      "r748",
      "r749",
      "r750"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for condensed financial statements.",
        "label": "Condensed Financial Statements [Text Block]",
        "terseLabel": "Summarized Financial Information of Subsidiaries"
       }
      }
     },
     "localname": "CondensedFinancialStatementsTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_ConsolidatedEntitiesAxis": {
     "auth_ref": [
      "r556",
      "r557",
      "r562",
      "r563",
      "r734",
      "r739"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by consolidated entity or group of entities.",
        "label": "Consolidated Entities [Axis]",
        "terseLabel": "Consolidated Entities"
       }
      }
     },
     "localname": "ConsolidatedEntitiesAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses",
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
      "http://lamar.com/role/AccruedExpensesTables",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
      "http://lamar.com/role/LongTermDebt",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail",
      "http://lamar.com/role/LongTermDebtTables",
      "http://lamar.com/role/NonCashFinancingActivities",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
      "http://lamar.com/role/RelatedPartyTransactions",
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail",
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail",
      "http://lamar.com/role/SignificantAccountingPolicies",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesDomain": {
     "auth_ref": [
      "r556",
      "r557",
      "r562",
      "r563"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entity or group of entities consolidated into reporting entity.",
        "label": "Consolidated Entities [Domain]",
        "terseLabel": "Consolidated Entities"
       }
      }
     },
     "localname": "ConsolidatedEntitiesDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses",
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
      "http://lamar.com/role/AccruedExpensesTables",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
      "http://lamar.com/role/LongTermDebt",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail",
      "http://lamar.com/role/LongTermDebtTables",
      "http://lamar.com/role/NonCashFinancingActivities",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
      "http://lamar.com/role/RelatedPartyTransactions",
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail",
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail",
      "http://lamar.com/role/SignificantAccountingPolicies",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ConsolidationEliminationsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Eliminating entries used in consolidating a parent entity and its subsidiaries.",
        "label": "Consolidation, Eliminations [Member]",
        "terseLabel": "Eliminations [Member]"
       }
      }
     },
     "localname": "ConsolidationEliminationsMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ConsolidationItemsAxis": {
     "auth_ref": [
      "r189",
      "r195",
      "r196",
      "r197",
      "r198",
      "r199",
      "r201",
      "r205"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by components, eliminations, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.",
        "label": "Consolidation Items [Axis]",
        "terseLabel": "Consolidation Items"
       }
      }
     },
     "localname": "ConsolidationItemsAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidationItemsDomain": {
     "auth_ref": [
      "r189",
      "r195",
      "r196",
      "r197",
      "r198",
      "r199",
      "r201",
      "r205"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Components, elimination, non-segment corporate-level activity and reconciling items used in consolidating a parent entity and its subsidiaries or its operating segments.",
        "label": "Consolidation Items [Domain]",
        "terseLabel": "Consolidation Items"
       }
      }
     },
     "localname": "ConsolidationItemsDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ContractualObligationFiscalYearMaturityScheduleTableTextBlock": {
     "auth_ref": [
      "r737"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation.",
        "label": "Contractual Obligation, Fiscal Year Maturity [Table Text Block]",
        "terseLabel": "Summary of Minimum Payments Related to Agreements"
       }
      }
     },
     "localname": "ContractualObligationFiscalYearMaturityScheduleTableTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_GuarantorSubsidiariesMember": {
     "auth_ref": [
      "r298",
      "r746"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entity owned or controlled by another entity which has guaranteed the issue of securities by another subsidiary of the parent or has guaranteed the issue of securities by the parent.",
        "label": "Guarantor Subsidiaries [Member]",
        "terseLabel": "Guarantor Subsidiaries [Member]"
       }
      }
     },
     "localname": "GuarantorSubsidiariesMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MajorCustomersAxis": {
     "auth_ref": [
      "r211",
      "r338",
      "r343",
      "r704"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name or description of a single external customer or a group of external customers.",
        "label": "Customer [Axis]",
        "terseLabel": "Customer"
       }
      }
     },
     "localname": "MajorCustomersAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_MaximumMember": {
     "auth_ref": [
      "r434",
      "r439",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r646",
      "r701",
      "r705"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Upper limit of the provided range.",
        "label": "Maximum [Member]",
        "terseLabel": "Maximum [Member]"
       }
      }
     },
     "localname": "MaximumMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MinimumMember": {
     "auth_ref": [
      "r434",
      "r439",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r646",
      "r701",
      "r705"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Lower limit of the provided range.",
        "label": "Minimum [Member]",
        "terseLabel": "Minimum [Member]"
       }
      }
     },
     "localname": "MinimumMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_NameOfMajorCustomerDomain": {
     "auth_ref": [
      "r211",
      "r338",
      "r343",
      "r704"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Single external customer or group of external customers.",
        "label": "Customer [Domain]",
        "terseLabel": "Customer"
       }
      }
     },
     "localname": "NameOfMajorCustomerDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_NonGuarantorSubsidiariesMember": {
     "auth_ref": [
      "r299",
      "r747"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entity owned or controlled by another entity which has not guaranteed the issue of securities by another subsidiary of the parent or has not guaranteed the issue of securities by the parent.",
        "label": "Non-Guarantor Subsidiaries [Member]",
        "terseLabel": "Non-Guarantor Subsidiaries [Member]"
       }
      }
     },
     "localname": "NonGuarantorSubsidiariesMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_OwnershipAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of entity in which ownership interest is disclosed. Excludes equity method investee and named security investment.",
        "label": "Ownership [Axis]",
        "terseLabel": "Ownership"
       }
      }
     },
     "localname": "OwnershipAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_OwnershipDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of entity in which ownership interest is disclosed. Excludes equity method investee and named security investment.",
        "label": "Ownership [Domain]",
        "terseLabel": "Ownership"
       }
      }
     },
     "localname": "OwnershipDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ParentCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The registrant that controls, directly or indirectly, another entity (or entities). The usual condition for control is ownership of a majority (over 50%) of the outstanding voting stock. The power to control may also exist with a lesser percentage of ownership, for example, by contract, lease, agreement with other stockholders or by court decree.",
        "label": "Parent Company [Member]",
        "terseLabel": "Lamar Media [Member]"
       }
      }
     },
     "localname": "ParentCompanyMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ProductOrServiceAxis": {
     "auth_ref": [
      "r207",
      "r338",
      "r341",
      "r647",
      "r700",
      "r702"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by product and service, or group of similar products and similar services.",
        "label": "Product and Service [Axis]",
        "terseLabel": "Product and Service"
       }
      }
     },
     "localname": "ProductOrServiceAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ProductsAndServicesDomain": {
     "auth_ref": [
      "r207",
      "r338",
      "r341",
      "r647",
      "r700",
      "r702"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Product or service, or a group of similar products or similar services.",
        "label": "Product and Service [Domain]",
        "terseLabel": "Product and Service"
       }
      }
     },
     "localname": "ProductsAndServicesDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RangeAxis": {
     "auth_ref": [
      "r381",
      "r434",
      "r439",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r646",
      "r701",
      "r705"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Statistical Measurement [Axis]",
        "terseLabel": "Statistical Measurement"
       }
      }
     },
     "localname": "RangeAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RangeMember": {
     "auth_ref": [
      "r381",
      "r434",
      "r439",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r646",
      "r701",
      "r705"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.",
        "label": "Statistical Measurement [Domain]",
        "terseLabel": "Statistical Measurement"
       }
      }
     },
     "localname": "RangeMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances": {
     "auth_ref": [
      "r725",
      "r741"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances",
        "terseLabel": "Encumbrances"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationAmountOfEncumbrances",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationByPropertyTable": {
     "auth_ref": [
      "r735",
      "r744"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about real estate investments and accompanying accumulated depreciation for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table]",
        "terseLabel": "SEC Schedule III, Real Estate and Accumulated Depreciation, by Property [Table]"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationByPropertyTable",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis": {
     "auth_ref": [
      "r725",
      "r726",
      "r727",
      "r728",
      "r729",
      "r730",
      "r731",
      "r732",
      "r744",
      "r752"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of property.",
        "label": "Name of Property [Axis]",
        "terseLabel": "Name of Property"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationDisclosureAbstract",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock": {
     "auth_ref": [
      "r735",
      "r744"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of real estate investments and associated accumulated depreciation for entities with a significant portion of their business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block]",
        "terseLabel": "Schedule III - Real Estate and Accumulated Depreciation"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationDisclosureTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]",
        "terseLabel": "SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationLineItems",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationParentheticalDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain": {
     "auth_ref": [
      "r725",
      "r726",
      "r727",
      "r728",
      "r729",
      "r730",
      "r731",
      "r732"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the property, for example, but not limited to, ABC Shopping Center.",
        "label": "Name of Property [Domain]",
        "terseLabel": "Name of Property"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationNameOfPropertyDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ReportableLegalEntitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Legal entities of the consolidated entity reporting separate financial information in the entity's financial statements.",
        "label": "Reportable Legal Entities [Member]",
        "terseLabel": "Reportable Legal Entities [Member]"
       }
      }
     },
     "localname": "ReportableLegalEntitiesMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_SECScheduleIIIRealEstateNumberOfUnits": {
     "auth_ref": [
      "r733",
      "r738"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of units of real estate held for investment for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Number of Units",
        "terseLabel": "Number of advertising displays"
       }
      }
     },
     "localname": "SECScheduleIIIRealEstateNumberOfUnits",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "srt_ScheduleOfCondensedBalanceSheetTableTextBlock": {
     "auth_ref": [
      "r751"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.",
        "label": "Condensed Balance Sheet [Table Text Block]",
        "terseLabel": "Condensed Consolidating Balance Sheet"
       }
      }
     },
     "localname": "ScheduleOfCondensedBalanceSheetTableTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_ScheduleOfCondensedCashFlowStatementTableTextBlock": {
     "auth_ref": [
      "r751"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations.",
        "label": "Condensed Cash Flow Statement [Table Text Block]",
        "terseLabel": "Condensed Consolidating Statements of Cash Flows"
       }
      }
     },
     "localname": "ScheduleOfCondensedCashFlowStatementTableTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_ScheduleOfCondensedIncomeStatementTableTextBlock": {
     "auth_ref": [
      "r751"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations.",
        "label": "Condensed Income Statement [Table Text Block]",
        "terseLabel": "Condensed Consolidating Statements of Income and Comprehensive Income"
       }
      }
     },
     "localname": "ScheduleOfCondensedIncomeStatementTableTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock": {
     "auth_ref": [
      "r131",
      "r743"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]",
        "terseLabel": "Schedule II - Valuation and Qualifying Accounts"
       }
      }
     },
     "localname": "ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts"
     ],
     "xbrltype": "textBlockItemType"
    },
    "srt_SegmentGeographicalDomain": {
     "auth_ref": [
      "r208",
      "r209",
      "r338",
      "r342",
      "r703",
      "r725",
      "r726",
      "r727",
      "r728",
      "r729",
      "r730",
      "r731",
      "r732"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Geographical area.",
        "label": "Geographical [Domain]",
        "terseLabel": "Geographical"
       }
      }
     },
     "localname": "SegmentGeographicalDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_StatementGeographicalAxis": {
     "auth_ref": [
      "r208",
      "r209",
      "r338",
      "r342",
      "r703",
      "r720",
      "r725",
      "r726",
      "r727",
      "r728",
      "r729",
      "r730",
      "r731",
      "r732",
      "r733",
      "r738",
      "r740"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by geographical components.",
        "label": "Geographical [Axis]",
        "terseLabel": "Geographical"
       }
      }
     },
     "localname": "StatementGeographicalAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail",
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SubsidiariesMember": {
     "auth_ref": [
      "r407",
      "r606",
      "r607",
      "r610"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entity owned or controlled by another entity.",
        "label": "Subsidiaries [Member]",
        "terseLabel": "LAMAR MEDIA CORP [Member]"
       }
      }
     },
     "localname": "SubsidiariesMember",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_TitleOfIndividualAxis": {
     "auth_ref": [
      "r213",
      "r609"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by title of individual or nature of relationship to individual or group of individuals.",
        "label": "Title of Individual [Axis]"
       }
      }
     },
     "localname": "TitleOfIndividualAxis",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_TitleOfIndividualWithRelationshipToEntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Title of individual, or nature of relationship to individual or group of individuals.",
        "label": "Title of Individual [Domain]"
       }
      }
     },
     "localname": "TitleOfIndividualWithRelationshipToEntityDomain",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ValuationAndQualifyingAccountsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]"
       }
      }
     },
     "localname": "ValuationAndQualifyingAccountsAbstract",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_ValuationAndQualifyingAccountsDisclosureLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]",
        "terseLabel": "Valuation and Qualifying Accounts Disclosure [Line Items]"
       }
      }
     },
     "localname": "ValuationAndQualifyingAccountsDisclosureLineItems",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ValuationAndQualifyingAccountsDisclosureTable": {
     "auth_ref": [
      "r131",
      "r743"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table]",
        "terseLabel": "Valuation And Qualifying Accounts Disclosure [Table]"
       }
      }
     },
     "localname": "ValuationAndQualifyingAccountsDisclosureTable",
     "nsuri": "http://fasb.org/srt/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountingPoliciesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting Policies [Abstract]"
       }
      }
     },
     "localname": "AccountingPoliciesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountingStandardsUpdate201409Member": {
     "auth_ref": [
      "r352"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accounting Standards Update 2014-09 Revenue from Contracts with Customers (Topic 606).",
        "label": "Accounting Standards Update 2014-09 [Member]",
        "terseLabel": "ASC 606 [Member]"
       }
      }
     },
     "localname": "AccountingStandardsUpdate201409Member",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock": {
     "auth_ref": [
      "r35"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period.",
        "label": "Accounts Payable and Accrued Liabilities Disclosure [Text Block]",
        "terseLabel": "Accrued Expenses"
       }
      }
     },
     "localname": "AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AccountsPayableCurrent": {
     "auth_ref": [
      "r34"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 3.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accounts Payable, Current",
        "terseLabel": "Trade accounts payable"
       }
      }
     },
     "localname": "AccountsPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccountsReceivableNetCurrent": {
     "auth_ref": [
      "r3",
      "r21",
      "r214",
      "r215"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 24.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.",
        "label": "Accounts Receivable, after Allowance for Credit Loss, Current",
        "terseLabel": "Receivables, net of allowance for doubtful accounts"
       }
      }
     },
     "localname": "AccountsReceivableNetCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedInsuranceCurrent": {
     "auth_ref": [
      "r7",
      "r8",
      "r40"
     ],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Insurance, Current",
        "terseLabel": "Insurance benefits"
       }
      }
     },
     "localname": "AccruedInsuranceCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccruedLiabilitiesCurrent": {
     "auth_ref": [
      "r40"
     ],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 6.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accrued Liabilities, Current",
        "terseLabel": "Accrued expenses",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "AccruedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": {
     "auth_ref": [
      "r32",
      "r279"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 28.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
        "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
        "negatedLabel": "Less accumulated depreciation and amortization"
       }
      }
     },
     "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": {
     "auth_ref": [
      "r24",
      "r52",
      "r53",
      "r54",
      "r690",
      "r713",
      "r717"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 19.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.",
        "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax",
        "terseLabel": "Accumulated comprehensive income"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife": {
     "auth_ref": [
      "r268"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Acquired Finite-lived Intangible Assets, Weighted Average Useful Life",
        "terseLabel": "Weighted average useful life"
       }
      }
     },
     "localname": "AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_AdditionalPaidInCapitalCommonStock": {
     "auth_ref": [
      "r22"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 18.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.",
        "label": "Additional Paid in Capital, Common Stock",
        "terseLabel": "Additional paid-in capital"
       }
      }
     },
     "localname": "AdditionalPaidInCapitalCommonStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdditionalPaidInCapitalMember": {
     "auth_ref": [
      "r133",
      "r134",
      "r135",
      "r474",
      "r475",
      "r476"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders.",
        "label": "Additional Paid-in Capital [Member]",
        "terseLabel": "Additional Paid-in Capital [Member]"
       }
      }
     },
     "localname": "AdditionalPaidInCapitalMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": {
     "auth_ref": [
      "r138",
      "r139",
      "r140",
      "r142",
      "r221",
      "r222",
      "r223",
      "r224",
      "r227",
      "r228",
      "r470",
      "r471",
      "r472",
      "r473",
      "r474",
      "r475",
      "r476",
      "r478",
      "r517",
      "r518",
      "r519",
      "r520",
      "r649",
      "r650",
      "r651",
      "r706",
      "r707",
      "r708",
      "r709",
      "r710",
      "r711",
      "r712",
      "r713",
      "r714",
      "r715",
      "r716",
      "r717"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by amendment to accounting standards.",
        "label": "Accounting Standards Update [Axis]",
        "terseLabel": "Adjustments for New Accounting Pronouncements"
       }
      }
     },
     "localname": "AdjustmentsForNewAccountingPronouncementsAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:"
       }
      }
     },
     "localname": "AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue": {
     "auth_ref": [
      "r441",
      "r443",
      "r481",
      "r482"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.",
        "label": "APIC, Share-based Payment Arrangement, Increase for Cost Recognition",
        "terseLabel": "Non-cash compensation"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts": {
     "auth_ref": [
      "r308",
      "r315"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.",
        "label": "Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs",
        "terseLabel": "Issuance of common stock through stock awards"
       }
      }
     },
     "localname": "AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AdvertisingMember": {
     "auth_ref": [
      "r341"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Announcement promoting product, service, or event.",
        "label": "Advertising [Member]",
        "terseLabel": "Advertising [Member]",
        "verboseLabel": "Direct Advertising Expenses (Exclusive of Depreciation and Amortization) [Member]"
       }
      }
     },
     "localname": "AdvertisingMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail",
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AllocatedShareBasedCompensationExpense": {
     "auth_ref": [
      "r443",
      "r467",
      "r480"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.",
        "label": "Share-based Payment Arrangement, Expense",
        "terseLabel": "Compensation expense related to performance based compensation agreements"
       }
      }
     },
     "localname": "AllocatedShareBasedCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AllowanceForCreditLossMember": {
     "auth_ref": [
      "r130"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Allowance for credit loss from right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.",
        "label": "SEC Schedule, 12-09, Allowance, Credit Loss [Member]",
        "terseLabel": "Deducted in Balance Sheet from Trade Accounts Receivable: Allowance for Doubtful Accounts [Member]"
       }
      }
     },
     "localname": "AllowanceForCreditLossMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent": {
     "auth_ref": [
      "r28",
      "r216",
      "r232"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of allowance for credit loss on accounts receivable, classified as current.",
        "label": "Accounts Receivable, Allowance for Credit Loss, Current",
        "terseLabel": "Allowance for doubtful accounts"
       }
      }
     },
     "localname": "AllowanceForDoubtfulAccountsReceivableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfFinancingCosts": {
     "auth_ref": [
      "r69",
      "r96",
      "r585"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization expense attributable to debt issuance costs.",
        "label": "Amortization of Debt Issuance Costs",
        "terseLabel": "Amortization included in interest expense"
       }
      }
     },
     "localname": "AmortizationOfFinancingCosts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfIntangibleAssets": {
     "auth_ref": [
      "r96",
      "r266",
      "r273"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "label": "Amortization of Intangible Assets",
        "terseLabel": "Amortization expense"
       }
      }
     },
     "localname": "AmortizationOfIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount": {
     "auth_ref": [
      "r165"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.",
        "label": "Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount",
        "terseLabel": "The number of dilutive shares excluded from calculation of basic earnings per share resulting from the anti-dilutive effect for stock options"
       }
      }
     },
     "localname": "AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/EarningsPerShareAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ArrangementsAndNonarrangementTransactionsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.",
        "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Domain]",
        "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative"
       }
      }
     },
     "localname": "ArrangementsAndNonarrangementTransactionsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AssetRetirementObligationAccretionExpense": {
     "auth_ref": [
      "r284",
      "r288"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.",
        "label": "Asset Retirement Obligation, Accretion Expense",
        "terseLabel": "Accretion expense"
       }
      }
     },
     "localname": "AssetRetirementObligationAccretionExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligationsInformationRelatedToAssetRetirementObligationsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Retirement Obligation Disclosure [Abstract]"
       }
      }
     },
     "localname": "AssetRetirementObligationDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetRetirementObligationDisclosureTextBlock": {
     "auth_ref": [
      "r290"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligation Disclosure [Text Block]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligations"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_AssetRetirementObligationLiabilitiesIncurred": {
     "auth_ref": [
      "r286"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset retirement obligations incurred during the period.",
        "label": "Asset Retirement Obligation, Liabilities Incurred",
        "terseLabel": "Additions to asset retirement obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationLiabilitiesIncurred",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligationsInformationRelatedToAssetRetirementObligationsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationLiabilitiesSettled": {
     "auth_ref": [
      "r287"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.",
        "label": "Asset Retirement Obligation, Liabilities Settled",
        "negatedLabel": "Liabilities settled"
       }
      }
     },
     "localname": "AssetRetirementObligationLiabilitiesSettled",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligationsInformationRelatedToAssetRetirementObligationsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationsNoncurrent": {
     "auth_ref": [
      "r285"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 12.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligations, Noncurrent",
        "periodEndLabel": "Ending Balance",
        "periodStartLabel": "Beginning Balance",
        "terseLabel": "Asset retirement obligation"
       }
      }
     },
     "localname": "AssetRetirementObligationsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligationsInformationRelatedToAssetRetirementObligationsDetail",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationsPolicy": {
     "auth_ref": [
      "r107",
      "r289"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for legal obligation associated with retirement of long-lived asset that results from acquisition, construction, or development or from normal operation of long-lived asset. Excludes environmental remediation liability from improper or other-than-normal operation of long-lived asset, obligation arising in connection with leased property that meets definition of lease payments or variable lease payments and from plan to sell or otherwise dispose of a long-lived asset.",
        "label": "Asset Retirement Obligation [Policy Text Block]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_Assets": {
     "auth_ref": [
      "r111",
      "r193",
      "r197",
      "r203",
      "r220",
      "r556",
      "r562",
      "r572",
      "r670",
      "r688"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets",
        "totalLabel": "Total assets"
       }
      }
     },
     "localname": "Assets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets [Abstract]",
        "terseLabel": "ASSETS"
       }
      }
     },
     "localname": "AssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsCurrent": {
     "auth_ref": [
      "r4",
      "r5",
      "r50",
      "r111",
      "r220",
      "r556",
      "r562",
      "r572"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 22.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets, Current",
        "terseLabel": "Total current assets",
        "totalLabel": "Total current assets"
       }
      }
     },
     "localname": "AssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets, Current [Abstract]",
        "terseLabel": "Current assets:"
       }
      }
     },
     "localname": "AssetsCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets Of Disposal Group Including Discontinued Operation [Abstract]"
       }
      }
     },
     "localname": "AssetsOfDisposalGroupIncludingDiscontinuedOperationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AwardTypeAxis": {
     "auth_ref": [
      "r444",
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of award under share-based payment arrangement.",
        "label": "Award Type [Axis]",
        "terseLabel": "Award Type"
       }
      }
     },
     "localname": "AwardTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by location on balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Axis]",
        "terseLabel": "Balance Sheet Location"
       }
      }
     },
     "localname": "BalanceSheetLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationDomain": {
     "auth_ref": [
      "r566",
      "r567"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Location in the balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Domain]",
        "terseLabel": "Balance Sheet Location"
       }
      }
     },
     "localname": "BalanceSheetLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BaseRateMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum rate investor will accept.",
        "label": "Base Rate [Member]",
        "terseLabel": "Base Rate [Member]"
       }
      }
     },
     "localname": "BaseRateMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BuildingAndBuildingImprovementsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Facility held for productive use including, but not limited to, office, production, storage and distribution facilities and any addition, improvement, or renovation to the structure, for example, but not limited to, interior masonry, interior flooring, electrical, and plumbing.",
        "label": "Building and Building Improvements [Member]",
        "terseLabel": "Building and Improvements [Member]"
       }
      }
     },
     "localname": "BuildingAndBuildingImprovementsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BusinessAcquisitionAcquireeDomain": {
     "auth_ref": [
      "r430",
      "r435"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identification of the acquiree in a material business combination (or series of individually immaterial business combinations), which may include the name or other type of identification of the acquiree.",
        "label": "Business Acquisition, Acquiree [Domain]",
        "terseLabel": "Business Acquisition, Acquiree"
       }
      }
     },
     "localname": "BusinessAcquisitionAcquireeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail",
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BusinessAcquisitionAxis": {
     "auth_ref": [
      "r430",
      "r435",
      "r541",
      "r542"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by business combination or series of individually immaterial business combinations.",
        "label": "Business Acquisition [Axis]",
        "terseLabel": "Business Acquisition"
       }
      }
     },
     "localname": "BusinessAcquisitionAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail",
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BusinessAcquisitionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Business Acquisition [Line Items]",
        "terseLabel": "Business Acquisition [Line Items]"
       }
      }
     },
     "localname": "BusinessAcquisitionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic": {
     "auth_ref": [
      "r539",
      "r540"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.",
        "label": "Business Acquisition, Pro Forma Earnings Per Share, Basic",
        "terseLabel": "Net income per common share \u2014 basic"
       }
      }
     },
     "localname": "BusinessAcquisitionProFormaEarningsPerShareBasic",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted": {
     "auth_ref": [
      "r539",
      "r540"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.",
        "label": "Business Acquisition, Pro Forma Earnings Per Share, Diluted",
        "terseLabel": "Net income per common share \u2014 diluted"
       }
      }
     },
     "localname": "BusinessAcquisitionProFormaEarningsPerShareDiluted",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_BusinessAcquisitionProFormaInformationTextBlock": {
     "auth_ref": [
      "r539",
      "r540"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate.",
        "label": "Business Acquisition, Pro Forma Information [Table Text Block]",
        "terseLabel": "Summary of Unaudited Pro Forma Financial Information"
       }
      }
     },
     "localname": "BusinessAcquisitionProFormaInformationTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount": {
     "auth_ref": [
      "r551"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.",
        "label": "Business Acquisition, Goodwill, Expected Tax Deductible Amount",
        "terseLabel": "Amount deductible for tax purposes"
       }
      }
     },
     "localname": "BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss": {
     "auth_ref": [
      "r539",
      "r540"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.",
        "label": "Business Acquisition, Pro Forma Net Income (Loss)",
        "terseLabel": "Net income applicable to common stock"
       }
      }
     },
     "localname": "BusinessAcquisitionsProFormaNetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessAcquisitionsProFormaRevenue": {
     "auth_ref": [
      "r539",
      "r540"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.",
        "label": "Business Acquisition, Pro Forma Revenue",
        "terseLabel": "Net revenues"
       }
      }
     },
     "localname": "BusinessAcquisitionsProFormaRevenue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable": {
     "auth_ref": [
      "r547",
      "r548"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.",
        "label": "Business Combination, Consideration Transferred, Equity Interests Issued and Issuable",
        "terseLabel": "Issuance of shares related to acquisition, value"
       }
      }
     },
     "localname": "BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationDisclosureTextBlock": {
     "auth_ref": [
      "r552"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).",
        "label": "Business Combination Disclosure [Text Block]",
        "terseLabel": "Acquisitions"
       }
      }
     },
     "localname": "BusinessCombinationDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Acquisitions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles": {
     "auth_ref": [
      "r545"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete.",
        "label": "Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles",
        "negatedLabel": "Reduction to preliminary purchase price allocation of goodwill"
       }
      }
     },
     "localname": "BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets": {
     "auth_ref": [
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets",
        "terseLabel": "Current assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities": {
     "auth_ref": [
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities",
        "negatedLabel": "Current liabilities"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities": {
     "auth_ref": [
      "r544"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities",
        "terseLabel": "Income tax benefit recorded in deferred tax liabilities"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill": {
     "auth_ref": [
      "r544"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of intangible assets, excluding goodwill, acquired at the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill",
        "terseLabel": "Total acquired intangible assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles": {
     "auth_ref": [
      "r543",
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of identifiable intangible assets recognized as of the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles",
        "terseLabel": "Finite lived intangible assets",
        "verboseLabel": "Total acquired intangible assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet": {
     "auth_ref": [
      "r543",
      "r544"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net",
        "terseLabel": "Total purchase price of outdoor advertising assets"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther": {
     "auth_ref": [
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 9.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other",
        "negatedLabel": "Other liabilities"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment": {
     "auth_ref": [
      "r543",
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of property, plant, and equipment recognized as of the acquisition date.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment",
        "terseLabel": "Property, plant and equipment"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet": {
     "auth_ref": [
      "r544"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.",
        "label": "Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net",
        "terseLabel": "Total purchase price of outdoor advertising assets",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_BusinessCombinationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Business Combinations [Abstract]"
       }
      }
     },
     "localname": "BusinessCombinationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_BusinessCombinationsPolicy": {
     "auth_ref": [
      "r107",
      "r537"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for completed business combinations (purchase method, acquisition method or combination of entities under common control). This accounting policy may include a general discussion of the purchase method or acquisition method of accounting (including for example, the treatment accorded contingent consideration, the identification of assets and liabilities, the purchase price allocation process, how the fair values of acquired assets and liabilities are determined) and the entity's specific application thereof. An entity that acquires another entity in a leveraged buyout transaction generally discloses the accounting policy followed by the acquiring entity in determining the basis used to value its interest in the acquired entity, and the rationale for that accounting policy.",
        "label": "Business Combinations Policy [Policy Text Block]",
        "terseLabel": "Acquisitions"
       }
      }
     },
     "localname": "BusinessCombinationsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r132",
      "r184"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for the business description and accounting policies concepts.  Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Accounting policies describe all significant accounting policies of the reporting entity.",
        "label": "Business Description and Accounting Policies [Text Block]",
        "terseLabel": "Significant Accounting Policies"
       }
      }
     },
     "localname": "BusinessDescriptionAndAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CapitalizedContractCostLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Capitalized Contract Cost [Line Items]",
        "terseLabel": "Capitalized Contract Cost [Line Items]"
       }
      }
     },
     "localname": "CapitalizedContractCostLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CapitalizedContractCostNetCurrent": {
     "auth_ref": [
      "r254"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.",
        "label": "Capitalized Contract Cost, Net, Current",
        "terseLabel": "Capitalized contract cost, net current"
       }
      }
     },
     "localname": "CapitalizedContractCostNetCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CapitalizedContractCostTable": {
     "auth_ref": [
      "r254"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about cost capitalized in obtaining or fulfilling contract with customer.",
        "label": "Capitalized Contract Cost [Table]",
        "terseLabel": "Capitalized Contract Cost [Table]"
       }
      }
     },
     "localname": "CapitalizedContractCostTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CashAcquiredFromAcquisition": {
     "auth_ref": [
      "r77"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).",
        "label": "Cash Acquired from Acquisition",
        "terseLabel": "Cash acquired in acquisitions"
       }
      }
     },
     "localname": "CashAcquiredFromAcquisition",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsAtCarryingValue": {
     "auth_ref": [
      "r2",
      "r29",
      "r98"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 23.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.",
        "label": "Cash and Cash Equivalents, at Carrying Value",
        "terseLabel": "Cash and cash equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsPolicyTextBlock": {
     "auth_ref": [
      "r10",
      "r99",
      "r107"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value.",
        "label": "Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Cash and Cash Equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations": {
     "auth_ref": [
      "r91",
      "r98",
      "r104"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations",
        "periodEndLabel": "Cash and cash equivalents at end of period",
        "periodStartLabel": "Cash and cash equivalents at beginning of period"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": {
     "auth_ref": [
      "r91",
      "r573"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect",
        "totalLabel": "Net (decrease) increase in cash and cash equivalents"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashFlowSupplementalDisclosuresTextBlock": {
     "auth_ref": [
      "r105"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.",
        "label": "Cash Flow, Supplemental Disclosures [Text Block]",
        "terseLabel": "Non-cash Financing Activities"
       }
      }
     },
     "localname": "CashFlowSupplementalDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivities"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ClassOfStockDomain": {
     "auth_ref": [
      "r109",
      "r111",
      "r157",
      "r158",
      "r159",
      "r162",
      "r164",
      "r174",
      "r175",
      "r176",
      "r220",
      "r572"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.",
        "label": "Class of Stock [Domain]",
        "terseLabel": "Class of Stock"
       }
      }
     },
     "localname": "ClassOfStockDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/Cover",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ClassOfStockLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Class of Stock [Line Items]",
        "terseLabel": "Class of Stock [Line Items]"
       }
      }
     },
     "localname": "ClassOfStockLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commitments and Contingencies Disclosure [Abstract]",
        "terseLabel": "Commitments And Contingencies Disclosure [Abstract]"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": {
     "auth_ref": [
      "r292",
      "r293",
      "r294",
      "r295"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for commitments and contingencies.",
        "label": "Commitments and Contingencies Disclosure [Text Block]",
        "terseLabel": "Commitment and Contingencies"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingencies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommonClassAMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Classification of common stock representing ownership interest in a corporation.",
        "label": "Common Class A [Member]",
        "terseLabel": "Common Class A [Member]"
       }
      }
     },
     "localname": "CommonClassAMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonClassBMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Classification of common stock that has different rights than Common Class A, representing ownership interest in a corporation.",
        "label": "Common Class B [Member]",
        "terseLabel": "Common Class B [Member]"
       }
      }
     },
     "localname": "CommonClassBMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockDividendsPerShareCashPaid": {
     "auth_ref": [
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate dividends paid during the period for each share of common stock outstanding.",
        "label": "Common Stock, Dividends, Per Share, Cash Paid",
        "terseLabel": "Dividends paid (in dollars per share)",
        "verboseLabel": "Distributions paid, per share"
       }
      }
     },
     "localname": "CommonStockDividendsPerShareCashPaid",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockDividendsPerShareDeclared": {
     "auth_ref": [
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate dividends declared during the period for each share of common stock outstanding.",
        "label": "Common Stock, Dividends, Per Share, Declared",
        "positiveLabel": "Cash dividends declared per share of common stock (in dollars per share)",
        "terseLabel": "Cash dividends declared per share of common stock (in dollars per share)"
       }
      }
     },
     "localname": "CommonStockDividendsPerShareDeclared",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockMember": {
     "auth_ref": [
      "r133",
      "r134"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Stock that is subordinate to all other stock of the issuer.",
        "label": "Common Stock [Member]",
        "terseLabel": "Common Stock [Member]"
       }
      }
     },
     "localname": "CommonStockMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockParOrStatedValuePerShare": {
     "auth_ref": [
      "r20"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Face amount or stated value per share of common stock.",
        "label": "Common Stock, Par or Stated Value Per Share",
        "terseLabel": "Common stock, par value"
       }
      }
     },
     "localname": "CommonStockParOrStatedValuePerShare",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockSharesAuthorized": {
     "auth_ref": [
      "r20"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.",
        "label": "Common Stock, Shares Authorized",
        "terseLabel": "Common stock, shares authorized"
       }
      }
     },
     "localname": "CommonStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesIssued": {
     "auth_ref": [
      "r20"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.",
        "label": "Common Stock, Shares, Issued",
        "terseLabel": "Common stock, shares issued"
       }
      }
     },
     "localname": "CommonStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesOutstanding": {
     "auth_ref": [
      "r20",
      "r308"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.",
        "label": "Common Stock, Shares, Outstanding",
        "terseLabel": "Common stock, shares outstanding"
       }
      }
     },
     "localname": "CommonStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockValue": {
     "auth_ref": [
      "r20"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 17.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "label": "Common Stock, Value, Issued",
        "terseLabel": "Common stock, value"
       }
      }
     },
     "localname": "CommonStockValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CommonStockVotingRights": {
     "auth_ref": [
      "r309"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of voting rights of common stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.",
        "label": "Common Stock, Voting Rights",
        "terseLabel": "Class B common stock voting rights"
       }
      }
     },
     "localname": "CommonStockVotingRights",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CompensationAndRetirementDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Benefits [Abstract]"
       }
      }
     },
     "localname": "CompensationAndRetirementDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CompensationRelatedCostsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Compensation Related Costs [Abstract]"
       }
      }
     },
     "localname": "CompensationRelatedCostsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CompensationRelatedCostsPolicyTextBlock": {
     "auth_ref": [
      "r106",
      "r450"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for salaries, bonuses, incentive awards, postretirement and postemployment benefits granted to employees, including equity-based arrangements; discloses methodologies for measurement, and the bases for recognizing related assets and liabilities and recognizing and reporting compensation expense.",
        "label": "Compensation Related Costs, Policy [Policy Text Block]",
        "terseLabel": "Share Based Compensation"
       }
      }
     },
     "localname": "CompensationRelatedCostsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ComponentsOfDeferredTaxAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of Deferred Tax Assets [Abstract]",
        "terseLabel": "Deferred tax assets:"
       }
      }
     },
     "localname": "ComponentsOfDeferredTaxAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Components of Deferred Tax Liabilities [Abstract]",
        "terseLabel": "Deferred tax liabilities:"
       }
      }
     },
     "localname": "ComponentsOfDeferredTaxLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComprehensiveIncomeMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The change in equity (net assets) of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income [Member]",
        "terseLabel": "Accumulated Comprehensive Income (Loss) [Member]"
       }
      }
     },
     "localname": "ComprehensiveIncomeMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTax": {
     "auth_ref": [
      "r56",
      "r58",
      "r59",
      "r65",
      "r677",
      "r696"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
        "totalLabel": "Comprehensive income"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTaxAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]",
        "terseLabel": "Statements of Comprehensive Income"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTaxAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComprehensiveIncomePolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for comprehensive income.",
        "label": "Comprehensive Income, Policy [Policy Text Block]",
        "terseLabel": "Comprehensive Income"
       }
      }
     },
     "localname": "ComprehensiveIncomePolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConsolidationPolicyTextBlock": {
     "auth_ref": [
      "r107",
      "r558"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
        "label": "Consolidation, Policy [Policy Text Block]",
        "terseLabel": "Principles of Consolidation"
       }
      }
     },
     "localname": "ConsolidationPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityCurrent": {
     "auth_ref": [
      "r319",
      "r320",
      "r339"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 7.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.",
        "label": "Contract with Customer, Liability, Current",
        "terseLabel": "Deferred income"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractWithCustomerSalesChannelAxis": {
     "auth_ref": [
      "r338",
      "r347"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by sales channel for delivery of good or service in contract with customer.",
        "label": "Contract with Customer, Sales Channel [Axis]",
        "terseLabel": "Contract with Customer, Sales Channel"
       }
      }
     },
     "localname": "ContractWithCustomerSalesChannelAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ContractWithCustomerSalesChannelDomain": {
     "auth_ref": [
      "r338",
      "r347"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sales channel for delivery of good or service in contract with customer. Includes, but is not limited to, directly to consumer and through intermediary.",
        "label": "Contract with Customer, Sales Channel [Domain]",
        "terseLabel": "Contract with Customer, Sales Channel"
       }
      }
     },
     "localname": "ContractWithCustomerSalesChannelDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ContractualObligationDueAfterFifthYear": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "ContractualObligationDueAfterFifthYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractualObligationDueInFifthYear": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "ContractualObligationDueInFifthYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractualObligationDueInFourthYear": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "ContractualObligationDueInFourthYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractualObligationDueInNextTwelveMonths": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, Year One",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "ContractualObligationDueInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractualObligationDueInSecondYear": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "ContractualObligationDueInSecondYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractualObligationDueInThirdYear": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contractual obligation to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Contractual Obligation, to be Paid, Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "ContractualObligationDueInThirdYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CommitmentAndContingenciesSummaryOfMinimumPaymentsRelatedToAgreementsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostOfGoodsAndServicesSold": {
     "auth_ref": [
      "r72",
      "r647"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 6.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.",
        "label": "Cost of Goods and Services Sold",
        "terseLabel": "Direct advertising expenses (exclusive of depreciation and amortization)",
        "verboseLabel": "Direct advertising expenses"
       }
      }
     },
     "localname": "CostOfGoodsAndServicesSold",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostsAndExpenses": {
     "auth_ref": [
      "r70"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 5.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total costs of sales and operating expenses for the period.",
        "label": "Costs and Expenses",
        "totalLabel": "Total operating expenses"
       }
      }
     },
     "localname": "CostsAndExpenses",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostsAndExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Costs and Expenses [Abstract]",
        "terseLabel": "Operating expenses (income)",
        "verboseLabel": "Operating expenses (income)"
       }
      }
     },
     "localname": "CostsAndExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CreditFacilityAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Axis]",
        "terseLabel": "Credit Facility"
       }
      }
     },
     "localname": "CreditFacilityAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CreditFacilityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of credit facility. Credit facilities provide capital to borrowers without the need to structure a loan for each borrowing.",
        "label": "Credit Facility [Domain]",
        "terseLabel": "Credit Facility"
       }
      }
     },
     "localname": "CreditFacilityDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CreditLossFinancialInstrumentPolicyTextBlock": {
     "auth_ref": [
      "r229",
      "r230",
      "r231",
      "r233",
      "r234",
      "r237",
      "r239",
      "r240",
      "r241",
      "r242",
      "r244",
      "r245",
      "r246",
      "r247",
      "r248",
      "r249",
      "r251"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for credit loss on financial instrument measured at amortized cost basis, net investment in lease, off-balance sheet credit exposure, and available-for-sale debt security. Includes, but is not limited to, methodology used to estimate allowance for credit loss, how writeoff of uncollectible amount is recognized, and determination of past due status and nonaccrual status.",
        "label": "Credit Loss, Financial Instrument [Policy Text Block]",
        "verboseLabel": "Credit Losses"
       }
      }
     },
     "localname": "CreditLossFinancialInstrumentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CurrentFederalTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r513",
      "r526"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current Federal Tax Expense (Benefit)",
        "terseLabel": "U.S. federal, Current"
       }
      }
     },
     "localname": "CurrentFederalTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentForeignTaxExpenseBenefit": {
     "auth_ref": [
      "r120",
      "r513"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current Foreign Tax Expense (Benefit)",
        "terseLabel": "Foreign, Current"
       }
      }
     },
     "localname": "CurrentForeignTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r513",
      "r526",
      "r528"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
        "label": "Current Income Tax Expense (Benefit)",
        "totalLabel": "Total Current"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CurrentStateAndLocalTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r513",
      "r526"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_CurrentIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Current State and Local Tax Expense (Benefit)",
        "terseLabel": "State and local, Current"
       }
      }
     },
     "localname": "CurrentStateAndLocalTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Disclosure [Abstract]"
       }
      }
     },
     "localname": "DebtDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentAxis": {
     "auth_ref": [
      "r13",
      "r14",
      "r15",
      "r671",
      "r673",
      "r687"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.",
        "label": "Debt Instrument [Axis]",
        "terseLabel": "Debt Instrument"
       }
      }
     },
     "localname": "DebtInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentBasisSpreadOnVariableRate1": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage points added to the reference rate to compute the variable rate on the debt instrument.",
        "label": "Debt Instrument, Basis Spread on Variable Rate",
        "terseLabel": "Adjusted Rate"
       }
      }
     },
     "localname": "DebtInstrumentBasisSpreadOnVariableRate1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentCarryingAmount": {
     "auth_ref": [
      "r15",
      "r300",
      "r673",
      "r687"
     ],
     "calculation": {
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.",
        "label": "Long-term Debt, Gross",
        "positiveTerseLabel": "Carrying amount of company's long term debt",
        "terseLabel": "Debt",
        "verboseLabel": "Debt instrument outstanding amount"
       }
      }
     },
     "localname": "DebtInstrumentCarryingAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/FairValueOfFinancialInstrumentsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentDescription": {
     "auth_ref": [
      "r13",
      "r15",
      "r309",
      "r671",
      "r673",
      "r682",
      "r687"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total.",
        "label": "Debt Instrument, Description",
        "terseLabel": "Debt instrument description"
       }
      }
     },
     "localname": "DebtInstrumentDescription",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentFaceAmount": {
     "auth_ref": [
      "r584",
      "r586"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "definitionGuidance": "Aggregate principal amount of debt issued",
        "documentation": "Face (par) amount of debt instrument at time of issuance.",
        "label": "Debt Instrument, Face Amount",
        "positiveVerboseLabel": "Aggregate principal amount of debt issued",
        "terseLabel": "Debt Instrument, Face Amount",
        "verboseLabel": "Gross amount of company's long term debt"
       }
      }
     },
     "localname": "DebtInstrumentFaceAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/FairValueOfFinancialInstrumentsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentFairValue": {
     "auth_ref": [
      "r571"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.",
        "label": "Debt Instrument, Fair Value Disclosure",
        "terseLabel": "Estimated fair value of Long-term debt (including current maturities)"
       }
      }
     },
     "localname": "DebtInstrumentFairValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/FairValueOfFinancialInstrumentsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentInterestRateStatedPercentage": {
     "auth_ref": [
      "r42"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.",
        "label": "Debt Instrument, Interest Rate, Stated Percentage",
        "positiveLabel": "Debt Instrument, Interest Rate, Stated Percentage",
        "terseLabel": "Debt Instrument, Interest Rate, Stated Percentage",
        "verboseLabel": "Interest rate on senior notes"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateStatedPercentage",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Debt Instrument [Line Items]",
        "terseLabel": "Debt Instrument [Line Items]",
        "verboseLabel": "Debt Instrument [Line Items]"
       }
      }
     },
     "localname": "DebtInstrumentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentMaturityDate": {
     "auth_ref": [
      "r43",
      "r569"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.",
        "label": "Debt Instrument, Maturity Date",
        "terseLabel": "Debt instrument maturity date"
       }
      }
     },
     "localname": "DebtInstrumentMaturityDate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DebtInstrumentNameDomain": {
     "auth_ref": [
      "r44"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.",
        "label": "Debt Instrument, Name [Domain]",
        "terseLabel": "Debt Instrument, Name"
       }
      }
     },
     "localname": "DebtInstrumentNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentRedemptionDescription": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of debt redemption features under terms of the debt agreement.",
        "label": "Debt Instrument, Redemption, Description",
        "terseLabel": "Redemption, description"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionDescription",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPeriodAxis": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information about timing of debt redemption features under terms of the debt agreement.",
        "label": "Debt Instrument, Redemption, Period [Axis]",
        "terseLabel": "Debt Instrument, Redemption, Period"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriodAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPeriodDomain": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period as defined under terms of the debt agreement for debt redemption features.",
        "label": "Debt Instrument, Redemption, Period [Domain]",
        "terseLabel": "Debt Instrument, Redemption, Period"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriodDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPeriodEndDate": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "End date of debt instrument redemption period, in CCYY-MM-DD format.",
        "label": "Debt Instrument, Redemption Period, End Date",
        "verboseLabel": "Debt instrument repurchase expiry date"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriodEndDate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPeriodOneMember": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period one representing most current period of debt redemption features under terms of the debt agreement.",
        "label": "Debt Instrument, Redemption, Period One [Member]",
        "verboseLabel": "Prior to February 15, 2023 [Member]"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriodOneMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPeriodTwoMember": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period two representing second most current period of debt redemption features under terms of the debt agreement.",
        "label": "Debt Instrument, Redemption, Period Two [Member]",
        "terseLabel": "Prior to February 1, 2021 [Member]"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPeriodTwoMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPricePercentage": {
     "auth_ref": [
      "r683"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.",
        "label": "Debt Instrument, Redemption Price, Percentage",
        "verboseLabel": "Redeemed percentage of aggregate principal amount"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPricePercentage",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of principal amount of debt redeemed.",
        "label": "Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed",
        "terseLabel": "Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed"
       }
      }
     },
     "localname": "DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentRepurchaseAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value amount of debt instrument that was repurchased.",
        "label": "Debt Instrument, Repurchase Amount",
        "verboseLabel": "Debt instrument repurchased under the program"
       }
      }
     },
     "localname": "DebtInstrumentRepurchaseAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentTable": {
     "auth_ref": [
      "r44",
      "r116",
      "r309",
      "r312",
      "r313",
      "r314",
      "r583",
      "r584",
      "r586",
      "r684"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to long-term debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Schedule of Long-term Debt Instruments [Table]",
        "terseLabel": "Debt Instrument [Table]"
       }
      }
     },
     "localname": "DebtInstrumentTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contractual obligation to pay money on demand or on fixed or determinable dates.",
        "label": "Debt [Member]",
        "terseLabel": "Debt [Member]"
       }
      }
     },
     "localname": "DebtMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible": {
     "auth_ref": [
      "r495"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.",
        "label": "Decrease in Unrecognized Tax Benefits is Reasonably Possible",
        "terseLabel": "Expect to decrease in unrecognized tax benefits in next twelve months"
       }
      }
     },
     "localname": "DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain": {
     "auth_ref": [
      "r354",
      "r355"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred compensation that is not equivalent to a defined benefit pension plan or a defined benefit other postretirement benefit plan. Includes, but is not limited to, employment contracts with one or more selected officers or key employees. Excludes equity-based compensation plans, defined benefit pension plans and defined benefit other postretirement benefit plans.",
        "label": "Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain]",
        "terseLabel": "Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation"
       }
      }
     },
     "localname": "DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DeferredCompensationArrangementWithIndividualContributionsByEmployer": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.",
        "label": "Deferred Compensation Arrangement with Individual, Contributions by Employer",
        "terseLabel": "Employer's contribution"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualContributionsByEmployer",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis": {
     "auth_ref": [
      "r354",
      "r355"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of deferred compensation that is not equivalent to a defined benefit pension plan or a defined benefit other postretirement benefit plan. Includes, but is not limited to, employment contracts with one or more selected officers or key employees. Excludes equity-based compensation plans, defined benefit pension plans and defined benefit other postretirement benefit plans.",
        "label": "Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]",
        "terseLabel": "Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]",
        "terseLabel": "Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1": {
     "auth_ref": [
      "r356",
      "r446"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Deferred Compensation Arrangement with Individual, Requisite Service Period",
        "terseLabel": "Minimum years of experience to attain the benefit of deferred compensation plan"
       }
      }
     },
     "localname": "DeferredCompensationArrangementWithIndividualRequisiteServicePeriod1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_DeferredFederalIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r514",
      "r526"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Federal Income Tax Expense (Benefit)",
        "terseLabel": "U.S. federal, Deferred"
       }
      }
     },
     "localname": "DeferredFederalIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredFinanceCostsCurrentNet": {
     "auth_ref": [
      "r49",
      "r585"
     ],
     "calculation": {
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredFinanceCostsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "label": "Debt Issuance Costs, Current, Net",
        "negatedLabel": "Deferred financing costs, Less current maturities",
        "terseLabel": "Current deferred financing costs"
       }
      }
     },
     "localname": "DeferredFinanceCostsCurrentNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredFinanceCostsNet": {
     "auth_ref": [
      "r33",
      "r585"
     ],
     "calculation": {
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_LongTermDebt",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "label": "Debt Issuance Costs, Net",
        "totalLabel": "Deferred financing costs"
       }
      }
     },
     "localname": "DeferredFinanceCostsNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredFinanceCostsNoncurrentNet": {
     "auth_ref": [
      "r33",
      "r585"
     ],
     "calculation": {
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredFinanceCostsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.",
        "label": "Debt Issuance Costs, Noncurrent, Net",
        "terseLabel": "Noncurrent deferred financing costs",
        "verboseLabel": "Deferred financing costs, excluding current maturities"
       }
      }
     },
     "localname": "DeferredFinanceCostsNoncurrentNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredForeignIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r514",
      "r526"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Foreign Income Tax Expense (Benefit)",
        "terseLabel": "Foreign, Deferred"
       }
      }
     },
     "localname": "DeferredForeignIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r96",
      "r114",
      "r514",
      "r526",
      "r527",
      "r528"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Income Tax Expense (Benefit)",
        "terseLabel": "Deferred income tax (benefit) expense",
        "totalLabel": "Total, Deferred"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilities": {
     "auth_ref": [
      "r16",
      "r17",
      "r504",
      "r672",
      "r686"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 10.0,
       "parentTag": "us-gaap_DeferredTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.",
        "label": "Deferred Tax Liabilities, Gross",
        "negatedTotalLabel": "Gross deferred tax liabilities"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilitiesNet": {
     "auth_ref": [
      "r489",
      "r490"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 11.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.",
        "label": "Deferred Income Tax Liabilities, Net",
        "terseLabel": "Deferred income tax liabilities"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilitiesNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredProfitSharingMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "An arrangement whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a share in the profits, as defined in the agreement, of the entity or portion thereof. Employer contributions may be discretionary or may be based on a fixed formula related to profits, compensation, or other factors. It is a form of incentive compensation to employees in addition to their regular salary and bonuses.",
        "label": "Deferred Profit Sharing [Member]",
        "terseLabel": "Deferred Profit Sharing [Member]"
       }
      }
     },
     "localname": "DeferredProfitSharingMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r514",
      "r526"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_DeferredIncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred State and Local Income Tax Expense (Benefit)",
        "terseLabel": "State and local, Deferred"
       }
      }
     },
     "localname": "DeferredStateAndLocalIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsCharitableContributionCarryforwards": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 8.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.",
        "label": "Deferred Tax Assets, Charitable Contribution Carryforwards",
        "terseLabel": "Charitable contributions carry forward"
       }
      }
     },
     "localname": "DeferredTaxAssetsCharitableContributionCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGross": {
     "auth_ref": [
      "r505"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_DeferredTaxAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Gross",
        "totalLabel": "Gross deferred tax assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsInvestmentInSubsidiaries": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 9.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the entity's investment in its wholly-owned subsidiaries.",
        "label": "Deferred Tax Assets, Investment in Subsidiaries",
        "terseLabel": "Investment in partnerships"
       }
      }
     },
     "localname": "DeferredTaxAssetsInvestmentInSubsidiaries",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsNet": {
     "auth_ref": [
      "r507"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_DeferredTaxLiabilities",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Net of Valuation Allowance",
        "totalLabel": "Net deferred tax assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
        "label": "Deferred Tax Assets, Operating Loss Carryforwards",
        "terseLabel": "Net operating loss carry forwards"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsTaxCreditCarryforwards": {
     "auth_ref": [
      "r510",
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 7.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.",
        "label": "Deferred Tax Assets, Tax Credit Carryforwards",
        "terseLabel": "Tax credit carry forwards"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxCreditCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_DeferredTaxAssetsGross",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts.",
        "label": "Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts",
        "terseLabel": "Allowance for doubtful accounts"
       }
      }
     },
     "localname": "DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r506"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_DeferredTaxAssetsNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.",
        "label": "Deferred Tax Assets, Valuation Allowance",
        "negatedLabel": "Less: valuation allowance",
        "verboseLabel": "Valuation allowance for deferred tax assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilities": {
     "auth_ref": [
      "r490",
      "r507"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.",
        "label": "Deferred Tax Liabilities, Net",
        "negatedTotalLabel": "Net deferred tax liabilities"
       }
      }
     },
     "localname": "DeferredTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 11.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.",
        "label": "Deferred Tax Liabilities, Intangible Assets",
        "negatedLabel": "Intangibles"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment": {
     "auth_ref": [
      "r511",
      "r512"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 12.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.",
        "label": "Deferred Tax Liabilities, Property, Plant and Equipment",
        "negatedLabel": "Property, plant and equipment"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesUndistributedForeignEarnings": {
     "auth_ref": [
      "r511"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail": {
       "order": 13.0,
       "parentTag": "us-gaap_DeferredIncomeTaxLiabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from undistributed earnings of subsidiary and other recognized entity not within country of domicile. Includes, but is not limited to, other basis differences.",
        "label": "Deferred Tax Liabilities, Undistributed Foreign Earnings",
        "negatedLabel": "Undistributed earnings of foreign subsidiaries",
        "terseLabel": "Deferred tax liabilities foreign withholding taxes"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesUndistributedForeignEarnings",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesComponentsOfDeferredTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationAmortizationAndAccretionNet": {
     "auth_ref": [
      "r96"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 9.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      },
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "label": "Depreciation, Amortization and Accretion, Net",
        "terseLabel": "Depreciation and amortization",
        "verboseLabel": "Depreciation and amortization"
       }
      }
     },
     "localname": "DepreciationAmortizationAndAccretionNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationAndAmortizationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Depreciation, Depletion and Amortization [Abstract]"
       }
      }
     },
     "localname": "DepreciationAndAmortizationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disaggregation of Revenue [Abstract]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Disaggregation of Revenue [Line Items]",
        "terseLabel": "Disaggregation Of Revenue [Line Items]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTable": {
     "auth_ref": [
      "r338",
      "r341",
      "r342",
      "r343",
      "r344",
      "r345",
      "r346",
      "r347"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table]",
        "terseLabel": "Disaggregation Of Revenue [Table]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTableTextBlock": {
     "auth_ref": [
      "r338"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table Text Block]",
        "terseLabel": "Disaggregation Revenue"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": {
     "auth_ref": [
      "r483"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for share-based payment arrangement.",
        "label": "Share-based Payment Arrangement [Text Block]",
        "terseLabel": "Stock-Based Compensation"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensation"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock": {
     "auth_ref": [
      "r1",
      "r283"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.",
        "label": "Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]",
        "terseLabel": "Divestiture of Assets"
       }
      }
     },
     "localname": "DisposalGroupsIncludingDiscontinuedOperationsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssets"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DividendsAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information about distribution of earnings to shareholders including, but not limited to, cash, property or capital stock.",
        "label": "Dividends [Axis]",
        "terseLabel": "Dividends"
       }
      }
     },
     "localname": "DividendsAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DividendsCash": {
     "auth_ref": [
      "r315",
      "r681"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.",
        "label": "Dividends, Cash",
        "terseLabel": "Dividends declared"
       }
      }
     },
     "localname": "DividendsCash",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsCommonStock": {
     "auth_ref": [
      "r315",
      "r681"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of paid and unpaid common stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).",
        "label": "Dividends, Common Stock",
        "negatedLabel": "Dividends/distributions to common shareholders"
       }
      }
     },
     "localname": "DividendsCommonStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Distributions of earnings to shareholders including but not limited to cash, property or capital stock.",
        "label": "Dividends [Domain]",
        "terseLabel": "Dividends"
       }
      }
     },
     "localname": "DividendsDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DividendsPreferredStock": {
     "auth_ref": [
      "r315",
      "r681"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).",
        "label": "Dividends, Preferred Stock",
        "negatedLabel": "Dividends"
       }
      }
     },
     "localname": "DividendsPreferredStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DividendsPreferredStockCash": {
     "auth_ref": [
      "r315",
      "r681"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 16.0,
       "parentTag": "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash.",
        "label": "Dividends, Preferred Stock, Cash",
        "terseLabel": "Preferred stock dividends",
        "verboseLabel": "Dividends paid"
       }
      }
     },
     "localname": "DividendsPreferredStockCash",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DomesticCountryMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Designated tax department of the government that is entitled to levy and collect income taxes from the entity in its country of domicile.",
        "label": "Domestic Tax Authority [Member]",
        "terseLabel": "US [Member]"
       }
      }
     },
     "localname": "DomesticCountryMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DueFromEmployees": {
     "auth_ref": [
      "r121",
      "r607",
      "r609",
      "r694"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For an unclassified balance sheet, amounts due from an Entity employee, not to include stockholders or officers.",
        "label": "Due from Employees",
        "terseLabel": "Receivables from employees and executive officers"
       }
      }
     },
     "localname": "DueFromEmployees",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EarliestTaxYearMember": {
     "auth_ref": [
      "r496"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Earliest identified tax year.",
        "label": "Earliest Tax Year [Member]",
        "terseLabel": "Earliest Tax Year [Member]"
       }
      }
     },
     "localname": "EarliestTaxYearMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EarningsPerShareAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Earnings Per Share [Abstract]",
        "terseLabel": "Earnings per share:"
       }
      }
     },
     "localname": "EarningsPerShareAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EarningsPerShareBasic": {
     "auth_ref": [
      "r66",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r154",
      "r157",
      "r162",
      "r163",
      "r164",
      "r168",
      "r169",
      "r678",
      "r697"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.",
        "label": "Earnings Per Share, Basic",
        "terseLabel": "Basic earnings per share",
        "verboseLabel": "Net income per common share basic"
       }
      }
     },
     "localname": "EarningsPerShareBasic",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_EarningsPerShareDiluted": {
     "auth_ref": [
      "r66",
      "r143",
      "r144",
      "r145",
      "r146",
      "r147",
      "r157",
      "r162",
      "r163",
      "r164",
      "r168",
      "r169",
      "r678",
      "r697"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.",
        "label": "Earnings Per Share, Diluted",
        "terseLabel": "Diluted earnings per share",
        "verboseLabel": "Net income per common share diluted"
       }
      }
     },
     "localname": "EarningsPerShareDiluted",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_EarningsPerSharePolicyTextBlock": {
     "auth_ref": [
      "r107",
      "r165",
      "r166"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.",
        "label": "Earnings Per Share, Policy [Policy Text Block]",
        "terseLabel": "Earnings Per Share"
       }
      }
     },
     "localname": "EarningsPerSharePolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EarningsPerShareTextBlock": {
     "auth_ref": [
      "r165",
      "r166",
      "r167",
      "r170"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for earnings per share.",
        "label": "Earnings Per Share [Text Block]",
        "terseLabel": "Earnings Per Share"
       }
      }
     },
     "localname": "EarningsPerShareTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/EarningsPerShare"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations": {
     "auth_ref": [
      "r573"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 43.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations",
        "terseLabel": "Effect of exchange rate changes in cash and cash equivalents"
       }
      }
     },
     "localname": "EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r492",
      "r530"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "terseLabel": "Income tax rate"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EmployeeRelatedLiabilitiesCurrent": {
     "auth_ref": [
      "r40"
     ],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Employee-related Liabilities, Current",
        "terseLabel": "Payroll"
       }
      }
     },
     "localname": "EmployeeRelatedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized": {
     "auth_ref": [
      "r468"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost not yet recognized for nonvested award under share-based payment arrangement.",
        "label": "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount",
        "terseLabel": "Total unrecognized compensation cost related to nonvested awards"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": {
     "auth_ref": [
      "r468"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition",
        "terseLabel": "Weighted average number of years over which compensation cost related to nonvested awards is expected to be recognized"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_EquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity [Abstract]"
       }
      }
     },
     "localname": "EquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_EquityComponentDomain": {
     "auth_ref": [
      "r133",
      "r134",
      "r135",
      "r139",
      "r148",
      "r150",
      "r173",
      "r224",
      "r308",
      "r315",
      "r474",
      "r475",
      "r476",
      "r519",
      "r520",
      "r574",
      "r575",
      "r576",
      "r577",
      "r578",
      "r579",
      "r708",
      "r709",
      "r710"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.",
        "label": "Equity Component [Domain]",
        "terseLabel": "Equity Component"
       }
      }
     },
     "localname": "EquityComponentDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityInterestIssuedOrIssuableByTypeAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of equity interests that are issued or issuable in a business combination.",
        "label": "Equity Interest Type [Axis]",
        "terseLabel": "Equity Interest Type"
       }
      }
     },
     "localname": "EquityInterestIssuedOrIssuableByTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EquityInterestIssuedOrIssuableTypeDomain": {
     "auth_ref": [
      "r550"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of equity interest issued or issuable to acquire an entity in a business combination.",
        "label": "Equity Interest Issued or Issuable, Type [Domain]",
        "terseLabel": "Equity Interest Issued or Issuable, Type"
       }
      }
     },
     "localname": "EquityInterestIssuedOrIssuableTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Disclosures [Abstract]"
       }
      }
     },
     "localname": "FairValueDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueDisclosuresTextBlock": {
     "auth_ref": [
      "r570"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.",        "label": "Fair Value Disclosures [Text Block]",
        "terseLabel": "Fair Value of Financial Instruments"
       }
      }
     },
     "localname": "FairValueDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/FairValueOfFinancialInstruments"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueMeasurementPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities.",
        "label": "Fair Value Measurement, Policy [Policy Text Block]",
        "terseLabel": "Fair Value Measurements"
       }
      }
     },
     "localname": "FairValueMeasurementPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations": {
     "auth_ref": [
      "r113",
      "r491"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 7.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.",
        "label": "Federal Income Tax Expense (Benefit), Continuing Operations",
        "terseLabel": "U.S. federal, Total"
       }
      }
     },
     "localname": "FederalIncomeTaxExpenseBenefitContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseInterestExpense": {
     "auth_ref": [
      "r590",
      "r595",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of interest expense on finance lease liability.",
        "label": "Finance Lease, Interest Expense",
        "terseLabel": "Interest expenses"
       }
      }
     },
     "localname": "FinanceLeaseInterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiability": {
     "auth_ref": [
      "r589",
      "r602"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease.",
        "label": "Finance Lease, Liability",
        "terseLabel": "Finance lease, liability"
       }
      }
     },
     "localname": "FinanceLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityCurrent": {
     "auth_ref": [
      "r589"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 8.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.",
        "label": "Finance Lease, Liability, Current",
        "terseLabel": "Current financing lease liabilities"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseLiabilityNoncurrent": {
     "auth_ref": [
      "r589"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 14.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent.",
        "label": "Finance Lease, Liability, Noncurrent",
        "terseLabel": "Financing lease liabilities"
       }
      }
     },
     "localname": "FinanceLeaseLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeasePrincipalPayments": {
     "auth_ref": [
      "r591",
      "r598"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 42.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow for principal payment on finance lease.",
        "label": "Finance Lease, Principal Payments",
        "negatedLabel": "Principal payments on financing leases",
        "terseLabel": "Principal payments on financing leases"
       }
      }
     },
     "localname": "FinanceLeasePrincipalPayments",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseRightOfUseAsset": {
     "auth_ref": [
      "r588"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 33.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after accumulated amortization, of right-of-use asset from finance lease.",
        "label": "Finance Lease, Right-of-Use Asset, after Accumulated Amortization",
        "terseLabel": "Financing lease right of use assets"
       }
      }
     },
     "localname": "FinanceLeaseRightOfUseAsset",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseRightOfUseAssetAmortization": {
     "auth_ref": [
      "r590",
      "r595",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization expense attributable to right-of-use asset from finance lease.",
        "label": "Finance Lease, Right-of-Use Asset, Amortization",
        "terseLabel": "Amortization expense"
       }
      }
     },
     "localname": "FinanceLeaseRightOfUseAssetAmortization",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent": {
     "auth_ref": [
      "r601",
      "r603"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average discount rate for finance lease calculated at point in time.",
        "label": "Finance Lease, Weighted Average Discount Rate, Percent",
        "terseLabel": "Weighted-average discount rate"
       }
      }
     },
     "localname": "FinanceLeaseWeightedAverageDiscountRatePercent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1": {
     "auth_ref": [
      "r600",
      "r603"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Finance Lease, Weighted Average Remaining Lease Term",
        "terseLabel": "Weighted-average remaining lease term"
       }
      }
     },
     "localname": "FinanceLeaseWeightedAverageRemainingLeaseTerm1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FinancialInstrumentAxis": {
     "auth_ref": [
      "r218",
      "r219",
      "r234",
      "r236",
      "r237",
      "r238",
      "r243",
      "r250",
      "r251",
      "r252",
      "r253",
      "r616",
      "r617",
      "r618",
      "r619",
      "r620",
      "r621",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r628",
      "r629",
      "r630",
      "r631",
      "r632",
      "r633",
      "r634",
      "r635",
      "r636",
      "r637",
      "r638",
      "r639",
      "r640",
      "r641",
      "r642",
      "r643",
      "r644",
      "r645"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of financial instrument.",
        "label": "Financial Instrument [Axis]",
        "terseLabel": "Financial Instrument"
       }
      }
     },
     "localname": "FinancialInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Finite-Lived Intangible Asset, Useful Life",
        "terseLabel": "Estimated useful lives of Intangible assets",
        "verboseLabel": "Estimated Life (Years)"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": {
     "auth_ref": [
      "r272"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Accumulated Amortization",
        "terseLabel": "Accumulated Amortization"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive": {
     "auth_ref": [],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": {
     "auth_ref": [
      "r274"
     ],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year One",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": {
     "auth_ref": [
      "r274"
     ],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": {
     "auth_ref": [
      "r274"
     ],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": {
     "auth_ref": [
      "r274"
     ],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": {
     "auth_ref": [
      "r274"
     ],
     "calculation": {
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis": {
     "auth_ref": [
      "r267",
      "r269",
      "r272",
      "r275",
      "r648",
      "r655"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by major type or class of finite-lived intangible assets.",
        "label": "Finite-Lived Intangible Assets by Major Class [Axis]",
        "terseLabel": "Finite-Lived Intangible Assets by Major Class"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsByMajorClassAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsGross": {
     "auth_ref": [
      "r272",
      "r655"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Gross",
        "terseLabel": "Gross Carrying Amount"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Finite-Lived Intangible Assets [Line Items]",
        "terseLabel": "Finite Lived Intangible Assets [Line Items]"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain": {
     "auth_ref": [
      "r267",
      "r271"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The major class of finite-lived intangible asset (for example, patents, trademarks, copyrights, etc.) A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.",
        "label": "Finite-Lived Intangible Assets, Major Class Name [Domain]",
        "terseLabel": "Finite-Lived Intangible Assets, Major Class Name"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsMajorClassNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsNet": {
     "auth_ref": [
      "r272",
      "r648"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 31.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      },
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Net",
        "terseLabel": "Intangible assets, net",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfEstimatedAmortizationExpenseDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ForeignCountryMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Designated tax departments of governments entitled to levy and collect income taxes from the entity outside the entity's country of domicile.",
        "label": "Foreign Tax Authority [Member]",
        "terseLabel": "Foreign Tax Authority"
       }
      }
     },
     "localname": "ForeignCountryMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock": {
     "auth_ref": [
      "r107",
      "r581"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.",
        "label": "Foreign Currency Transactions and Translations Policy [Policy Text Block]",
        "terseLabel": "Foreign Currency Translation"
       }
      }
     },
     "localname": "ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations": {
     "auth_ref": [
      "r119"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 9.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.",
        "label": "Foreign Income Tax Expense (Benefit), Continuing Operations",
        "terseLabel": "Foreign, Total"
       }
      }
     },
     "localname": "ForeignIncomeTaxExpenseBenefitContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainLossOnDispositionOfAssets1": {
     "auth_ref": [
      "r96"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 10.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": -1.0
      },
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.",
        "label": "Gain (Loss) on Disposition of Assets",
        "negatedLabel": "Gain on disposition of assets",
        "negatedTerseLabel": "(Gain) loss on disposition of assets and investments",
        "verboseLabel": "(Gain) loss on disposition of assets"
       }
      }
     },
     "localname": "GainLossOnDispositionOfAssets1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail",
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GainsLossesOnExtinguishmentOfDebt": {
     "auth_ref": [
      "r96",
      "r302",
      "r303"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 13.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      },
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.",
        "label": "Gain (Loss) on Extinguishment of Debt",
        "negatedLabel": "Loss on extinguishment of debt",
        "negatedTerseLabel": "Loss on debt extinguishment"
       }
      }
     },
     "localname": "GainsLossesOnExtinguishmentOfDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r73"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 7.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.",
        "label": "General and Administrative Expense",
        "terseLabel": "General and administrative expenses (exclusive of depreciation and amortization)",
        "verboseLabel": "General and administrative expenses"
       }
      }
     },
     "localname": "GeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralAndAdministrativeExpenseMember": {
     "auth_ref": [
      "r67"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing general and administrative expense.",
        "label": "General and Administrative Expense [Member]",
        "terseLabel": "General and Administrative Expenses [Member]"
       }
      }
     },
     "localname": "GeneralAndAdministrativeExpenseMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Goodwill": {
     "auth_ref": [
      "r255",
      "r257",
      "r669"
     ],
     "calculation": {
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet",
       "weight": 1.0
      },
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 30.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill",
        "terseLabel": "Goodwill",
        "verboseLabel": "Portion of acquired intangible assets assigned to goodwill"
       }
      }
     },
     "localname": "Goodwill",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillAcquiredDuringPeriod": {
     "auth_ref": [
      "r259"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.",
        "label": "Goodwill, Acquired During Period",
        "terseLabel": "Goodwill acquired during the year"
       }
      }
     },
     "localname": "GoodwillAcquiredDuringPeriod",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill And Intangible Assets Disclosure [Abstract]"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": {
     "auth_ref": [
      "r276"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for goodwill and intangible assets.",
        "label": "Goodwill and Intangible Assets Disclosure [Text Block]",
        "terseLabel": "Goodwill and Other Intangible Assets"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock": {
     "auth_ref": [
      "r107",
      "r263",
      "r270"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.",
        "label": "Goodwill and Intangible Assets, Policy [Policy Text Block]",
        "terseLabel": "Goodwill and Intangible Assets"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillGross": {
     "auth_ref": [
      "r258",
      "r262"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Gross",
        "periodEndLabel": "Goodwill, ending balance",
        "periodStartLabel": "Goodwill, beginning balance",
        "terseLabel": "Goodwill gross carrying amount"
       }
      }
     },
     "localname": "GoodwillGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillImpairmentLoss": {
     "auth_ref": [
      "r96",
      "r256",
      "r260",
      "r264"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Impairment Loss",
        "terseLabel": "Impairment losses"
       }
      }
     },
     "localname": "GoodwillImpairmentLoss",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Goodwill [Line Items]",
        "terseLabel": "Goodwill [Line Items]"
       }
      }
     },
     "localname": "GoodwillLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GoodwillPurchaseAccountingAdjustments": {
     "auth_ref": [
      "r261",
      "r538"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Purchase Accounting Adjustments",
        "terseLabel": "Purchase price adjustments and other"
       }
      }
     },
     "localname": "GoodwillPurchaseAccountingAdjustments",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock": {
     "auth_ref": [
      "r107",
      "r277",
      "r282"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets.",
        "label": "Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]",
        "terseLabel": "Impairment of Long-Lived Assets"
       }
      }
     },
     "localname": "ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic": {
     "auth_ref": [
      "r118",
      "r529"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.",
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Domestic",
        "terseLabel": "U.S."
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesUSAndForeignComponentsOfEarningsBeforeIncomeTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest": {
     "auth_ref": [
      "r63",
      "r193",
      "r196",
      "r199",
      "r202",
      "r205",
      "r668",
      "r675",
      "r680",
      "r698"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 3.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.",
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest",
        "totalLabel": "Income before income tax expense"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/IncomeTaxesUSAndForeignComponentsOfEarningsBeforeIncomeTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign": {
     "auth_ref": [
      "r118",
      "r529"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.",
        "label": "Income (Loss) from Continuing Operations before Income Taxes, Foreign",
        "terseLabel": "Foreign"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesUSAndForeignComponentsOfEarningsBeforeIncomeTaxesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeStatementAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Statement [Abstract]"
       }
      }
     },
     "localname": "IncomeStatementAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationAxis": {
     "auth_ref": [
      "r281"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by location in the income statement.",
        "label": "Income Statement Location [Axis]",
        "terseLabel": "Income Statement Location"
       }
      }
     },
     "localname": "IncomeStatementLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Location in the income statement.",
        "label": "Income Statement Location [Domain]",
        "terseLabel": "Income Statement Location"
       }
      }
     },
     "localname": "IncomeStatementLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxAuthorityAxis": {
     "auth_ref": [
      "r496"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by tax jurisdiction.",
        "label": "Income Tax Authority [Axis]",
        "terseLabel": "Income Tax Authority"
       }
      }
     },
     "localname": "IncomeTaxAuthorityAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxAuthorityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
        "label": "Income Tax Authority [Domain]",
        "terseLabel": "Income Tax Authority"
       }
      }
     },
     "localname": "IncomeTaxAuthorityDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxAuthorityNameAxis": {
     "auth_ref": [
      "r496"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of taxing authority.",
        "label": "Income Tax Authority, Name [Axis]",
        "terseLabel": "Income Tax Authority, Name"
       }
      }
     },
     "localname": "IncomeTaxAuthorityNameAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxAuthorityNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Named agency, division or body that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
        "label": "Income Tax Authority, Name [Domain]",
        "terseLabel": "Income Tax Authority, Name"
       }
      }
     },
     "localname": "IncomeTaxAuthorityNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Disclosure [Abstract]"
       }
      }
     },
     "localname": "IncomeTaxDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureTextBlock": {
     "auth_ref": [
      "r493",
      "r502",
      "r509",
      "r524",
      "r531",
      "r533",
      "r534",
      "r536"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.",
        "label": "Income Tax Disclosure [Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxes"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r114",
      "r149",
      "r150",
      "r192",
      "r491",
      "r525",
      "r532",
      "r699"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      },
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Income Tax Expense (Benefit)",
        "terseLabel": "Income tax expense (benefit)",
        "totalLabel": "Income tax expense",
        "verboseLabel": "Income tax expense"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxPolicyTextBlock": {
     "auth_ref": [
      "r60",
      "r107",
      "r487",
      "r488",
      "r502",
      "r503",
      "r508",
      "r515",
      "r721"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
        "label": "Income Tax, Policy [Policy Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.",
        "label": "Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount",
        "terseLabel": "Valuation allowance"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate": {
     "auth_ref": [
      "r486",
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.",
        "label": "Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount",
        "terseLabel": "Rate change"
       }
      }
     },
     "localname": "IncomeTaxReconciliationChangeInEnactedTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail",
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationDeductionsDividends": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for dividend.",
        "label": "Effective Income Tax Rate Reconciliation, Deduction, Dividends, Amount",
        "terseLabel": "Tax adjustment related dividend paid deduction"
       }
      }
     },
     "localname": "IncomeTaxReconciliationDeductionsDividends",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "terseLabel": "Income tax expense at U.S. federal statutory rate"
       }
      }
     },
     "localname": "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationNondeductibleExpense": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.",
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount",
        "terseLabel": "Book expenses not deductible for tax purposes"
       }
      }
     },
     "localname": "IncomeTaxReconciliationNondeductibleExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to nondeductible expense for award under share-based payment arrangement. Includes, but is not limited to, expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.",
        "label": "Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount",
        "terseLabel": "Stock-based compensation"
       }
      }
     },
     "localname": "IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherAdjustments": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
        "terseLabel": "Tax adjustment related to REIT"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherAdjustments",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherReconcilingItems": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to tax exempt income, equity in earnings (loss) of an unconsolidated subsidiary, minority noncontrolling interest income (loss), tax holiday, disposition of a business, disposition of an asset, repatriation of foreign earnings, repatriation of foreign earnings jobs creation act of 2004, increase (decrease) in enacted tax rate, prior year income taxes, increase (decrease) in deferred tax asset valuation allowance, and other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount",
        "terseLabel": "Other differences, net"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherReconcilingItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes": {
     "auth_ref": [
      "r492"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
        "terseLabel": "State and local income taxes, net of federal income tax benefit"
       }
      }
     },
     "localname": "IncomeTaxReconciliationStateAndLocalIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateReconciliationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaid": {
     "auth_ref": [
      "r93",
      "r100"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.",
        "label": "Income Taxes Paid",
        "terseLabel": "Cash paid for foreign, state and federal income taxes"
       }
      }
     },
     "localname": "IncomeTaxesPaid",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsPayableTrade": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services.",
        "label": "Increase (Decrease) in Accounts Payable, Trade",
        "terseLabel": "Trade accounts payable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsPayableTrade",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedLiabilities": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 14.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.",
        "label": "Increase (Decrease) in Accrued Liabilities",
        "terseLabel": "Accrued expenses"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInNotesReceivables": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 20.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note.",
        "label": "Increase (Decrease) in Notes Receivables",
        "negatedLabel": "(Increase) decrease in notes receivable",
        "negatedTerseLabel": "(Increase) decrease in notes receivable"
       }
      }
     },
     "localname": "IncreaseDecreaseInNotesReceivables",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Operating Assets [Abstract]",
        "verboseLabel": "Decrease (increase) in:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Operating Capital [Abstract]",
        "terseLabel": "Changes in operating assets and liabilities:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Operating Liabilities [Abstract]",
        "verboseLabel": "(Decrease) increase in:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingLiabilitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingAssets": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating assets classified as other.",
        "label": "Increase (Decrease) in Other Operating Assets",
        "negatedLabel": "Other assets"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingLiabilities": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 16.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating liabilities classified as other.",
        "label": "Increase (Decrease) in Other Operating Liabilities",
        "terseLabel": "Other liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInPrepaidExpense": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.",
        "label": "Increase (Decrease) in Prepaid Expense",
        "negatedLabel": "Prepaid expenses"
       }
      }
     },
     "localname": "IncreaseDecreaseInPrepaidExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInReceivables": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.",
        "label": "Increase (Decrease) in Receivables",
        "negatedLabel": "Receivables"
       }
      }
     },
     "localname": "IncreaseDecreaseInReceivables",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IntangibleAssetsNetIncludingGoodwill": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.",
        "label": "Intangible Assets, Net (Including Goodwill)",
        "terseLabel": "Intangibles and goodwill, net"
       }
      }
     },
     "localname": "IntangibleAssetsNetIncludingGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpense": {
     "auth_ref": [
      "r61",
      "r191",
      "r582",
      "r585",
      "r679"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 15.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.",
        "label": "Interest Expense",
        "terseLabel": "Interest expense"
       }
      }
     },
     "localname": "InterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestIncomeExpenseNonoperatingNet": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net amount of nonoperating interest income (expense).",
        "label": "Interest Income (Expense), Nonoperating, Net",
        "negatedLabel": "Interest expense (income), net"
       }
      }
     },
     "localname": "InterestIncomeExpenseNonoperatingNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPaidNet": {
     "auth_ref": [
      "r88",
      "r92",
      "r100"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "terseLabel": "Cash paid for interest"
       }
      }
     },
     "localname": "InterestPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPayableCurrent": {
     "auth_ref": [
      "r8",
      "r9",
      "r40"
     ],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Interest Payable, Current",
        "terseLabel": "Interest"
       }
      }
     },
     "localname": "InterestPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InternalRevenueServiceIRSMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Designated tax department of the United States of America government entitled to levy and collect income taxes from the entity.",
        "label": "Internal Revenue Service (IRS) [Member]",
        "terseLabel": "Internal Revenue Service IRS [Member]"
       }
      }
     },
     "localname": "InternalRevenueServiceIRSMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InvestmentIncomeInterest": {
     "auth_ref": [
      "r74",
      "r190"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 14.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.",
        "label": "Investment Income, Interest",
        "negatedLabel": "Interest income"
       }
      }
     },
     "localname": "InvestmentIncomeInterest",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LandMember": {
     "auth_ref": [
      "r341"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Part of earth's surface not covered by water.",
        "label": "Land [Member]",
        "terseLabel": "Land [Member]"
       }
      }
     },
     "localname": "LandMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LatestTaxYearMember": {
     "auth_ref": [
      "r496"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Latest identified tax year.",
        "label": "Latest Tax Year [Member]",
        "terseLabel": "Latest Tax Year [Member]"
       }
      }
     },
     "localname": "LatestTaxYearMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LeasesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Leases [Abstract]"
       }
      }
     },
     "localname": "LeasesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_LeasesOfLesseeDisclosureTextBlock": {
     "auth_ref": [
      "r587"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.",
        "label": "Leases of Lessee Disclosure [Text Block]",
        "terseLabel": "Leases"
       }
      }
     },
     "localname": "LeasesOfLesseeDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Leases"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LesseeLeaseDescriptionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Lessee, Lease, Description [Line Items]",
        "terseLabel": "Lessee Lease Description [Line Items]"
       }
      }
     },
     "localname": "LesseeLeaseDescriptionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LesseeLeaseDescriptionTable": {
     "auth_ref": [
      "r594"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about lessee's leases.",
        "label": "Lessee, Lease, Description [Table]",
        "terseLabel": "Lessee Lease Description [Table]"
       }
      }
     },
     "localname": "LesseeLeaseDescriptionTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LesseeLeasesPolicyTextBlock": {
     "auth_ref": [
      "r593"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for leasing arrangement entered into by lessee.",
        "label": "Lessee, Leases [Policy Text Block]",
        "terseLabel": "Lease Liabilities"
       }
      }
     },
     "localname": "LesseeLeasesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock": {
     "auth_ref": [
      "r602"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.",
        "label": "Lessee, Operating Lease, Liability, Maturity [Table Text Block]",
        "terseLabel": "Summary of Maturities of Operating Lease Liabilities"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityMaturityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease.",
        "label": "Lessee, Operating Lease, Liability, to be Paid",
        "totalLabel": "Total undiscounted operating lease payments"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 7.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, after Year Five",
        "terseLabel": "Thereafter"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 1.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year One",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 5.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Five",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFive",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 4.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Four",
        "terseLabel": "2025"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearFour",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 3.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Three",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearThree",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 2.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Year Two",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsDueYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear": {
     "auth_ref": [
      "r602"
     ],
     "calculation": {
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.",
        "label": "Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount": {
     "auth_ref": [
      "r602"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.",
        "label": "Lessee, Operating Lease, Liability, Undiscounted Excess Amount",
        "negatedLabel": "Less: Imputed interest"
       }
      }
     },
     "localname": "LesseeOperatingLeaseLiabilityUndiscountedExcessAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LetterOfCreditMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A document typically issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction (for example, wiring funds to a foreign exporter if and when specified merchandise is accepted pursuant to the terms of the letter of credit).",
        "label": "Letter of Credit [Member]",
        "terseLabel": "Letter of Credit [Member]"
       }
      }
     },
     "localname": "LetterOfCreditMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LettersOfCreditOutstandingAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.",
        "label": "Letters of Credit Outstanding, Amount",
        "terseLabel": "Letter of credit outstanding balance",
        "verboseLabel": "Letters of credit with bank"
       }
      }
     },
     "localname": "LettersOfCreditOutstandingAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_Liabilities": {
     "auth_ref": [
      "r39",
      "r111",
      "r198",
      "r220",
      "r557",
      "r562",
      "r563",
      "r572"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "label": "Liabilities",
        "totalLabel": "Total liabilities"
       }
      }
     },
     "localname": "Liabilities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "auth_ref": [
      "r27",
      "r111",
      "r220",
      "r572",
      "r674",
      "r692"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
        "label": "Liabilities and Equity",
        "totalLabel": "Total liabilities and stockholders' equity"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities and Equity [Abstract]",
        "terseLabel": "LIABILITIES AND STOCKHOLDERS' EQUITY"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesCurrent": {
     "auth_ref": [
      "r41",
      "r111",
      "r220",
      "r557",
      "r562",
      "r563",
      "r572"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 2.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.",
        "label": "Liabilities, Current",
        "totalLabel": "Total current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities, Current [Abstract]",
        "terseLabel": "Current liabilities:"
       }
      }
     },
     "localname": "LiabilitiesCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesOtherThanLongtermDebtNoncurrent": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregated carrying amounts of obligations as of the balance sheet date, excluding long-term debt, incurred as part of the normal operations that are expected to be paid after one year or beyond the normal operating cycle, if longer. Alternate captions include Total Deferred Credits and Other Liabilities.",
        "label": "Liabilities, Other than Long-term Debt, Noncurrent",
        "terseLabel": "Other noncurrent liabilities"
       }
      }
     },
     "localname": "LiabilitiesOtherThanLongtermDebtNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest": {
     "auth_ref": [
      "r176"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).",
        "label": "Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest",
        "terseLabel": "Ownership interest in limited liability company"
       }
      }
     },
     "localname": "LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LineOfCredit": {
     "auth_ref": [
      "r15",
      "r673",
      "r687"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",        "label": "Long-term Line of Credit",
        "terseLabel": "Outstanding revolving credit facility"
       }
      }
     },
     "localname": "LineOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity": {
     "auth_ref": [
      "r36"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Maximum Borrowing Capacity",
        "terseLabel": "Maximum borrowing limit of incremental loan facility"
       }
      }
     },
     "localname": "LineOfCreditFacilityMaximumBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": {
     "auth_ref": [
      "r36"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
        "label": "Line of Credit Facility, Remaining Borrowing Capacity",
        "terseLabel": "Remaining borrowing capacity under revolving credit facility"
       }
      }
     },
     "localname": "LineOfCreditFacilityRemainingBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LondonInterbankOfferedRateLIBORMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest rate at which a bank borrows funds from other banks in the London interbank market.",
        "label": "London Interbank Offered Rate (LIBOR) [Member]",
        "terseLabel": "LIBO Rate [Member]"
       }
      }
     },
     "localname": "LondonInterbankOfferedRateLIBORMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LongTermDebt": {
     "auth_ref": [
      "r15",
      "r301",
      "r673",
      "r689"
     ],
     "calculation": {
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt",
        "totalLabel": "Debt, net of deferred financing costs"
       }
      }
     },
     "localname": "LongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtCurrent": {
     "auth_ref": [
      "r38"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Current Maturities",
        "negatedLabel": "Debt, net of deferred financing costs, Less current maturities",
        "terseLabel": "Current maturities of long-term debt, net of deferred financing costs",
        "verboseLabel": "Current maturities of long-term debt"
       }
      }
     },
     "localname": "LongTermDebtCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive": {
     "auth_ref": [
      "r123",
      "r296"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, after Year Five",
        "terseLabel": "Later years"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": {
     "auth_ref": [
      "r123",
      "r296"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year One",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": {
     "auth_ref": [
      "r123",
      "r296"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Four",
        "terseLabel": "2024"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
     "auth_ref": [
      "r123",
      "r296"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Three",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
     "auth_ref": [
      "r123",
      "r296"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Two",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtNoncurrent": {
     "auth_ref": [
      "r44"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 9.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Excluding Current Maturities",
        "terseLabel": "Long-term debt",
        "verboseLabel": "Long-term debt, net of deferred financing costs"
       }
      }
     },
     "localname": "LongTermDebtNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtTextBlock": {
     "auth_ref": [
      "r304"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for long-term debt.",
        "label": "Long-term Debt [Text Block]",
        "terseLabel": "Long-term Debt"
       }
      }
     },
     "localname": "LongTermDebtTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebt"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LongtermDebtTypeAxis": {
     "auth_ref": [
      "r44"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of long-term debt.",
        "label": "Long-term Debt, Type [Axis]",
        "terseLabel": "Long-term Debt, Type"
       }
      }
     },
     "localname": "LongtermDebtTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongtermDebtTypeDomain": {
     "auth_ref": [
      "r44",
      "r297"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Long-term Debt, Type [Domain]",
        "terseLabel": "Long-term Debt, Type"
       }
      }
     },
     "localname": "LongtermDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtDetail",
      "http://lamar.com/role/LongTermDebtLongTermDebtParentheticalDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "auth_ref": [
      "r91"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 23.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "label": "Net Cash Provided by (Used in) Financing Activities",
        "totalLabel": "Net cash (used in) provided by financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]",
        "terseLabel": "Cash flows from financing activities:"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "auth_ref": [
      "r91"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 17.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "label": "Net Cash Provided by (Used in) Investing Activities",
        "totalLabel": "Net cash used in investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]",
        "terseLabel": "Cash flows from investing activities:"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "auth_ref": [
      "r91",
      "r94",
      "r97"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "terseLabel": "Net cash provided by (used in) operating activities",
        "totalLabel": "Net cash provided by operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Cash flows from operating activities:"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetIncomeLoss": {
     "auth_ref": [
      "r0",
      "r55",
      "r57",
      "r64",
      "r97",
      "r111",
      "r138",
      "r143",
      "r144",
      "r145",
      "r146",
      "r149",
      "r150",
      "r160",
      "r193",
      "r196",
      "r199",
      "r202",
      "r205",
      "r220",
      "r572",
      "r676",
      "r695"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 18.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
        "label": "Net Income (Loss) Attributable to Parent",
        "positiveTerseLabel": "Net income",
        "terseLabel": "Net income",
        "totalLabel": "Net income",
        "verboseLabel": "Net Income (Loss)"
       }
      }
     },
     "localname": "NetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic": {
     "auth_ref": [
      "r143",
      "r144",
      "r145",
      "r146",
      "r154",
      "r155",
      "r161",
      "r164",
      "r193",
      "r196",
      "r199",
      "r202",
      "r205"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.",
        "label": "Net Income (Loss) Available to Common Stockholders, Basic",
        "totalLabel": "Net income applicable to common stock",
        "verboseLabel": "Net income applicable to common stock"
       }
      }
     },
     "localname": "NetIncomeLossAvailableToCommonStockholdersBasic",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting Standards Update and Change in Accounting Principle [Abstract]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock": {
     "auth_ref": [
      "r136",
      "r137",
      "r140",
      "r141",
      "r151",
      "r152",
      "r153",
      "r225",
      "r226",
      "r348",
      "r349",
      "r350",
      "r351",
      "r477",
      "r521",
      "r522",
      "r523",
      "r652",
      "r653",
      "r654",
      "r712",
      "r713",
      "r714",
      "r715",
      "r717"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.",
        "label": "Accounting Standards Update and Change in Accounting Principle [Text Block]",
        "terseLabel": "New Accounting Pronouncements"
       }
      }
     },
     "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/NewAccountingPronouncements"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NonUsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Countries excluding the United States of America (US).",
        "label": "Non-US [Member]",
        "terseLabel": "Foreign Countries [Member]"
       }
      }
     },
     "localname": "NonUsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1": {
     "auth_ref": [
      "r101",
      "r102",
      "r103"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.",
        "label": "Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued",
        "terseLabel": "Issuance of shares related to acquisition"
       }
      }
     },
     "localname": "NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssued1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1": {
     "auth_ref": [
      "r101",
      "r102",
      "r103"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The value of an asset or business acquired in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.",
        "label": "Noncash or Part Noncash Acquisition, Value of Assets Acquired",
        "terseLabel": "Non-cash amounts"
       }
      }
     },
     "localname": "NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsParentheticalDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NoncompeteAgreementsMember": {
     "auth_ref": [
      "r546"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agreement in which one party agrees not to pursue a similar trade in competition with another party.",
        "label": "Noncompete Agreements [Member]",
        "terseLabel": "Non-competition Agreements [Member]"
       }
      }
     },
     "localname": "NoncompeteAgreementsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_NoncurrentAssets": {
     "auth_ref": [
      "r209"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.",
        "label": "Long-Lived Assets",
        "verboseLabel": "Net carrying value of long lived assets"
       }
      }
     },
     "localname": "NoncurrentAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NonoperatingIncomeExpense": {
     "auth_ref": [
      "r75"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 12.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).",
        "label": "Nonoperating Income (Expense)",
        "negatedTotalLabel": "Non-operating (income) expenses"
       }
      }
     },
     "localname": "NonoperatingIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NonoperatingIncomeExpenseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nonoperating Income (Expense) [Abstract]",
        "terseLabel": "Other expense (income)"
       }
      }
     },
     "localname": "NonoperatingIncomeExpenseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NumberOfReportingUnits": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.",
        "label": "Number of Reporting Units",
        "terseLabel": "Number of reporting units"
       }
      }
     },
     "localname": "NumberOfReportingUnits",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_NumberOfStatesInWhichEntityOperates": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of states the entity operates in as of the balance sheet date.",
        "label": "Number of States in which Entity Operates",
        "terseLabel": "Number of states in which the company operates"
       }
      }
     },
     "localname": "NumberOfStatesInWhichEntityOperates",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "integerItemType"
    },
    "us-gaap_OperatingIncomeLoss": {
     "auth_ref": [
      "r193",
      "r196",
      "r199",
      "r202",
      "r205"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 4.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net result for the period of deducting operating expenses from operating revenues.",
        "label": "Operating Income (Loss)",
        "totalLabel": "Operating income"
       }
      }
     },
     "localname": "OperatingIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseCost": {
     "auth_ref": [
      "r596",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.",
        "label": "Operating Lease, Cost",
        "terseLabel": "Operating lease, cost"
       }
      }
     },
     "localname": "OperatingLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Lease Liabilities Payments Due [Abstract]"
       }
      }
     },
     "localname": "OperatingLeaseLiabilitiesPaymentsDueAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLeaseLiability": {
     "auth_ref": [
      "r589"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease.",
        "label": "Operating Lease, Liability",
        "terseLabel": "Total operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesSummaryOfMaturitiesOfOperatingLeaseLiabilitiesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityCurrent": {
     "auth_ref": [
      "r589"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 5.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.",
        "label": "Operating Lease, Liability, Current",
        "terseLabel": "Current operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseLiabilityNoncurrent": {
     "auth_ref": [
      "r589"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 10.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.",
        "label": "Operating Lease, Liability, Noncurrent",
        "terseLabel": "Operating lease liabilities"
       }
      }
     },
     "localname": "OperatingLeaseLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasePayments": {
     "auth_ref": [
      "r592",
      "r598"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.",
        "label": "Operating Lease, Payments",
        "terseLabel": "Operating lease, cash payments"
       }
      }
     },
     "localname": "OperatingLeasePayments",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseRightOfUseAsset": {
     "auth_ref": [
      "r588"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 29.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of lessee's right to use underlying asset under operating lease.",
        "label": "Operating Lease, Right-of-Use Asset",
        "terseLabel": "Operating lease right of use assets"
       }
      }
     },
     "localname": "OperatingLeaseRightOfUseAsset",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent": {
     "auth_ref": [
      "r601",
      "r603"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average discount rate for operating lease calculated at point in time.",
        "label": "Operating Lease, Weighted Average Discount Rate, Percent",
        "terseLabel": "Operating lease, weighted average discount rate"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageDiscountRatePercent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1": {
     "auth_ref": [
      "r600",
      "r603"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Operating Lease, Weighted Average Remaining Lease Term",
        "terseLabel": "Operating lease, weighted average remaining lease term"
       }
      }
     },
     "localname": "OperatingLeaseWeightedAverageRemainingLeaseTerm1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_OperatingLossCarryforwards": {
     "auth_ref": [
      "r510"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "label": "Operating Loss Carryforwards",
        "terseLabel": "Net operating loss carry forwards"
       }
      }
     },
     "localname": "OperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLossCarryforwardsValuationAllowance": {
     "auth_ref": [
      "r506"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.",
        "label": "Operating Loss Carryforwards, Valuation Allowance",
        "verboseLabel": "Valuation allowance for deferred tax assets"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherAccruedLiabilitiesCurrent": {
     "auth_ref": [
      "r7",
      "r8",
      "r9",
      "r40"
     ],
     "calculation": {
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail": {
       "order": 6.0,
       "parentTag": "us-gaap_AccruedLiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.",
        "label": "Other Accrued Liabilities, Current",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "OtherAccruedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesSummaryOfAccruedExpensesDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssetsCurrent": {
     "auth_ref": [
      "r49"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 25.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current assets classified as other.",
        "label": "Other Assets, Current",
        "terseLabel": "Other current assets"
       }
      }
     },
     "localname": "OtherAssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssetsNoncurrent": {
     "auth_ref": [
      "r33"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 32.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of noncurrent assets classified as other.",
        "label": "Other Assets, Noncurrent",
        "terseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent": {
     "auth_ref": [
      "r554",
      "r555",
      "r561"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 20.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.",
        "label": "Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent",
        "terseLabel": "Foreign currency translation adjustments",
        "verboseLabel": "Foreign currency translations"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax": {
     "auth_ref": [
      "r51"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 19.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.",
        "label": "Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax",
        "terseLabel": "Foreign currency translation adjustments",
        "verboseLabel": "Foreign currency translation"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Net of Tax [Abstract]",
        "terseLabel": "Other comprehensive income (loss)"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherCurrentAssetsMember": {
     "auth_ref": [
      "r566",
      "r568"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing other current assets.",
        "label": "Other Current Assets [Member]",
        "terseLabel": "Other Current Assets [Member]"
       }
      }
     },
     "localname": "OtherCurrentAssetsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherIncomeAndExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Income and Expenses [Abstract]"
       }
      }
     },
     "localname": "OtherIncomeAndExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherIntangibleAssetsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Intangible assets classified as other.",
        "label": "Other Intangible Assets [Member]",
        "terseLabel": "Other [Member]",
        "verboseLabel": "Other Intangibles [Member]"
       }
      }
     },
     "localname": "OtherIntangibleAssetsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherLiabilitiesCurrent": {
     "auth_ref": [
      "r6",
      "r7",
      "r40"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.",
        "label": "Other Liabilities, Current",
        "terseLabel": "Other current liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLiabilitiesNoncurrent": {
     "auth_ref": [
      "r45"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 13.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.",
        "label": "Other Liabilities, Noncurrent",
        "terseLabel": "Other liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherNonoperatingExpense": {
     "auth_ref": [
      "r76"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense related to nonoperating activities, classified as other.",
        "label": "Other Nonoperating Expense",
        "terseLabel": "Other expenses (income)"
       }
      }
     },
     "localname": "OtherNonoperatingExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PayablesAndAccrualsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Payables and Accruals [Abstract]"
       }
      }
     },
     "localname": "PayablesAndAccrualsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PaymentsForRepurchaseOfCommonStock": {
     "auth_ref": [
      "r85"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 25.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow to reacquire common stock during the period.",
        "label": "Payments for Repurchase of Common Stock",
        "negatedLabel": "Cash used for purchase of treasury stock"
       }
      }
     },
     "localname": "PaymentsForRepurchaseOfCommonStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDebtIssuanceCosts": {
     "auth_ref": [
      "r87"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 32.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.",
        "label": "Payments of Debt Issuance Costs",
        "negatedLabel": "Debt issuance costs"
       }
      }
     },
     "localname": "PaymentsOfDebtIssuanceCosts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDistributionsToAffiliates": {
     "auth_ref": [
      "r85"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 36.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The distributions of earnings to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.",
        "label": "Payments of Distributions to Affiliates",
        "negatedLabel": "Distributions to non-controlling interest"
       }
      }
     },
     "localname": "PaymentsOfDistributionsToAffiliates",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDividends": {
     "auth_ref": [
      "r85"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.",
        "label": "Payments of Dividends",
        "terseLabel": "Distributions paid"
       }
      }
     },
     "localname": "PaymentsOfDividends",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock": {
     "auth_ref": [
      "r85"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity.",
        "label": "Payments of Ordinary Dividends, Preferred Stock and Preference Stock",
        "terseLabel": "Distributions paid, preferred stockholders"
       }
      }
     },
     "localname": "PaymentsOfDividendsPreferredStockAndPreferenceStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfOrdinaryDividends": {
     "auth_ref": [
      "r85"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 37.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings.",
        "label": "Payments of Ordinary Dividends",
        "negatedLabel": "Dividends/distributions"
       }
      }
     },
     "localname": "PaymentsOfOrdinaryDividends",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireBusinessesGross": {
     "auth_ref": [
      "r80",
      "r549"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.",
        "label": "Payments to Acquire Businesses, Gross",
        "terseLabel": "Purchase price, cash"
       }
      }
     },
     "localname": "PaymentsToAcquireBusinessesGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired": {
     "auth_ref": [
      "r80"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 19.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.",
        "label": "Payments to Acquire Businesses, Net of Cash Acquired",
        "negatedLabel": "Acquisitions"
       }
      }
     },
     "localname": "PaymentsToAcquireBusinessesNetOfCashAcquired",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": {
     "auth_ref": [
      "r81"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 18.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "negatedLabel": "Capital expenditures"
       }
      }
     },
     "localname": "PaymentsToAcquirePropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": {
     "auth_ref": [
      "r381",
      "r383",
      "r389",
      "r406",
      "r408",
      "r409",
      "r410",
      "r411",
      "r412",
      "r424",
      "r426",
      "r427",
      "r428",
      "r440"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for retirement benefits.",
        "label": "Retirement Benefits [Text Block]",
        "terseLabel": "Benefit Plans"
       }
      }
     },
     "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlans"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PensionPlansDefinedBenefitMember": {
     "auth_ref": [
      "r357",
      "r359",
      "r360",
      "r361",
      "r362",
      "r363",
      "r364",
      "r365",
      "r366",
      "r367",
      "r368",
      "r369",
      "r370",
      "r371",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r378",
      "r379",
      "r380",
      "r381",
      "r382",
      "r384",
      "r385",
      "r386",
      "r387",
      "r388",
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r400",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r407",
      "r410",
      "r413",
      "r414",
      "r415",
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r428",
      "r429",
      "r435",
      "r436",
      "r437",
      "r438"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan designed to provide participant with pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes other postretirement benefits.",
        "label": "Pension Plan [Member]",
        "terseLabel": "Benefit Plans [Member]"
       }
      }
     },
     "localname": "PensionPlansDefinedBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PlanNameAxis": {
     "auth_ref": [
      "r444",
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by plan name for share-based payment arrangement.",
        "label": "Plan Name [Axis]",
        "terseLabel": "Plan Name"
       }
      }
     },
     "localname": "PlanNameAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PlanNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan name for share-based payment arrangement.",
        "label": "Plan Name [Domain]",
        "terseLabel": "Plan Name"
       }
      }
     },
     "localname": "PlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PreferredClassAMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Outstanding nonredeemable preferred class A stock or outstanding convertible preferred class A stock. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer.",
        "label": "Preferred Class A [Member]",
        "terseLabel": "Preferred Class A [Member]"
       }
      }
     },
     "localname": "PreferredClassAMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PreferredStockDividendRatePerDollarAmount": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount per share used to calculated dividend payments on preferred stock.",
        "label": "Preferred Stock, Dividend Rate, Per-Dollar-Amount",
        "terseLabel": "Dividends paid to preferred stock"
       }
      }
     },
     "localname": "PreferredStockDividendRatePerDollarAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockDividendsPerShareCashPaid": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate dividends paid during the period for each share of preferred stock outstanding.",
        "label": "Preferred Stock, Dividends, Per Share, Cash Paid",
        "terseLabel": "Distributions paid, preferred stockholders, per share",
        "verboseLabel": "Distributions paid, preferred stockholders, per share"
       }
      }
     },
     "localname": "PreferredStockDividendsPerShareCashPaid",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DividendsDistributionsAdditionalInformationDetail",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockDividendsPerShareDeclared": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate dividends declared during the period for each share of preferred stock outstanding.",
        "label": "Preferred Stock, Dividends Per Share, Declared",
        "terseLabel": "Distributions accrued, preferred stockholders, per share"
       }
      }
     },
     "localname": "PreferredStockDividendsPerShareDeclared",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockLiquidationPreference": {
     "auth_ref": [
      "r19",
      "r109",
      "r309",
      "r310"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.",
        "label": "Preferred Stock, Liquidation Preference Per Share",
        "terseLabel": "Amount entitled"
       }
      }
     },
     "localname": "PreferredStockLiquidationPreference",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockParOrStatedValuePerShare": {
     "auth_ref": [
      "r19"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.",
        "label": "Preferred Stock, Par or Stated Value Per Share",
        "terseLabel": "Preferred stock, par value"
       }
      }
     },
     "localname": "PreferredStockParOrStatedValuePerShare",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_PreferredStockSharesAuthorized": {
     "auth_ref": [
      "r19"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.",
        "label": "Preferred Stock, Shares Authorized",
        "terseLabel": "Preferred stock, shares authorized"
       }
      }
     },
     "localname": "PreferredStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PreferredStockSharesIssued": {
     "auth_ref": [
      "r19"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.",
        "label": "Preferred Stock, Shares Issued",
        "terseLabel": "Preferred stock, shares issued"
       }
      }
     },
     "localname": "PreferredStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PreferredStockSharesOutstanding": {
     "auth_ref": [
      "r19"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.",
        "label": "Preferred Stock, Shares Outstanding",
        "terseLabel": "Preferred stock, shares outstanding"
       }
      }
     },
     "localname": "PreferredStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_PreferredStockValue": {
     "auth_ref": [
      "r19"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 16.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "label": "Preferred Stock, Value, Issued",
        "terseLabel": "Preferred stock, value"
       }
      }
     },
     "localname": "PreferredStockValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PreferredStockVotingRights": {
     "auth_ref": [
      "r19",
      "r309"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of voting rights of nonredeemable preferred stock. Includes eligibility to vote and votes per share owned. Include also, if any, unusual voting rights.",
        "label": "Preferred Stock, Voting Rights",
        "terseLabel": "Preferred stock voting right"
       }
      }
     },
     "localname": "PreferredStockVotingRights",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PrivatePlacementMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A private placement is a direct offering of securities to a limited number of sophisticated investors such as insurance companies, pension funds, mezzanine funds, stock funds and trusts.",
        "label": "Private Placement [Member]",
        "terseLabel": "Private Placement [Member]"
       }
      }
     },
     "localname": "PrivatePlacementMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ProceedsFromAccountsReceivableSecuritization": {
     "auth_ref": [
      "r83"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 30.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.",
        "label": "Proceeds from Accounts Receivable Securitization",
        "terseLabel": "Proceeds received from accounts receivable securitization program",
        "verboseLabel": "Proceeds received from accounts receivable securitization program"
       }
      }
     },
     "localname": "ProceedsFromAccountsReceivableSecuritization",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromBankDebt": {
     "auth_ref": [
      "r83"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 29.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from bank borrowing during the year.",
        "label": "Proceeds from Bank Debt",
        "positiveLabel": "Proceeds received from term loans",
        "terseLabel": "Proceeds received from senior credit facility term loans",
        "verboseLabel": "Proceeds received from term A loans"
       }
      }
     },
     "localname": "ProceedsFromBankDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromContributionsFromParent": {
     "auth_ref": [
      "r84"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 39.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from parent as a source of financing that is recorded as additional paid in capital.",
        "label": "Proceeds from Contributions from Parent",
        "terseLabel": "Contributions from parent"
       }
      }
     },
     "localname": "ProceedsFromContributionsFromParent",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromDebtNetOfIssuanceCosts": {
     "auth_ref": [
      "r83"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.",
        "label": "Proceeds from Debt, Net of Issuance Costs",
        "terseLabel": "Net proceeds from the issuance of debt"
       }
      }
     },
     "localname": "ProceedsFromDebtNetOfIssuanceCosts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromDivestitureOfBusinesses": {
     "auth_ref": [
      "r77"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.",
        "label": "Proceeds from Divestiture of Businesses",
        "terseLabel": "Cash on sale of assets"
       }
      }
     },
     "localname": "ProceedsFromDivestitureOfBusinesses",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DivestitureOfAssetsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromInsuranceSettlementInvestingActivities": {
     "auth_ref": [
      "r79",
      "r90"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 21.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.",
        "label": "Proceeds from Insurance Settlement, Investing Activities",
        "terseLabel": "Proceeds received from property insurance claims"
       }
      }
     },
     "localname": "ProceedsFromInsuranceSettlementInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfCommonStock": {
     "auth_ref": [
      "r82"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 24.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from the additional capital contribution to the entity.",
        "label": "Proceeds from Issuance of Common Stock",
        "terseLabel": "Net proceeds from issuance of common stock"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfCommonStock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfDebt": {
     "auth_ref": [
      "r83"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 33.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.",
        "label": "Proceeds from Issuance of Debt",
        "terseLabel": "Proceeds received from note offering"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfLongTermDebt": {
     "auth_ref": [
      "r83"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 40.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.",
        "label": "Proceeds from Issuance of Long-term Debt",
        "terseLabel": "Borrowings on long term debt"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromLinesOfCredit": {
     "auth_ref": [
      "r83",
      "r117"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 26.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Proceeds from Lines of Credit",
        "terseLabel": "Proceeds received from revolving credit facility"
       }
      }
     },
     "localname": "ProceedsFromLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromLongTermLinesOfCredit": {
     "auth_ref": [
      "r83"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.",
        "label": "Proceeds from Long-term Lines of Credit",
        "terseLabel": "Proceeds received from revolving credit facility"
       }
      }
     },
     "localname": "ProceedsFromLongTermLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromRepaymentsOfRelatedPartyDebt": {
     "auth_ref": [
      "r122"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from long-term debt by a related party. Related parties, include, but are not limited to, affiliates, owners or officers and their immediate families, and pension trusts.",
        "label": "Proceeds from (Repayments of) Related Party Debt",
        "verboseLabel": "Intercompany loan (payments) proceeds"
       }
      }
     },
     "localname": "ProceedsFromRepaymentsOfRelatedPartyDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment": {
     "auth_ref": [
      "r78"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 22.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.",
        "label": "Proceeds from Sale of Property, Plant, and Equipment",
        "terseLabel": "Proceeds from disposition of assets and investments"
       }
      }
     },
     "localname": "ProceedsFromSaleOfPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProfitLoss": {
     "auth_ref": [
      "r0",
      "r55",
      "r57",
      "r89",
      "r111",
      "r138",
      "r149",
      "r150",
      "r193",
      "r196",
      "r199",
      "r202",
      "r205",
      "r220",
      "r554",
      "r559",
      "r560",
      "r564",
      "r565",
      "r572",
      "r680"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.",
        "label": "Net Income (Loss), Including Portion Attributable to Noncontrolling Interest",
        "terseLabel": "Net income"
       }
      }
     },
     "localname": "ProfitLoss",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, Plant and Equipment [Abstract]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentByTypeAxis": {
     "auth_ref": [
      "r32",
      "r280"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of long-lived, physical assets used to produce goods and services and not intended for resale.",
        "label": "Long-Lived Tangible Asset [Axis]",
        "terseLabel": "Property, Plant and Equipment, Type"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentByTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": {
     "auth_ref": [
      "r283",
      "r722",
      "r723",
      "r724"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.",
        "label": "Property, Plant and Equipment Disclosure [Text Block]",
        "terseLabel": "Property, Plant and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipment"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentGross": {
     "auth_ref": [
      "r31",
      "r278"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 27.0,
       "parentTag": "us-gaap_PropertyPlantAndEquipmentNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Gross",
        "terseLabel": "Property, plant and equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Property, Plant and Equipment [Line Items]",
        "terseLabel": "Depreciation and Amortization Expense [Line Items]",
        "verboseLabel": "Property, Plant and Equipment [Line Items]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentNet": {
     "auth_ref": [
      "r11",
      "r12",
      "r280",
      "r693"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 26.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Net",
        "terseLabel": "Net property, plant and equipment",
        "totalLabel": "Net property, plant and equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentNet",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": {
     "auth_ref": [
      "r30",
      "r107",
      "r280",
      "r722",
      "r723"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.",
        "label": "Property, Plant and Equipment, Policy [Policy Text Block]",
        "terseLabel": "Property, Plant and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTextBlock": {
     "auth_ref": [
      "r11",
      "r280"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table Text Block]",
        "terseLabel": "Summary of Major Categories of Property, Plant and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentTypeDomain": {
     "auth_ref": [
      "r11",
      "r278"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Listing of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.",
        "label": "Long-Lived Tangible Asset [Domain]",
        "terseLabel": "Property, Plant and Equipment, Type"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.",
        "label": "Property, Plant and Equipment, Useful Life",
        "terseLabel": "Property plant and equipment, Estimated life"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ProvisionForDoubtfulAccounts": {
     "auth_ref": [
      "r68",
      "r235"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense (reversal of expense) for expected credit loss on accounts receivable.",
        "label": "Accounts Receivable, Credit Loss Expense (Reversal)",
        "terseLabel": "Provision for doubtful accounts"
       }
      }
     },
     "localname": "ProvisionForDoubtfulAccounts",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_QuarterlyFinancialInformationDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Quarterly Financial Information Disclosure [Abstract]"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_QuarterlyFinancialInformationTextBlock": {
     "auth_ref": [
      "r172"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.",
        "label": "Quarterly Financial Information [Text Block]",
        "terseLabel": "Quarterly Financial Data (Unaudited)"
       }
      }
     },
     "localname": "QuarterlyFinancialInformationTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RatioOfIndebtednessToNetCapital1": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indebtedness divided by net capital.",
        "label": "Ratio of Indebtedness to Net Capital",
        "terseLabel": "Secured debt ratio",
        "verboseLabel": "Ratio of indebtedness to net capital one"
       }
      }
     },
     "localname": "RatioOfIndebtednessToNetCapital1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail",
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "pureItemType"
    },
    "us-gaap_RealEstateAccumulatedDepreciation": {
     "auth_ref": [
      "r729"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation",
        "negatedLabel": "Accumulated Depreciation",
        "periodEndLabel": "Balance at the end of the year",
        "periodStartLabel": "Balance at the beginning of the year"
       }
      }
     },
     "localname": "RealEstateAccumulatedDepreciation",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateAccumulatedDepreciationRealEstateSold": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of decrease to accumulated depreciation for real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold",
        "negatedLabel": "Assets sold or written-off"
       }
      }
     },
     "localname": "RealEstateAccumulatedDepreciationRealEstateSold",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements": {
     "auth_ref": [
      "r726"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Initial cost of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements",
        "terseLabel": "Initial Cost"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1": {
     "auth_ref": [
      "r732"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Useful life on which depreciation was computed for entities with a substantial portion of business acquiring and holding investment real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation",
        "terseLabel": "Useful Lives"
       }
      }
     },
     "localname": "RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_RealEstateCostOfRealEstateSold": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of real estate investments sold for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold",
        "negatedLabel": "Assets sold or written-off"
       }
      }
     },
     "localname": "RealEstateCostOfRealEstateSold",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateGrossAtCarryingValue": {
     "auth_ref": [
      "r728"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, before accumulated depreciation, of real estate investment by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. Excludes real estate not held as investment or interest.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross",
        "periodEndLabel": "Balance at the end of the year",
        "periodStartLabel": "Balance at the beginning of the year",
        "terseLabel": "Gross Carrying Amount"
       }
      }
     },
     "localname": "RealEstateGrossAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiScheduleOfRealEstateAndAccumulatedDepreciationDetail",
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateImprovements": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in real estate investments related to improvements for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Improvements",
        "terseLabel": "Capital expenditures on improvements/redevelopments of existing advertising displays"
       }
      }
     },
     "localname": "RealEstateImprovements",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateOtherAcquisitions": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in real estate investments from acquisitions other than through foreclosure for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Acquisition",
        "terseLabel": "Land acquisitions"
       }
      }
     },
     "localname": "RealEstateOtherAcquisitions",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RealEstateOtherAdditions": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of other additions excluding acquisition or improvement to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Addition",
        "terseLabel": "Capital expenditures other recurring"
       }
      }
     },
     "localname": "RealEstateOtherAdditions",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]",
        "terseLabel": "Gross real estate assets:"
       }
      }
     },
     "localname": "ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]",
        "terseLabel": "Accumulated depreciation:"
       }
      }
     },
     "localname": "ReconciliationOfRealEstateAccumulatedDepreciationRollForward",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyDomain": {
     "auth_ref": [
      "r407",
      "r606",
      "r607"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Related parties include affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Domain]",
        "terseLabel": "Related Party"
       }
      }
     },
     "localname": "RelatedPartyDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty": {
     "auth_ref": [
      "r606"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.",
        "label": "Related Party Transaction, Expenses from Transactions with Related Party",
        "terseLabel": "Aggregate amount paid on backup-recovery services"
       }
      }
     },
     "localname": "RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Related Party Transaction [Line Items]",
        "terseLabel": "Related Party Transaction [Line Items]"
       }
      }
     },
     "localname": "RelatedPartyTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Related Party Transactions [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsByRelatedPartyAxis": {
     "auth_ref": [
      "r407",
      "r606",
      "r610",
      "r656",
      "r657",
      "r658",
      "r659",
      "r660",
      "r661",
      "r662",
      "r663",
      "r664",
      "r665",
      "r666",
      "r667"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of related party. Related parties include, but not limited to, affiliates; other entities for which investments are accounted for by the equity method by the entity; trusts for benefit of employees; and principal owners, management, and members of immediate families. It also may include other parties with which the entity may control or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests.",
        "label": "Related Party [Axis]",
        "terseLabel": "Related Party"
       }
      }
     },
     "localname": "RelatedPartyTransactionsByRelatedPartyAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": {
     "auth_ref": [
      "r604",
      "r605",
      "r607",
      "r611",
      "r612"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Related Party Transactions Disclosure [Text Block]",
        "terseLabel": "Related Party Transactions"
       }
      }
     },
     "localname": "RelatedPartyTransactionsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactions"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RepaymentsOfAccountsReceivableSecuritization": {
     "auth_ref": [
      "r86"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 31.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Repayments of securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.",
        "label": "Repayments of Accounts Receivable Securitization",
        "negatedLabel": "Payments on accounts receivable securitization program",
        "negatedTerseLabel": "Payments on accounts receivable securitization program"
       }
      }
     },
     "localname": "RepaymentsOfAccountsReceivableSecuritization",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfBankDebt": {
     "auth_ref": [
      "r86"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 35.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow to settle a bank borrowing during the year.",
        "label": "Repayments of Bank Debt",
        "negatedLabel": "Payments on senior credit facility term loans"
       }
      }
     },
     "localname": "RepaymentsOfBankDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfLinesOfCredit": {
     "auth_ref": [
      "r86",
      "r117"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 27.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Repayments of Lines of Credit",
        "negatedLabel": "Payments on revolving credit facility",
        "negatedTerseLabel": "Payment on revolving credit facility"
       }
      }
     },
     "localname": "RepaymentsOfLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfLongTermDebt": {
     "auth_ref": [
      "r86"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 28.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
        "label": "Repayments of Long-term Debt",
        "negatedLabel": "Principal payments on long-term debt",
        "negatedTerseLabel": "Principal payments on long-term debt"
       }
      }
     },
     "localname": "RepaymentsOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfSecuredDebt": {
     "auth_ref": [
      "r86"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.",
        "label": "Repayments of Secured Debt",
        "negatedTerseLabel": "Payment on senior credit facility"
       }
      }
     },
     "localname": "RepaymentsOfSecuredDebt",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RestrictedStockMember": {
     "auth_ref": [
      "r165"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Stock including a provision that prohibits sale or substantive sale of an equity instrument for a specified period of time or until specified performance conditions are met.",
        "label": "Restricted Stock [Member]",
        "terseLabel": "Restricted Stock [Member]"
       }
      }
     },
     "localname": "RestrictedStockMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetainedEarningsAccumulatedDeficit": {
     "auth_ref": [
      "r23",
      "r315",
      "r478",
      "r691",
      "r712",
      "r717"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 20.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings (Accumulated Deficit)",
        "terseLabel": "Accumulated deficit"
       }
      }
     },
     "localname": "RetainedEarningsAccumulatedDeficit",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RetainedEarningsMember": {
     "auth_ref": [
      "r133",
      "r134",
      "r135",
      "r139",
      "r148",
      "r150",
      "r224",
      "r474",
      "r475",
      "r476",
      "r519",
      "r520",
      "r708",
      "r710"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings [Member]",
        "terseLabel": "Accumulated Deficit [Member]"
       }
      }
     },
     "localname": "RetainedEarningsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetirementPlanTypeAxis": {
     "auth_ref": [
      "r357",
      "r358",
      "r359",
      "r360",
      "r361",
      "r362",
      "r363",
      "r364",
      "r365",
      "r366",
      "r367",
      "r368",
      "r369",
      "r370",
      "r371",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r378",
      "r379",
      "r380",
      "r381",
      "r382",
      "r384",
      "r385",
      "r386",
      "r387",
      "r388",
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r400",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r407",
      "r410",
      "r413",
      "r414",
      "r415",
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r435",
      "r436",
      "r437",
      "r438"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of retirement benefit plan. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
        "label": "Retirement Plan Type [Axis]",
        "terseLabel": "Retirement Plan Type"
       }
      }
     },
     "localname": "RetirementPlanTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RetirementPlanTypeDomain": {
     "auth_ref": [
      "r357",
      "r358",
      "r359",
      "r360",
      "r361",
      "r362",
      "r363",
      "r364",
      "r365",
      "r366",
      "r367",
      "r368",
      "r369",
      "r370",
      "r371",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r378",
      "r379",
      "r380",
      "r381",
      "r382",
      "r384",
      "r385",
      "r386",
      "r387",
      "r388",
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r397",
      "r398",
      "r399",
      "r400",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r407",
      "r410",
      "r413",
      "r414",
      "r415",
      "r416",
      "r417",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r435",
      "r436",
      "r437",
      "r438"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of plan designed to provide participants with retirement benefits. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
        "label": "Retirement Plan Type [Domain]",
        "terseLabel": "Retirement Plan Type"
       }
      }
     },
     "localname": "RetirementPlanTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue from Contract with Customer [Abstract]"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax": {
     "auth_ref": [
      "r188",
      "r189",
      "r195",
      "r200",
      "r201",
      "r207",
      "r208",
      "r211",
      "r337",
      "r338",
      "r647"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited": {
       "order": 11.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.",
        "label": "Revenue from Contract with Customer, Including Assessed Tax",
        "terseLabel": "Net revenues",
        "verboseLabel": "Net revenues"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerIncludingAssessedTax",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail",
      "http://lamar.com/role/RevenuesDisaggregationRevenueDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerPolicyTextBlock": {
     "auth_ref": [
      "r108",
      "r329",
      "r330",
      "r331",
      "r332",
      "r333",
      "r334",
      "r335",
      "r336",
      "r353"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for revenue from contract with customer.",
        "label": "Revenue from Contract with Customer [Policy Text Block]",
        "terseLabel": "Revenue Recognition"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerTextBlock": {
     "auth_ref": [
      "r321",
      "r322",
      "r323",
      "r324",
      "r325",
      "r326",
      "r327",
      "r328",
      "r340",
      "r353"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.",
        "label": "Revenue from Contract with Customer [Text Block]",
        "terseLabel": "Revenues"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/Revenues"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevenueFromRelatedParties": {
     "auth_ref": [
      "r71",
      "r719"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.",
        "label": "Revenue from Related Parties",
        "terseLabel": "Advertising services aggregate amount"
       }
      }
     },
     "localname": "RevenueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_Revenues": {
     "auth_ref": [
      "r62",
      "r111",
      "r188",
      "r189",
      "r195",
      "r200",
      "r201",
      "r207",
      "r208",
      "r211",
      "r220",
      "r572",
      "r680"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
        "label": "Revenues",
        "terseLabel": "Revenue from external customers"
       }
      }
     },
     "localname": "Revenues",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Revenues from External Customers and Long-Lived Assets [Line Items]",
        "terseLabel": "Revenues from External Customers and Long-Lived Assets [Line Items]"
       }
      }
     },
     "localname": "RevenuesFromExternalCustomersAndLongLivedAssetsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevolvingCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.",
        "label": "Revolving Credit Facility [Member]",
        "terseLabel": "Revolving Credit Facility [Member]"
       }
      }
     },
     "localname": "RevolvingCreditFacilityMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability": {
     "auth_ref": [
      "r599",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in right-of-use asset obtained in exchange for finance lease liability.",
        "label": "Right-of-Use Asset Obtained in Exchange for Finance Lease Liability",
        "terseLabel": "Right-of-Use asset obtained in exchange for finance lease liability"
       }
      }
     },
     "localname": "RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": {
     "auth_ref": [
      "r599",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.",
        "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability",
        "terseLabel": "Leased assets obtained in exchange for operating lease liability"
       }
      }
     },
     "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense": {
     "auth_ref": [
      "r734"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of depreciation expense of real estate investments for entities with a substantial portion of business acquiring and holding investment real estate.",
        "label": "SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense",
        "terseLabel": "Depreciation"
       }
      }
     },
     "localname": "SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiiSummaryOfCompanysRealEstateAssetsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SaleOfStockNameOfTransactionDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sale of the entity's stock, including, but not limited to, initial public offering (IPO) and private placement.",
        "label": "Sale of Stock [Domain]",
        "terseLabel": "Sale of Stock"
       }
      }
     },
     "localname": "SaleOfStockNameOfTransactionDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.",
        "label": "Sale of Stock, Number of Shares Issued in Transaction",
        "terseLabel": "Common stock, shares sold"
       }
      }
     },
     "localname": "SaleOfStockNumberOfSharesIssuedInTransaction",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of accrued liabilities.",
        "label": "Schedule of Accrued Liabilities [Table Text Block]",
        "terseLabel": "Summary of Accrued Expenses"
       }
      }
     },
     "localname": "ScheduleOfAccruedLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpensesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": {
     "auth_ref": [
      "r541",
      "r542"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.",
        "label": "Schedule of Business Acquisitions, by Acquisition [Table]",
        "terseLabel": "Schedule Of Business Acquisitions By Acquisition [Table]"
       }
      }
     },
     "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfAllocationOfPurchasePriceAcquisitionCostsDetail",
      "http://lamar.com/role/AcquisitionsSummaryOfUnauditedProFormaFinancialInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock": {
     "auth_ref": [
      "r541",
      "r542"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table  does not include leveraged buyouts.",
        "label": "Schedule of Business Acquisitions, by Acquisition [Table Text Block]",
        "terseLabel": "Summary of Allocation of Purchase Price/Acquisition Costs"
       }
      }
     },
     "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock": {
     "auth_ref": [
      "r291"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.",
        "label": "Schedule of Change in Asset Retirement Obligation [Table Text Block]",
        "terseLabel": "Information Related to Asset Retirement Obligations"
       }
      }
     },
     "localname": "ScheduleOfChangeInAssetRetirementObligationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AssetRetirementObligationsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": {
     "auth_ref": [
      "r515"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
        "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
        "terseLabel": "Income Tax Expense (Benefit)"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDebtInstrumentsTextBlock": {
     "auth_ref": [
      "r44",
      "r116",
      "r309",
      "r312",
      "r313",
      "r314",
      "r583",
      "r584",
      "r586",
      "r684"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.",
        "label": "Schedule of Long-term Debt Instruments [Table Text Block]",
        "terseLabel": "Long-Term Debt"
       }
      }
     },
     "localname": "ScheduleOfDebtInstrumentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable": {
     "auth_ref": [
      "r354",
      "r355"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule, table or text reflecting arrangements that are not equity-based payments, or pension and other postretirement benefits, with individual employees. The arrangements (for example, profit sharing, deferred bonuses or certain split-dollar life insurance arrangements) are generally based on employment contracts between the entity and one or more selected officers or key employees, and which contain a promise by the employer to pay certain amounts at designated future dates, sometimes including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period and the carrying amount as of the balance sheet date of the related liability.",
        "label": "Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits, by Title of Individual and by Type of Deferred Compensation [Table]",
        "terseLabel": "Schedule Of Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Title Of Individual And By Type Of Deferred Compensation [Table]"
       }
      }
     },
     "localname": "ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/BenefitPlansAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": {
     "auth_ref": [
      "r507"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.",
        "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]",
        "terseLabel": "Components of Deferred Taxes"
       }
      }
     },
     "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": {
     "auth_ref": [
      "r492"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
        "terseLabel": "Schedule of Effective Income Tax Rate Reconciliation"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable": {
     "auth_ref": [
      "r267",
      "r271",
      "r648"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Schedule of Finite-Lived Intangible Assets [Table]",
        "terseLabel": "Schedule Of Finite Lived Intangible Assets [Table]"
       }
      }
     },
     "localname": "ScheduleOfFiniteLivedIntangibleAssetsTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfIntangibleAssetsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfGoodwillTable": {
     "auth_ref": [
      "r263",
      "r265"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of goodwill and the changes during the year due to acquisition, sale, impairment or for other reasons.",
        "label": "Schedule of Goodwill [Table]",
        "terseLabel": "Schedule Of Goodwill [Table]"
       }
      }
     },
     "localname": "ScheduleOfGoodwillTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsSummaryOfChangesInGrossCarryingAmountOfGoodwillDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfGoodwillTextBlock": {
     "auth_ref": [
      "r263",
      "r265"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.",
        "label": "Schedule of Goodwill [Table Text Block]",
        "terseLabel": "Summary of Changes in Gross Carrying Amount of Goodwill"
       }
      }
     },
     "localname": "ScheduleOfGoodwillTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock": {
     "auth_ref": [
      "r118"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of income before income tax between domestic and foreign jurisdictions.",
        "label": "Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]",
        "terseLabel": "U.S. and Foreign Components of Earnings Before Income Taxes"
       }
      }
     },
     "localname": "ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock": {
     "auth_ref": [
      "r263"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class.",
        "label": "Schedule of Intangible Assets and Goodwill [Table Text Block]",
        "terseLabel": "Summary of Intangible Assets"
       }
      }
     },
     "localname": "ScheduleOfIntangibleAssetsAndGoodwillTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": {
     "auth_ref": [
      "r296"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of maturity and sinking fund requirement for long-term debt.",
        "label": "Schedule of Maturities of Long-term Debt [Table Text Block]",
        "terseLabel": "Summary of Long-Term Debt Contractual Maturities"
       }
      }
     },
     "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": {
     "auth_ref": [
      "r32",
      "r280"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table]",
        "terseLabel": "Schedule Of Property Plant And Equipment [Table]",
        "verboseLabel": "Property, Plant and Equipment [Table]"
       }
      }
     },
     "localname": "ScheduleOfPropertyPlantAndEquipmentTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DepreciationAndAmortizationDepreciationAndAmortizationExpenseExcludedFromOperatingExpensesInItsCondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/PropertyPlantAndEquipmentSummaryOfMajorCategoriesOfPropertyPlantAndEquipmentDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock": {
     "auth_ref": [
      "r171"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data.",
        "label": "Quarterly Financial Information [Table Text Block]",
        "terseLabel": "Summary of Quarterly Financial Data"
       }
      }
     },
     "localname": "ScheduleOfQuarterlyFinancialInformationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": {
     "auth_ref": [
      "r115",
      "r608",
      "r610"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Schedule of Related Party Transactions, by Related Party [Table]",
        "terseLabel": "Schedule Of Related Party Transactions By Related Party [Table]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RelatedPartyTransactionsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable": {
     "auth_ref": [
      "r62",
      "r210"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material.  An entity may also provide subtotals of geographic information about groups of countries.",
        "label": "Schedule of Revenues from External Customers and Long-Lived Assets [Table]",
        "terseLabel": "Schedule Of Revenues From External Customers And Long Lived Assets [Table]"
       }
      }
     },
     "localname": "ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreasAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": {
     "auth_ref": [
      "r444",
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about share-based payment arrangement.",
        "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]",
        "terseLabel": "Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of employee stock purchase plan activity.",
        "label": "Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]",
        "terseLabel": "Summary of ESPP Share Activity"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock": {
     "auth_ref": [
      "r451",
      "r458",
      "r460"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.",
        "label": "Share-based Payment Arrangement, Option, Activity [Table Text Block]",
        "terseLabel": "Stock Option Transactions under Various Stock-Based Employee Compensation Plans"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfStockByClassTable": {
     "auth_ref": [
      "r46",
      "r109",
      "r174",
      "r175",
      "r305",
      "r306",
      "r307",
      "r309",
      "r310",
      "r311",
      "r312",
      "r313",
      "r314",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule detailing information related to equity by class of stock. Class of stock includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. It also includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity.",
        "label": "Schedule of Stock by Class [Table]",
        "terseLabel": "Schedule Of Stock By Class [Table]"
       }
      }
     },
     "localname": "ScheduleOfStockByClassTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock": {
     "auth_ref": [
      "r501",
      "r516"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the change in unrecognized tax benefits.",
        "label": "Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]",
        "terseLabel": "Reconciliation Unrecognized Tax Benefits"
       }
      }
     },
     "localname": "ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": {
     "auth_ref": [
      "r271"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.",
        "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]",
        "terseLabel": "Summary of Estimated Amortization Expense"
       }
      }
     },
     "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SecuredDebtMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets.",
        "label": "Secured Debt [Member]",
        "terseLabel": "Secured Debt [Member]"
       }
      }
     },
     "localname": "SecuredDebtMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/DistributionRestrictionsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SegmentReportingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment Reporting [Abstract]"
       }
      }
     },
     "localname": "SegmentReportingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SegmentReportingDisclosureTextBlock": {
     "auth_ref": [
      "r185",
      "r186",
      "r187",
      "r193",
      "r194",
      "r199",
      "r203",
      "r204",
      "r205",
      "r206",
      "r207",
      "r210",
      "r211",
      "r212"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.",
        "label": "Segment Reporting Disclosure [Text Block]",
        "terseLabel": "Information about Geographic Areas"
       }
      }
     },
     "localname": "SegmentReportingDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/InformationAboutGeographicAreas"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ShareBasedCompensation": {
     "auth_ref": [
      "r95"
     ],
     "calculation": {
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of noncash expense for share-based payment arrangement.",
        "label": "Share-based Payment Arrangement, Noncash Expense",
        "terseLabel": "Stock-based compensation",
        "verboseLabel": "Non cash compensation expense"
       }
      }
     },
     "localname": "ShareBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1": {
     "auth_ref": [
      "r446"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period",
        "terseLabel": "Award vesting period"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate": {
     "auth_ref": [
      "r464"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate",
        "terseLabel": "Expected dividend yield",
        "verboseLabel": "Dividend Yield"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationWeightedAverageFairValueOfOptionsGrantedDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate": {
     "auth_ref": [
      "r463"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate",
        "terseLabel": "Expected Volatility"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationWeightedAverageFairValueOfOptionsGrantedDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate": {
     "auth_ref": [
      "r465"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The risk-free interest rate assumption that is used in valuing an option on its own shares.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate",
        "terseLabel": "Risk Free Interest Rate"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationWeightedAverageFairValueOfOptionsGrantedDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]",
        "terseLabel": "Share Based Compensation Arrangement By Share Based Payment Award [Line Items]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of additional shares authorized for issuance under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized",
        "terseLabel": "Additional shares reserved"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized": {
     "auth_ref": [
      "r448"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares authorized for issuance under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized",
        "terseLabel": "Shares reserved for issuance to directors and employees"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant": {
     "auth_ref": [
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant",
        "periodEndLabel": "Available for future purchases, ending",
        "periodStartLabel": "Available for future purchases, beginning",
        "terseLabel": "Shares available for future stock option and restricted share grants to employees and directors under existing plans"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber": {
     "auth_ref": [
      "r454"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number",
        "terseLabel": "Exercisable, Ending Balance, Shares"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice": {
     "auth_ref": [
      "r454"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price",
        "terseLabel": "Exercisable, Ending Balance, Weighted Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue": {
     "auth_ref": [
      "r459"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value",
        "terseLabel": "Total intrinsic value of options exercised"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod": {
     "auth_ref": [
      "r457"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period",
        "negatedLabel": "Expired, Shares"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod": {
     "auth_ref": [
      "r455"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net number of share options (or share units) granted during the period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures",
        "terseLabel": "Options granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gross number of share options (or share units) granted during the period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross",
        "terseLabel": "Granted, Shares"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue": {
     "auth_ref": [
      "r469"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value",
        "terseLabel": "Aggregate intrinsic value of options outstanding"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber": {
     "auth_ref": [
      "r453",
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of options outstanding, including both vested and non-vested options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number",
        "periodEndLabel": "Outstanding, Ending Balance, Shares",
        "periodStartLabel": "Outstanding, Beginning Balance, Shares"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice": {
     "auth_ref": [
      "r452"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price",
        "periodEndLabel": "Outstanding, Ending Balance, Weighted Average Exercise Price",
        "periodStartLabel": "Outstanding, Beginning Balance, Weighted Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward": {
     "auth_ref": [
      "r445"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of terms of award under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award",
        "terseLabel": "Award vesting terms"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "auth_ref": [
      "r442",
      "r449"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Award under share-based payment arrangement.",
        "label": "Award Type [Domain]",
        "terseLabel": "Award Type"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average price at which option holders acquired shares when converting their stock options into shares.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price",
        "terseLabel": "Exercised, Weighted-Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price",
        "terseLabel": "Expired, Weighted Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price",
        "terseLabel": "Granted, Weighted Average Exercise Price"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_ShareRepurchaseProgramAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by share repurchase program.",
        "label": "Share Repurchase Program [Axis]"
       }
      }
     },
     "localname": "ShareRepurchaseProgramAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareRepurchaseProgramDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the share repurchase program.",
        "label": "Share Repurchase Program [Domain]"
       }
      }
     },
     "localname": "ShareRepurchaseProgramDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage": {
     "auth_ref": [
      "r446"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of vesting of award under share-based payment arrangement.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage",
        "verboseLabel": "Percentage of awards vesting on grant date"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod": {
     "auth_ref": [
      "r447"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period",
        "terseLabel": "Expiration date of options granted under equity incentive plan"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1": {
     "auth_ref": [
      "r462",
      "r479"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term",
        "terseLabel": "Expected Lives"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationWeightedAverageFairValueOfOptionsGrantedDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1": {
     "auth_ref": [
      "r469"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value",
        "terseLabel": "Aggregate intrinsic value of options exercisable"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1": {
     "auth_ref": [
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term",
        "terseLabel": "Exercisable, Ending Balance, Weighted Average Remaining Contractual Term"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2": {
     "auth_ref": [
      "r461"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term",
        "terseLabel": "Outstanding, Ending balance, Weighted Average Remaining Contractual Term"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_ShortTermDebtTypeAxis": {
     "auth_ref": [
      "r37"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of short-term debt arrangement.",
        "label": "Short-term Debt, Type [Axis]",
        "terseLabel": "Short-term Debt, Type"
       }
      }
     },
     "localname": "ShortTermDebtTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShortTermDebtTypeDomain": {
     "auth_ref": [
      "r34"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of short-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing.",
        "label": "Short-term Debt, Type [Domain]",
        "terseLabel": "Short-term Debt, Type"
       }
      }
     },
     "localname": "ShortTermDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations": {
     "auth_ref": [
      "r112",
      "r491",
      "r525"
     ],
     "calculation": {
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail": {
       "order": 8.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of state and local current and deferred income tax expense (benefit) attributable to continuing operations.",
        "label": "State and Local Income Tax Expense (Benefit), Continuing Operations",
        "terseLabel": "State and local, Total"
       }
      }
     },
     "localname": "StateAndLocalIncomeTaxExpenseBenefitContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesIncomeTaxExpenseBenefitDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StateAndLocalJurisdictionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Designated tax department of a state or local government entitled to levy and collect income taxes from the entity.",
        "label": "State and Local Jurisdiction [Member]",
        "terseLabel": "State and Local Jurisdiction [Member]"
       }
      }
     },
     "localname": "StateAndLocalJurisdictionMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_StatementClassOfStockAxis": {
     "auth_ref": [
      "r18",
      "r19",
      "r20",
      "r109",
      "r111",
      "r157",
      "r158",
      "r159",
      "r162",
      "r164",
      "r174",
      "r175",
      "r176",
      "r220",
      "r308",
      "r572"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by the different classes of stock of the entity.",
        "label": "Class of Stock [Axis]",
        "terseLabel": "Class of Stock"
       }
      }
     },
     "localname": "StatementClassOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AcquisitionsAdditionalInformationDetail",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/Cover",
      "http://lamar.com/role/NonCashFinancingActivitiesAdditionalInformationDetail",
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementEquityComponentsAxis": {
     "auth_ref": [
      "r48",
      "r133",
      "r134",
      "r135",
      "r139",
      "r148",
      "r150",
      "r173",
      "r224",
      "r308",
      "r315",
      "r474",
      "r475",
      "r476",
      "r519",
      "r520",
      "r574",
      "r575",
      "r576",
      "r577",
      "r578",
      "r579",
      "r708",
      "r709",
      "r710"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by component of equity.",
        "label": "Equity Components [Axis]",
        "terseLabel": "Accumulated Comprehensive Income (Loss) [Member]"
       }
      }
     },
     "localname": "StatementEquityComponentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Statement [Line Items]",
        "terseLabel": "Statement [Line Items]"
       }
      }
     },
     "localname": "StatementLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses",
      "http://lamar.com/role/AccruedExpensesTables",
      "http://lamar.com/role/AcquisitionsTables",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
      "http://lamar.com/role/LongTermDebt",
      "http://lamar.com/role/LongTermDebtTables",
      "http://lamar.com/role/NonCashFinancingActivities",
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
      "http://lamar.com/role/RelatedPartyTransactions",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
      "http://lamar.com/role/SignificantAccountingPolicies",
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Cash Flows [Abstract]"
       }
      }
     },
     "localname": "StatementOfCashFlowsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfFinancialPositionAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Financial Position [Abstract]"
       }
      }
     },
     "localname": "StatementOfFinancialPositionAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Stockholders' Equity [Abstract]"
       }
      }
     },
     "localname": "StatementOfStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementTable": {
     "auth_ref": [
      "r133",
      "r134",
      "r135",
      "r173",
      "r647"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.",
        "label": "Statement [Table]",
        "terseLabel": "Statement [Table]"
       }
      }
     },
     "localname": "StatementTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/AccruedExpenses",
      "http://lamar.com/role/AccruedExpensesTables",
      "http://lamar.com/role/AcquisitionsTables",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical",
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementOfCashFlowsDetail",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssets",
      "http://lamar.com/role/GoodwillAndOtherIntangibleAssetsTables",
      "http://lamar.com/role/LongTermDebt",
      "http://lamar.com/role/LongTermDebtTables",
      "http://lamar.com/role/NonCashFinancingActivities",
      "http://lamar.com/role/QuarterlyFinancialDataUnaudited",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedTables",
      "http://lamar.com/role/RelatedPartyTransactions",
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccounts",
      "http://lamar.com/role/ScheduleIiiRealEstateAndAccumulatedDepreciation",
      "http://lamar.com/role/SignificantAccountingPolicies",
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiaries",
      "http://lamar.com/role/SummarizedFinancialInformationOfSubsidiariesTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares issued during the period as a result of an employee stock purchase plan.",
        "label": "Stock Issued During Period, Shares, Employee Stock Purchase Plans",
        "negatedLabel": "Purchases",
        "terseLabel": "Common stock purchase plan (in shares)"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/StockBasedCompensationSummaryOfEsppShareActivityDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesNewIssues": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of new stock issued during the period.",
        "label": "Stock Issued During Period, Shares, New Issues",
        "terseLabel": "Common stock shares issued for cash (in shares)"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesNewIssues",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination.",
        "label": "Stock Issued During Period, Shares, Purchase of Assets",
        "terseLabel": "Common stock shares issued for purchase of assets"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesPurchaseOfAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).",
        "label": "Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture",
        "terseLabel": "Common stock awards"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesShareBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315",
      "r456"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of share options (or share units) exercised during the current period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period",
        "negatedLabel": "Exercised, Shares",
        "terseLabel": "Exercise of stock options (in shares)"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodSharesStockOptionsExercised",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical",
      "http://lamar.com/role/StockBasedCompensationStockOptionTransactionsUnderVariousStockBasedEmployeeCompensationPlansDetail"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate change in value for stock issued during the period as a result of employee stock purchase plan.",
        "label": "Stock Issued During Period, Value, Employee Stock Purchase Plan",
        "terseLabel": "Issuance of shares of common stock through employee purchase plan"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodValueEmployeeStockPurchasePlan",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockIssuedDuringPeriodValueNewIssues": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.",
        "label": "Stock Issued During Period, Value, New Issues",
        "terseLabel": "Issuance of common stock for cash"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodValueNewIssues",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockIssuedDuringPeriodValuePurchaseOfAssets": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination.",
        "label": "Stock Issued During Period, Value, Purchase of Assets",
        "terseLabel": "Issuance of common stock for purchase of assets"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodValuePurchaseOfAssets",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised": {
     "auth_ref": [
      "r48",
      "r308",
      "r315"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Value of stock issued as a result of the exercise of stock options.",
        "label": "Stock Issued During Period, Value, Stock Options Exercised",
        "terseLabel": "Exercise of stock options"
       }
      }
     },
     "localname": "StockIssuedDuringPeriodValueStockOptionsExercised",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockRepurchaseProgramAuthorizedAmount1": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of stock repurchase plan authorized.",
        "label": "Stock Repurchase Program, Authorized Amount",
        "terseLabel": "Stock repurchase program, authorized amount"
       }
      }
     },
     "localname": "StockRepurchaseProgramAuthorizedAmount1",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockRepurchaseProgramExpirationDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.",
        "label": "Stock Repurchase Program Expiration Date",
        "terseLabel": "Stock repurchase program expiry date"
       }
      }
     },
     "localname": "StockRepurchaseProgramExpirationDate",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "dateItemType"
    },
    "us-gaap_StockRepurchasedAndRetiredDuringPeriodValue": {
     "auth_ref": [
      "r19",
      "r20",
      "r308",
      "r315"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).",
        "label": "Stock Repurchased and Retired During Period, Value",
        "terseLabel": "Stock repurchased during period"
       }
      }
     },
     "localname": "StockRepurchasedAndRetiredDuringPeriodValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquity": {
     "auth_ref": [
      "r20",
      "r25",
      "r26",
      "r111",
      "r217",
      "r220",
      "r572"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 15.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.",
        "label": "Stockholders' Equity Attributable to Parent",
        "periodEndLabel": "Ending Balance",
        "periodStartLabel": "Beginning Balance",
        "terseLabel": "Stockholder's equity",
        "totalLabel": "Stockholders' equity"
       }
      }
     },
     "localname": "StockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets",
      "http://lamar.com/role/CondensedConsolidatingBalanceSheetDetail",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stockholders' Equity Attributable to Parent [Abstract]",
        "terseLabel": "Stockholders' equity:"
       }
      }
     },
     "localname": "StockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquityNoteDisclosureTextBlock": {
     "auth_ref": [
      "r110",
      "r315",
      "r318"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.",
        "label": "Stockholders' Equity Note Disclosure [Text Block]",
        "terseLabel": "Stockholders' Equity"
       }
      }
     },
     "localname": "StockholdersEquityNoteDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockholdersEquity"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsequentEventDescription": {
     "auth_ref": [
      "r613"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Describes the event or transaction that occurred between the balance sheet date and the date the financial statements are issued or available to be issued.",
        "label": "Subsequent Event, Description",
        "terseLabel": "Subsequent Event, Description"
       }
      }
     },
     "localname": "SubsequentEventDescription",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.",
        "label": "Subsequent Event [Line Items]",
        "terseLabel": "Subsequent Event [Line Items]"
       }
      }
     },
     "localname": "SubsequentEventLineItems",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventMember": {
     "auth_ref": [
      "r580",
      "r614"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event [Member]",
        "terseLabel": "Subsequent Events [Member]"
       }
      }
     },
     "localname": "SubsequentEventMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventTable": {
     "auth_ref": [
      "r580",
      "r614"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Discloses pertinent information about one or more significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued.",
        "label": "Subsequent Event [Table]",
        "terseLabel": "Subsequent Event [Table]"
       }
      }
     },
     "localname": "SubsequentEventTable",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeAxis": {
     "auth_ref": [
      "r580",
      "r614"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Axis]",
        "terseLabel": "Subsequent Event Type"
       }
      }
     },
     "localname": "SubsequentEventTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeDomain": {
     "auth_ref": [
      "r580",
      "r614"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Domain]",
        "terseLabel": "Subsequent Event Type"
       }
      }
     },
     "localname": "SubsequentEventTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/SubsequentEventsAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsequent Events [Abstract]"
       }
      }
     },
     "localname": "SubsequentEventsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventsPolicyPolicyTextBlock": {
     "auth_ref": [
      "r107"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for reporting subsequent events.",
        "label": "Subsequent Events, Policy [Policy Text Block]",
        "terseLabel": "Subsequent Events"
       }
      }
     },
     "localname": "SubsequentEventsPolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsequentEventsTextBlock": {
     "auth_ref": [
      "r613",
      "r615"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.",
        "label": "Subsequent Events [Text Block]",
        "terseLabel": "Subsequent Events"
       }
      }
     },
     "localname": "SubsequentEventsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SubsequentEvents"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsidiarySaleOfStockAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of sale of the entity's stock.",
        "label": "Sale of Stock [Axis]",
        "terseLabel": "Sale of Stock"
       }
      }
     },
     "localname": "SubsidiarySaleOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail",
      "http://lamar.com/role/StockholdersEquityAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementalCashFlowElementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplemental Cash Flow Elements [Abstract]"
       }
      }
     },
     "localname": "SupplementalCashFlowElementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementalCashFlowInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplemental Cash Flow Information [Abstract]",
        "terseLabel": "Supplemental disclosures of cash flow information:"
       }
      }
     },
     "localname": "SupplementalCashFlowInformationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfCashFlows"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxCreditCarryforwardAmount": {
     "auth_ref": [
      "r510"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.",
        "label": "Tax Credit Carryforward, Amount",
        "terseLabel": "Amounts of credits available to offset income tax"
       }
      }
     },
     "localname": "TaxCreditCarryforwardAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TaxPeriodAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information about the period subject to enacted tax laws.",
        "label": "Tax Period [Axis]",
        "terseLabel": "Tax Period"
       }
      }
     },
     "localname": "TaxPeriodAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TaxPeriodDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identified tax period.",
        "label": "Tax Period [Domain]",
        "terseLabel": "Tax Period"
       }
      }
     },
     "localname": "TaxPeriodDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": {
     "auth_ref": [
      "r218",
      "r219",
      "r616",
      "r617",
      "r618",
      "r619",
      "r620",
      "r621",
      "r622",
      "r623",
      "r624",
      "r625",
      "r626",
      "r627",
      "r628",
      "r629",
      "r630",
      "r631",
      "r632",
      "r633",
      "r634",
      "r635",
      "r636",
      "r637",
      "r638",
      "r639",
      "r640",
      "r641",
      "r642",
      "r643",
      "r644",
      "r645"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.",
        "label": "Financial Instruments [Domain]",
        "terseLabel": "Financial Instruments"
       }
      }
     },
     "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtSummaryOfLongTermDebtContractualMaturitiesDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TreasuryStockMember": {
     "auth_ref": [
      "r47",
      "r316"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Shares of an entity that have been repurchased by the entity. This stock has no voting rights and receives no dividends. Note that treasury stock may be recorded at its total cost or separately as par (or stated) value and additional paid in capital. Classified within stockholders' equity if nonredeemable or redeemable solely at the option of the issuer. Classified within temporary equity if redemption is outside the control of the issuer.",
        "label": "Treasury Stock [Member]",
        "terseLabel": "Treasury Stock [Member]"
       }
      }
     },
     "localname": "TreasuryStockMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity",
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TreasuryStockShares": {
     "auth_ref": [
      "r47",
      "r316"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.",
        "label": "Treasury Stock, Shares",
        "terseLabel": "Shares held in treasury"
       }
      }
     },
     "localname": "TreasuryStockShares",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheetsParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_TreasuryStockSharesAcquired": {
     "auth_ref": [
      "r20",
      "r308",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares that have been repurchased during the period and are being held in treasury.",
        "label": "Treasury Stock, Shares, Acquired",
        "terseLabel": "Purchase of treasury stock (in shares)"
       }
      }
     },
     "localname": "TreasuryStockSharesAcquired",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquityParenthetical"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_TreasuryStockValue": {
     "auth_ref": [
      "r47",
      "r316",
      "r317"
     ],
     "calculation": {
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets": {
       "order": 21.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.",
        "label": "Treasury Stock, Value",
        "negatedLabel": "Cost of shares held in treasury"
       }
      }
     },
     "localname": "TreasuryStockValue",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedBalanceSheets"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TreasuryStockValueAcquiredParValueMethod": {
     "auth_ref": [
      "r308",
      "r315",
      "r316"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the par value method.",
        "label": "Treasury Stock, Value, Acquired, Par Value Method",
        "negatedLabel": "Purchase of treasury stock"
       }
      }
     },
     "localname": "TreasuryStockValueAcquiredParValueMethod",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ConsolidatedStatementsOfStockholdersEquity"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TypeOfAdoptionMember": {
     "auth_ref": [
      "r138",
      "r139",
      "r140",
      "r142",
      "r221",
      "r222",
      "r223",
      "r224",
      "r227",
      "r228",
      "r470",
      "r471",
      "r472",
      "r473",
      "r474",
      "r475",
      "r476",
      "r478",
      "r517",
      "r518",
      "r519",
      "r520",
      "r649",
      "r650",
      "r651",
      "r706",
      "r707",
      "r708",
      "r709",
      "r710",
      "r711",
      "r712",
      "r713",
      "r714",
      "r715",
      "r716",
      "r717"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amendment to accounting standards.",
        "label": "Accounting Standards Update [Domain]",
        "terseLabel": "Type of Adoption"
       }
      }
     },
     "localname": "TypeOfAdoptionMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/RevenuesAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TypeOfArrangementAxis": {
     "auth_ref": [
      "r553"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by collaborative arrangement and arrangement other than collaborative applicable to revenue-generating activity or operations.",
        "label": "Collaborative Arrangement and Arrangement Other than Collaborative [Axis]",
        "terseLabel": "Collaborative Arrangement and Arrangement Other than Collaborative"
       }
      }
     },
     "localname": "TypeOfArrangementAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_TypeOfCostGoodOrServiceExtensibleList": {
     "auth_ref": [
      "r341"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicates type of cost from product sold and service rendered.",
        "label": "Cost, Product and Service [Extensible List]",
        "terseLabel": "Cost, Product and Service [Extensible List]"
       }
      }
     },
     "localname": "TypeOfCostGoodOrServiceExtensibleList",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail"
     ],
     "xbrltype": "extensibleListItemType"
    },
    "us-gaap_TypeOfRevenueExtensibleList": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicates type of revenue from product and service. Includes, but is not limited to, revenue from contract with customer and other sources.",
        "label": "Revenue, Product and Service [Extensible List]",
        "terseLabel": "Revenue, Product and Service [Extensible List]",
        "verboseLabel": "Type of Revenue [Extensible List]"
       }
      }
     },
     "localname": "TypeOfRevenueExtensibleList",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited",
      "http://lamar.com/role/CondensedConsolidatingStatementsOfIncomeAndComprehensiveIncomeDetail",
      "http://lamar.com/role/QuarterlyFinancialDataUnauditedSummaryOfQuarterlyFinancialDataDetail"
     ],
     "xbrltype": "extensibleListItemType"
    },
    "us-gaap_UndistributedEarningsOfForeignSubsidiaries": {
     "auth_ref": [
      "r484",
      "r535",
      "r685",
      "r718"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.",
        "label": "Undistributed Earnings of Foreign Subsidiaries",
        "terseLabel": "Undistributed earnings of subsidiaries"
       }
      }
     },
     "localname": "UndistributedEarningsOfForeignSubsidiaries",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefits": {
     "auth_ref": [
      "r485",
      "r497"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of unrecognized tax benefits.",
        "label": "Unrecognized Tax Benefits",
        "periodEndLabel": "Ending balance",
        "periodStartLabel": "Beginning balance",
        "terseLabel": "Unrecognized tax benefits"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefits",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail",
      "http://lamar.com/role/IncomeTaxesReconciliationUnrecognizedTaxBenefitsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense": {
     "auth_ref": [
      "r494"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.",
        "label": "Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense",
        "terseLabel": "Income tax penalties and interest expense"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions": {
     "auth_ref": [
      "r499"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions",
        "terseLabel": "Additions for tax positions related to current year"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesReconciliationUnrecognizedTaxBenefitsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions": {
     "auth_ref": [
      "r498"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.",
        "label": "Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions",
        "terseLabel": "Additions for tax positions related to prior years"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesReconciliationUnrecognizedTaxBenefitsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations": {
     "auth_ref": [
      "r500"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.",
        "label": "Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations",
        "negatedLabel": "Lapse of statute of limitations"
       }
      }
     },
     "localname": "UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesReconciliationUnrecognizedTaxBenefitsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UseOfEstimates": {
     "auth_ref": [
      "r177",
      "r178",
      "r179",
      "r180",
      "r181",
      "r182",
      "r183"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "terseLabel": "Use of Estimates"
       }
      }
     },
     "localname": "UseOfEstimates",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/SignificantAccountingPoliciesPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount": {
     "auth_ref": [
      "r507"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.",
        "label": "Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount",
        "terseLabel": "Net change in total state valuation allowance"
       }
      }
     },
     "localname": "ValuationAllowanceDeferredTaxAssetChangeInAmount",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/IncomeTaxesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember": {
     "auth_ref": [
      "r130"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Valuation allowance of deferred tax asset attributable to deductible temporary difference and carryforward.",
        "label": "SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]",
        "terseLabel": "Deducted in Balance Sheet from Deferred Tax Assets: Valuation Allowance [Member]"
       }
      }
     },
     "localname": "ValuationAllowanceOfDeferredTaxAssetsMember",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ValuationAllowancesAndReservesBalance": {
     "auth_ref": [
      "r124",
      "r129"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount",
        "periodEndLabel": "Balance at End of Period",
        "periodStartLabel": "Balance at Beginning of Period"
       }
      }
     },
     "localname": "ValuationAllowancesAndReservesBalance",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense": {
     "auth_ref": [
      "r127"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.",
        "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense",
        "terseLabel": "Charged to Costs and Expenses"
       }
      }
     },
     "localname": "ValuationAllowancesAndReservesChargedToCostAndExpense",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ValuationAllowancesAndReservesDeductions": {
     "auth_ref": [
      "r128"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of decrease in valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction",
        "terseLabel": "Deductions"
       }
      }
     },
     "localname": "ValuationAllowancesAndReservesDeductions",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ValuationAllowancesAndReservesDomain": {
     "auth_ref": [
      "r124",
      "r125",
      "r126",
      "r128",
      "r129"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain]",
        "terseLabel": "SEC Schedule, 12-09, Valuation Allowances and Reserves"
       }
      }
     },
     "localname": "ValuationAllowancesAndReservesDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ValuationAllowancesAndReservesTypeAxis": {
     "auth_ref": [
      "r124",
      "r125",
      "r126",
      "r128",
      "r129"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by valuation and qualifying accounts and reserves.",
        "label": "SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis]",
        "terseLabel": "SEC Schedule, 12-09, Valuation Allowances and Reserves Type"
       }
      }
     },
     "localname": "ValuationAllowancesAndReservesTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/ScheduleIiValuationAndQualifyingAccountsDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VariableLeaseCost": {
     "auth_ref": [
      "r597",
      "r603"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.",
        "label": "Variable Lease, Cost"
       }
      }
     },
     "localname": "VariableLeaseCost",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LeasesAdditionalInformationDetail"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VariableRateAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of variable rate.",
        "label": "Variable Rate [Axis]",
        "terseLabel": "Variable Rate"
       }
      }
     },
     "localname": "VariableRateAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VariableRateDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest rate that fluctuates over time as a result of an underlying benchmark interest rate or index.",
        "label": "Variable Rate [Domain]",
        "terseLabel": "Variable Rate"
       }
      }
     },
     "localname": "VariableRateDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/LongTermDebtAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_VestingAxis": {
     "auth_ref": [
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by vesting schedule of award under share-based payment arrangement.",
        "label": "Vesting [Axis]"
       }
      }
     },
     "localname": "VestingAxis",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VestingDomain": {
     "auth_ref": [
      "r469"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Vesting schedule of award under share-based payment arrangement.",
        "label": "Vesting [Domain]"
       }
      }
     },
     "localname": "VestingDomain",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/StockBasedCompensationAdditionalInformationDetail"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding": {
     "auth_ref": [
      "r156",
      "r164"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.",
        "label": "Weighted Average Number of Shares Outstanding, Diluted",
        "terseLabel": "Weighted average common shares outstanding diluted"
       }
      }
     },
     "localname": "WeightedAverageNumberOfDilutedSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Weighted Average Number of Shares Outstanding, Diluted [Abstract]",
        "terseLabel": "Weighted average common shares used in computing earnings per share:"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_WeightedAverageNumberOfSharesOutstandingBasic": {
     "auth_ref": [
      "r154",
      "r164"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.",
        "label": "Weighted Average Number of Shares Outstanding, Basic",
        "terseLabel": "Weighted average common shares outstanding basic"
       }
      }
     },
     "localname": "WeightedAverageNumberOfSharesOutstandingBasic",
     "nsuri": "http://fasb.org/us-gaap/2020-01-31",
     "presentation": [
      "http://lamar.com/role/CondensedConsolidatedStatementsOfIncomeAndComprehensiveIncomeUnaudited"
     ],
     "xbrltype": "sharesItemType"
    }
   },
   "unitCount": 12
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760"
  },
  "r1": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/subtopic&trid=2122178"
  },
  "r10": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r100": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4297-108586"
  },
  "r101": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586"
  },
  "r102": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586"
  },
  "r103": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586"
  },
  "r104": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=SL98516268-108586"
  },
  "r105": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "230",
   "URI": "http://asc.fasb.org/topic&trid=2134446"
  },
  "r106": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18726-107790"
  },
  "r107": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790"
  },
  "r108": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=84158767&loc=d3e18823-107790"
  },
  "r109": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(d))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r11": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(13))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r110": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(e)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r111": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(g)(1)(ii))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r112": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(1)(Note 1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r113": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(1)(i))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r114": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r115": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r116": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(e),(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r117": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r118": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(h)(1)(i))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r119": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(h)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r12": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(14))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r120": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(h))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r121": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08.(k)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r122": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690"
  },
  "r123": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04.(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690"
  },
  "r124": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column B))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r125": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column C(1)))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r126": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column C(2)))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r127": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column C)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r128": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column D))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r129": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(Column E))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r13": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r130": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09(ColumnA))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r131": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-09)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690"
  },
  "r132": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "235",
   "URI": "http://asc.fasb.org/topic&trid=2122369"
  },
  "r133": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "23",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21914-107793"
  },
  "r134": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21930-107793"
  },
  "r135": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=115929471&loc=d3e21711-107793"
  },
  "r136": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r137": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(1)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r138": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r139": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(3)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r14": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(20))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r140": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(4)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r141": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r142": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22499-107794"
  },
  "r143": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
  },
  "r144": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22694-107794"
  },
  "r145": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22583-107794"
  },
  "r146": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22595-107794"
  },
  "r147": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
  },
  "r148": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22644-107794"
  },
  "r149": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794"
  },
  "r15": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(22))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r150": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794"
  },
  "r151": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.M.Q2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=112272810&loc=d3e31137-122693"
  },
  "r152": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=112272810&loc=SL108384541-122693"
  },
  "r153": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "250",
   "URI": "http://asc.fasb.org/topic&trid=2122394"
  },
  "r154": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1448-109256"
  },
  "r155": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1377-109256"
  },
  "r156": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1505-109256"
  },
  "r157": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1252-109256"
  },
  "r158": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1278-109256"
  },
  "r159": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "55",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e2626-109256"
  },
  "r16": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r160": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256"
  },
  "r161": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256"
  },
  "r162": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=SL5780133-109256"
  },
  "r163": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=121326447&loc=d3e1337-109256"
  },
  "r164": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r165": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257"
  },
  "r166": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257"
  },
  "r167": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537"
  },
  "r168": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=120380238&loc=d3e3842-109258"
  },
  "r169": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "52",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=120380238&loc=d3e4984-109258"
  },
  "r17": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r170": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "260",
   "URI": "http://asc.fasb.org/topic&trid=2144383"
  },
  "r171": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=121640914&loc=d3e1280-108306"
  },
  "r172": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "270",
   "URI": "http://asc.fasb.org/topic&trid=2126967"
  },
  "r173": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70191-108054"
  },
  "r174": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6828210&loc=d3e70229-108054"
  },
  "r175": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055"
  },
  "r176": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055"
  },
  "r177": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r178": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r179": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
  },
  "r18": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(27))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r180": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
  },
  "r181": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
  },
  "r182": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
  },
  "r183": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
  },
  "r184": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "275",
   "URI": "http://asc.fasb.org/topic&trid=2134479"
  },
  "r185": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8657-108599"
  },
  "r186": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599"
  },
  "r187": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8721-108599"
  },
  "r188": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r189": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r19": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(28))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r190": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r191": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r192": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r193": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599"
  },
  "r194": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "26",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8844-108599"
  },
  "r195": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
  },
  "r196": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
  },
  "r197": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
  },
  "r198": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599"
  },
  "r199": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "31",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8924-108599"
  },
  "r2": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
  },
  "r20": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(29))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r200": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r201": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r202": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r203": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r204": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r205": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8933-108599"
  },
  "r206": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "34",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e8981-108599"
  },
  "r207": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9031-108599"
  },
  "r208": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "41",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
  },
  "r209": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "41",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
  },
  "r21": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r210": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "41",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599"
  },
  "r211": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "42",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599"
  },
  "r212": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "280",
   "URI": "http://asc.fasb.org/topic&trid=2134510"
  },
  "r213": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4647-111522"
  },
  "r214": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522"
  },
  "r215": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=121593590&loc=d3e4531-111522"
  },
  "r216": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524"
  },
  "r217": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 4.E)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707"
  },
  "r218": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=d3e27232-111563"
  },
  "r219": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563"
  },
  "r22": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r220": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r221": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r222": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r223": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r224": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r225": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r226": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r227": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(3)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r228": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(4)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121646688&loc=SL121648383-210437"
  },
  "r229": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121647444&loc=SL120269210-210444"
  },
  "r23": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r230": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5A",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121647444&loc=SL120254536-210444"
  },
  "r231": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8A",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121648281&loc=SL120267834-210445"
  },
  "r232": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446"
  },
  "r233": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599878&loc=SL120267845-210446"
  },
  "r234": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919244-210447"
  },
  "r235": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
  },
  "r236": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447"
  },
  "r237": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919253-210447"
  },
  "r238": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447"
  },
  "r239": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919260-210447"
  },
  "r24": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(4))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r240": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919272-210447"
  },
  "r241": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL120267966-210447"
  },
  "r242": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL120267969-210447"
  },
  "r243": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447"
  },
  "r244": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121614247&loc=SL120267897-210452"
  },
  "r245": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13A",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121565518&loc=SL120267917-210453"
  },
  "r246": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121565518&loc=SL120269220-210453"
  },
  "r247": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267853-210455"
  },
  "r248": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267859-210455"
  },
  "r249": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL120267862-210455"
  },
  "r25": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r250": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455"
  },
  "r251": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922895-210455"
  },
  "r252": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455"
  },
  "r253": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456"
  },
  "r254": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "340",
   "URI": "http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054"
  },
  "r255": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266"
  },
  "r256": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266"
  },
  "r257": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975"
  },
  "r258": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r259": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r26": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(31))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r260": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r261": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r262": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r263": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r264": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267"
  },
  "r265": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267"
  },
  "r266": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274"
  },
  "r267": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r268": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(3)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r269": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(d)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r27": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(32))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r270": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r271": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r272": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(1)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r273": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(2)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r274": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(3)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r275": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(d)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r276": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "350",
   "URI": "http://asc.fasb.org/topic&trid=2144416"
  },
  "r277": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226317&loc=d3e202-110218"
  },
  "r278": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r279": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r28": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(4)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r280": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r281": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
  },
  "r282": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 5.CC)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742"
  },
  "r283": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "360",
   "URI": "http://asc.fasb.org/topic&trid=2155823"
  },
  "r284": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392676&loc=d3e7480-110848"
  },
  "r285": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r286": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(1)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r287": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r288": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(3)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r289": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r29": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.1)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r290": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/subtopic&trid=2175671"
  },
  "r291": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859"
  },
  "r292": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "440",
   "URI": "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308"
  },
  "r293": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "440",
   "URI": "http://asc.fasb.org/extlink&oid=121559207&loc=d3e25336-109308"
  },
  "r294": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "440",
   "URI": "http://asc.fasb.org/topic&trid=2144648"
  },
  "r295": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "450",
   "URI": "http://asc.fasb.org/topic&trid=2127136"
  },
  "r296": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601"
  },
  "r297": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=6802200&loc=SL6230698-112601"
  },
  "r298": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-10(d)(4)(iii))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=120397115&loc=d3e168853-122756"
  },
  "r299": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-10(d)(4)(iv))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=120397115&loc=d3e168853-122756"
  },
  "r3": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
  },
  "r30": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r300": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870"
  },
  "r301": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870"
  },
  "r302": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "40",
   "SubTopic": "50",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629"
  },
  "r303": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "40",
   "SubTopic": "50",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629"
  },
  "r304": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "470",
   "URI": "http://asc.fasb.org/topic&trid=2208564"
  },
  "r305": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(CFRR 211.02)",
   "Topic": "480",
   "URI": "http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764"
  },
  "r306": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643"
  },
  "r307": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644"
  },
  "r308": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644"
  },
  "r309": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644"
  },
  "r31": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r310": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644"
  },
  "r311": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644"
  },
  "r312": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644"
  },
  "r313": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644"
  },
  "r314": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644"
  },
  "r315": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-04)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770"
  },
  "r316": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655"
  },
  "r317": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656"
  },
  "r318": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "505",
   "URI": "http://asc.fasb.org/topic&trid=2208762"
  },
  "r319": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121556615&loc=SL49130531-203044"
  },
  "r32": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.14)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r320": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121556615&loc=SL49130532-203044"
  },
  "r321": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045"
  },
  "r322": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
  },
  "r323": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
  },
  "r324": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
  },
  "r325": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
  },
  "r326": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045"
  },
  "r327": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045"
  },
  "r328": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045"
  },
  "r329": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130561-203045"
  },
  "r33": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.17)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r330": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130563-203045"
  },
  "r331": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130563-203045"
  },
  "r332": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130564-203045"
  },
  "r333": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
  },
  "r334": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
  },
  "r335": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
  },
  "r336": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130566-203045"
  },
  "r337": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130543-203045"
  },
  "r338": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045"
  },
  "r339": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045"
  },
  "r34": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r340": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045"
  },
  "r341": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r342": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r343": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r344": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r345": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r346": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r347": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=121551570&loc=SL49130690-203046-203046"
  },
  "r348": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
  },
  "r349": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
  },
  "r35": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a),20,24)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r350": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(i)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
  },
  "r351": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(j)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
  },
  "r352": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=113356391&loc=SL49131195-203048"
  },
  "r353": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "606",
   "URI": "http://asc.fasb.org/topic&trid=49130388"
  },
  "r354": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Topic": "710",
   "URI": "http://asc.fasb.org/extlink&oid=6409733&loc=d3e19524-108361"
  },
  "r355": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "10",
   "Topic": "710",
   "URI": "http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363"
  },
  "r356": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "710",
   "URI": "http://asc.fasb.org/extlink&oid=6409961&loc=d3e20487-108367"
  },
  "r357": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "712",
   "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
  },
  "r358": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "712",
   "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
  },
  "r359": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=109237824&loc=d3e1703-114919"
  },
  "r36": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(b),22(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r360": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r361": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r362": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(10)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r363": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r364": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r365": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r366": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r367": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r368": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r369": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(8)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r37": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r370": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(9)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r371": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r372": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r373": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r374": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r375": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r376": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r377": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r378": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r379": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(8)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r38": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19,20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r380": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r381": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(i)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r382": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(ii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r383": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r384": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(01)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r385": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r386": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(A)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r387": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(B)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r388": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(C)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r389": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(03)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r39": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19-26)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r390": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r391": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(f)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r392": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r393": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r394": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r395": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r396": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r397": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r398": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r399": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r4": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6676-107765"
  },
  "r40": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r400": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r401": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(i)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r402": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(j)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r403": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r404": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r405": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r406": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(l)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r407": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(n)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r408": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(o)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r409": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(p)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r41": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.21)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r410": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(q)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r411": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(r)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r412": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(r)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920"
  },
  "r413": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2410-114920"
  },
  "r414": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r415": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r416": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r417": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r418": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r419": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r42": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r420": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r421": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r422": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920"
  },
  "r423": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118255775&loc=d3e2919-114920"
  },
  "r424": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921"
  },
  "r425": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=118257860&loc=d3e4587-114921"
  },
  "r426": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802"
  },
  "r427": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "60",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964"
  },
  "r428": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "70",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942"
  },
  "r429": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946"
  },
  "r43": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r430": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r431": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r432": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r433": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r434": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r435": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r436": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r437": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r438": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947"
  },
  "r439": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948"
  },
  "r44": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r440": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "715",
   "URI": "http://asc.fasb.org/topic&trid=2235017"
  },
  "r441": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121326096&loc=d3e4534-113899"
  },
  "r442": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r443": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r444": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r445": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r446": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r447": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r448": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r449": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r45": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.24)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r450": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b),(f(1))",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r451": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r452": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r453": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(i)-(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r454": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r455": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r456": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r457": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(4)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r458": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r459": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r46": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.28,29)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r460": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r461": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r462": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r463": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r464": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(iii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r465": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)(iv)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r466": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r467": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r468": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r469": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r47": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.29,30)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r470": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r471": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r472": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r473": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r474": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r475": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(f)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r476": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r477": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r478": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r479": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.D.2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
  },
  "r48": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.29-31)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r480": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.F)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809"
  },
  "r481": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11149-113907"
  },
  "r482": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120383193&loc=d3e11178-113907"
  },
  "r483": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "718",
   "URI": "http://asc.fasb.org/topic&trid=2228938"
  },
  "r484": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121573983&loc=d3e28200-109314"
  },
  "r485": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318"
  },
  "r486": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32059-109318"
  },
  "r487": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32247-109318"
  },
  "r488": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=d3e32280-109318"
  },
  "r489": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=d3e31917-109318"
  },
  "r49": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.8)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r490": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120406818&loc=d3e31931-109318"
  },
  "r491": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32672-109319"
  },
  "r492": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319"
  },
  "r493": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32705-109319"
  },
  "r494": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r495": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)(3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r496": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319"
  },
  "r497": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r498": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r499": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r5": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6801-107765"
  },
  "r50": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.9)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r500": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(4)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r501": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319"
  },
  "r502": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32809-109319"
  },
  "r503": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32840-109319"
  },
  "r504": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r505": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r506": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r507": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319"
  },
  "r508": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32847-109319"
  },
  "r509": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32857-109319"
  },
  "r51": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580"
  },
  "r510": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319"
  },
  "r511": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319"
  },
  "r512": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319"
  },
  "r513": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r514": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r515": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=84230637&loc=d3e32639-109319"
  },
  "r516": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "217",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121610041&loc=d3e36027-109320"
  },
  "r517": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740"
  },
  "r518": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740"
  },
  "r519": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)(2)",
   "Topic": "740"
  },
  "r52": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580"
  },
  "r520": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)(3)",
   "Topic": "740"
  },
  "r521": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "740"
  },
  "r522": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "740"
  },
  "r523": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(3)",
   "Topic": "740"
  },
  "r524": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I.5.Q1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r525": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r526": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r527": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r528": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r529": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r53": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e681-108580"
  },
  "r530": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.4)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330036-122817"
  },
  "r531": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.C)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817"
  },
  "r532": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=120385591&loc=d3e38679-109324"
  },
  "r533": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "270",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338"
  },
  "r534": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331"
  },
  "r535": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331"
  },
  "r536": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "740",
   "URI": "http://asc.fasb.org/topic&trid=2144680"
  },
  "r537": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Subparagraph": "(a)-(d)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=6909625&loc=d3e227-128457"
  },
  "r538": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460"
  },
  "r539": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(2)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
  },
  "r54": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580"
  },
  "r540": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(3)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
  },
  "r541": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
  },
  "r542": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463"
  },
  "r543": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "37",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=121600890&loc=d3e2207-128464"
  },
  "r544": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=121647850&loc=d3e4845-128472"
  },
  "r545": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=121647850&loc=SL65897772-128472"
  },
  "r546": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=121598580&loc=d3e5263-128473"
  },
  "r547": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "30",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477"
  },
  "r548": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "30",
   "SubTopic": "30",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477"
  },
  "r549": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)(1)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
  },
  "r55": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580"
  },
  "r550": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(b)(4)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
  },
  "r551": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(d)",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479"
  },
  "r552": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "805",
   "URI": "http://asc.fasb.org/topic&trid=2303972"
  },
  "r553": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "808",
   "URI": "http://asc.fasb.org/extlink&oid=6931272&loc=SL5834143-161434"
  },
  "r554": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683"
  },
  "r555": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=108774443&loc=SL4569643-111683"
  },
  "r556": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
  },
  "r557": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
  },
  "r558": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
  },
  "r559": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r56": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580"
  },
  "r560": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r561": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(3)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r562": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bb)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685"
  },
  "r563": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=121559654&loc=d3e5710-111685"
  },
  "r564": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4J",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=120409616&loc=SL4591551-111686"
  },
  "r565": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4K",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=120409616&loc=SL4591552-111686"
  },
  "r566": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959"
  },
  "r567": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959"
  },
  "r568": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "182",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=121582272&loc=SL5629052-113961"
  },
  "r569": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(2)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r57": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580"
  },
  "r570": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258"
  },
  "r571": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611"
  },
  "r572": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=75031198&loc=d3e14064-108612"
  },
  "r573": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "230",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906"
  },
  "r574": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900"
  },
  "r575": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r576": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r577": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(c)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r578": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(d)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r579": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901"
  },
  "r58": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580"
  },
  "r580": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901"
  },
  "r581": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "830",
   "URI": "http://asc.fasb.org/topic&trid=2175825"
  },
  "r582": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r583": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28541-108399"
  },
  "r584": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399"
  },
  "r585": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399"
  },
  "r586": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400"
  },
  "r587": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "840",
   "URI": "http://asc.fasb.org/topic&trid=2208923"
  },
  "r588": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977"
  },
  "r589": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977"
  },
  "r59": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=121641772&loc=d3e557-108580"
  },
  "r590": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918638-209977"
  },
  "r591": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977"
  },
  "r592": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121603541&loc=SL77918643-209977"
  },
  "r593": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918666-209980"
  },
  "r594": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918673-209980"
  },
  "r595": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r596": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r597": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r598": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(1)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r599": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(2)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r6": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6904-107765"
  },
  "r60": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=116657188&loc=SL116659661-227067"
  },
  "r600": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(3)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r601": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(4)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980"
  },
  "r602": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980"
  },
  "r603": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "53",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971"
  },
  "r604": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r605": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r606": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r607": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r608": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r609": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864"
  },
  "r61": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(210.5-03(11))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r610": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864"
  },
  "r611": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
  },
  "r612": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "850",
   "URI": "http://asc.fasb.org/topic&trid=2122745"
  },
  "r613": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662"
  },
  "r614": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662"
  },
  "r615": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "855",
   "URI": "http://asc.fasb.org/topic&trid=2122774"
  },
  "r616": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)(i)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r617": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)(ii)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r618": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r619": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r62": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(1))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r620": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r621": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r622": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r623": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r624": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r625": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r626": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r627": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r628": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r629": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728"
  },
  "r63": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(10))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r630": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729"
  },
  "r631": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r632": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r633": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r634": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(4)(i)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746"
  },
  "r635": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r636": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r637": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r638": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(4)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r639": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(5)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r64": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(20))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r640": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(6)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r641": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(7)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r642": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(b)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r643": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r644": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r645": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=116651436&loc=d3e122739-111746"
  },
  "r646": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "910",
   "URI": "http://asc.fasb.org/extlink&oid=119991564&loc=SL119991595-234733"
  },
  "r647": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.L)",
   "Topic": "924",
   "URI": "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856"
  },
  "r648": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959"
  },
  "r649": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r65": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(24))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r650": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r651": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r652": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(1)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r653": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(2)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r654": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(3)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r655": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "340",
   "Topic": "928",
   "URI": "http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004"
  },
  "r656": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r657": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61929-109447"
  },
  "r658": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r659": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62059-109447"
  },
  "r66": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(25))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r660": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r661": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62395-109447"
  },
  "r662": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r663": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "33",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447"
  },
  "r664": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(a)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r665": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "35A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(b)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=SL6807758-109447"
  },
  "r666": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(1)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r667": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "235",
   "Subparagraph": "(c)(2)",
   "Topic": "932",
   "URI": "http://asc.fasb.org/extlink&oid=68064819&loc=d3e61872-109447"
  },
  "r668": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "20",
   "Topic": "940",
   "URI": "http://asc.fasb.org/extlink&oid=68072869&loc=d3e41242-110953"
  },
  "r669": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(10)(1))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r67": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(4))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r670": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(11))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r671": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(13))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r672": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r673": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(16))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r674": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r675": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(15))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r676": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(22))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r677": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(26))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r678": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(27))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r679": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.9)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r68": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(5))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r680": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.9-05(b)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884"
  },
  "r681": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "405",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817"
  },
  "r682": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Subparagraph": "(a)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r683": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Subparagraph": "e",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r684": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "470",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823"
  },
  "r685": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Subparagraph": "(b)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=6479915&loc=d3e66715-112838"
  },
  "r686": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(15)(b)(2))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r687": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r688": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(12))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r689": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r69": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(8))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r690": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r691": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r692": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(25))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r693": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r694": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.3)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r695": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(18))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r696": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(22))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r697": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(23))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r698": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r699": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(9))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r7": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6911-107765"
  },
  "r70": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r700": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
  },
  "r701": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(d)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121643868&loc=SL117782755-158439"
  },
  "r702": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121639165&loc=SL117783719-158441"
  },
  "r703": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121639165&loc=SL117783719-158441"
  },
  "r704": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121639165&loc=SL117783719-158441"
  },
  "r705": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29F",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121639165&loc=SL117819544-158441"
  },
  "r706": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r707": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r708": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r709": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(f)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r71": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.1(e))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r710": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(f)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r711": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r712": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(i)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r713": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(ii)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r714": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(iii)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r715": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(iv)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r716": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(h)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r717": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(h)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=121370832&loc=SL117420844-207641"
  },
  "r718": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=6487024&loc=d3e29054-158556"
  },
  "r719": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.6-07.1(c))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272"
  },
  "r72": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.2(a),(d))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r720": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "310",
   "Subparagraph": "(SX 210.12-29(Footnote 4))",
   "Topic": "948",
   "URI": "http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014"
  },
  "r721": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "740",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491622&loc=d3e9504-115650"
  },
  "r722": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Subparagraph": "(d)",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916"
  },
  "r723": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916"
  },
  "r724": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916"
  },
  "r725": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column B))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r726": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column C))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r727": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column D))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r728": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column E))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r729": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column F))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r73": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.4)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r730": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column G))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r731": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column H))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r732": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Column I))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r733": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 2))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r734": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 4))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r735": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28)",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r736": {
   "Name": "Regulation 12B",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r737": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(a)",
   "Publisher": "SEC",
   "Section": "303",
   "Subparagraph": "(5)"
  },
  "r738": {
   "Footnote": "2",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r739": {
   "Footnote": "4",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r74": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7(b))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r740": {
   "Footnote": "4",
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "29"
  },
  "r741": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "Column B",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r742": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "a",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "04"
  },
  "r743": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "09"
  },
  "r744": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "28"
  },
  "r745": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "c",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "4",
   "Subsection": "10"
  },
  "r746": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "d",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "(4)(iii)",
   "Subsection": "10"
  },
  "r747": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "d",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "(4)(iv)",
   "Subsection": "10"
  },
  "r748": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "d",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "4",
   "Subsection": "10"
  },
  "r749": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "e",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "4",
   "Subsection": "10"
  },
  "r75": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r750": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "f",
   "Publisher": "SEC",
   "Section": "3",
   "Subparagraph": "4",
   "Subsection": "10"
  },
  "r751": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "i",
   "Publisher": "SEC",
   "Section": "3",
   "Subsection": "10"
  },
  "r752": {
   "Name": "Regulation S-X (SX)",
   "Number": "210",
   "Paragraph": "c",
   "Publisher": "SEC",
   "Section": "5",
   "Subparagraph": "Schedule III",
   "Subsection": "04"
  },
  "r76": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.9)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227"
  },
  "r77": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585"
  },
  "r78": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585"
  },
  "r79": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585"
  },
  "r8": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e6935-107765"
  },
  "r80": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
  },
  "r81": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585"
  },
  "r82": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585"
  },
  "r83": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585"
  },
  "r84": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585"
  },
  "r85": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
  },
  "r86": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
  },
  "r87": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585"
  },
  "r88": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585"
  },
  "r89": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3000-108585"
  },
  "r9": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=121566466&loc=d3e7018-107765"
  },
  "r90": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=SL94080549-108585"
  },
  "r91": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3521-108585"
  },
  "r92": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
  },
  "r93": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
  },
  "r94": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3536-108585"
  },
  "r95": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
  },
  "r96": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
  },
  "r97": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585"
  },
  "r98": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121586364&loc=d3e3044-108585"
  },
  "r99": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=121583591&loc=d3e4273-108586"
  }
 },
 "version": "2.1"
}
