3.19.3 html 605 418 1 false 107 0 false 11 false false R1.htm 0001001 - Document - Document and Entity Information Sheet http://lyonhomes.com/role/DocumentandEntityInformation Document and Entity Information Cover 1 false false R2.htm 1001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS CONDENSED CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 1002003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS Statements 4 false false R5.htm 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENT OF EQUITY Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDSTATEMENTOFEQUITY CONDENSED CONSOLIDATED STATEMENT OF EQUITY Statements 5 false false R6.htm 1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 1006007 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Sheet http://lyonhomes.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSParenthetical CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) Statements 7 false false R8.htm 2101101 - Disclosure - Basis of Presentation and Significant Accounting Policies Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPolicies Basis of Presentation and Significant Accounting Policies Notes 8 false false R9.htm 2107102 - Disclosure - Acquisition of South Pacific Financial Corporation (Notes) Notes http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationNotes Acquisition of South Pacific Financial Corporation (Notes) Notes 9 false false R10.htm 2113103 - Disclosure - Acquisition of RSI Communities Sheet http://lyonhomes.com/role/AcquisitionofRSICommunities Acquisition of RSI Communities Notes 10 false false R11.htm 2119104 - Disclosure - Variable Interest Entities and Noncontrolling Interests Sheet http://lyonhomes.com/role/VariableInterestEntitiesandNoncontrollingInterests Variable Interest Entities and Noncontrolling Interests Notes 11 false false R12.htm 2121105 - Disclosure - Investments in Unconsolidated Joint Ventures Sheet http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVentures Investments in Unconsolidated Joint Ventures Notes 12 false false R13.htm 2126106 - Disclosure - Segment Information Sheet http://lyonhomes.com/role/SegmentInformation Segment Information Notes 13 false false R14.htm 2131107 - Disclosure - Real Estate Inventories Sheet http://lyonhomes.com/role/RealEstateInventories Real Estate Inventories Notes 14 false false R15.htm 2134108 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness Senior Notes, Secured, and Unsecured Indebtedness Notes 15 false false R16.htm 2153109 - Disclosure - Financial Services (Notes) Notes http://lyonhomes.com/role/FinancialServicesNotes Financial Services (Notes) Notes 16 false false R17.htm 2158110 - Disclosure - Fair Value of Financial Instruments Sheet http://lyonhomes.com/role/FairValueofFinancialInstruments Fair Value of Financial Instruments Notes 17 false false R18.htm 2161111 - Disclosure - Related Party Transactions Sheet http://lyonhomes.com/role/RelatedPartyTransactions Related Party Transactions Notes 18 false false R19.htm 2163112 - Disclosure - Income Taxes Sheet http://lyonhomes.com/role/IncomeTaxes Income Taxes Notes 19 false false R20.htm 2165113 - Disclosure - Income Per Common Share Sheet http://lyonhomes.com/role/IncomePerCommonShare Income Per Common Share Notes 20 false false R21.htm 2168114 - Disclosure - Stock Based Compensation Sheet http://lyonhomes.com/role/StockBasedCompensation Stock Based Compensation Notes 21 false false R22.htm 2170115 - Disclosure - Commitments and Contingencies Sheet http://lyonhomes.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 22 false false R23.htm 2178116 - Disclosure - Subsequent Events Sheet http://lyonhomes.com/role/SubsequentEvents Subsequent Events Notes 23 false false R24.htm 2202201 - Disclosure - Basis of Presentation and Significant Accounting Policies (Policies) Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesPolicies Basis of Presentation and Significant Accounting Policies (Policies) Policies http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPolicies 24 false false R25.htm 2303301 - Disclosure - Basis of Presentation and Significant Accounting Policies (Tables) Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesTables Basis of Presentation and Significant Accounting Policies (Tables) Tables http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPolicies 25 false false R26.htm 2308302 - Disclosure - Acquisition of South Pacific Financial Corporation (Tables) Sheet http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationTables Acquisition of South Pacific Financial Corporation (Tables) Tables http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationNotes 26 false false R27.htm 2314303 - Disclosure - Acquisition of RSI Communities (Tables) Sheet http://lyonhomes.com/role/AcquisitionofRSICommunitiesTables Acquisition of RSI Communities (Tables) Tables http://lyonhomes.com/role/AcquisitionofRSICommunities 27 false false R28.htm 2322304 - Disclosure - Investments in Unconsolidated Joint Ventures (Tables) Sheet http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVenturesTables Investments in Unconsolidated Joint Ventures (Tables) Tables http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVentures 28 false false R29.htm 2327305 - Disclosure - Segment Information (Tables) Sheet http://lyonhomes.com/role/SegmentInformationTables Segment Information (Tables) Tables http://lyonhomes.com/role/SegmentInformation 29 false false R30.htm 2332306 - Disclosure - Real Estate Inventories (Tables) Sheet http://lyonhomes.com/role/RealEstateInventoriesTables Real Estate Inventories (Tables) Tables http://lyonhomes.com/role/RealEstateInventories 30 false false R31.htm 2335307 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness (Tables) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessTables Senior Notes, Secured, and Unsecured Indebtedness (Tables) Tables http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness 31 false false R32.htm 2354308 - Disclosure - Financial Services (Tables) Sheet http://lyonhomes.com/role/FinancialServicesTables Financial Services (Tables) Tables http://lyonhomes.com/role/FinancialServicesNotes 32 false false R33.htm 2359309 - Disclosure - Fair Value of Financial Instruments (Tables) Sheet http://lyonhomes.com/role/FairValueofFinancialInstrumentsTables Fair Value of Financial Instruments (Tables) Tables http://lyonhomes.com/role/FairValueofFinancialInstruments 33 false false R34.htm 2366310 - Disclosure - Income Per Common Share (Tables) Sheet http://lyonhomes.com/role/IncomePerCommonShareTables Income Per Common Share (Tables) Tables http://lyonhomes.com/role/IncomePerCommonShare 34 false false R35.htm 2371311 - Disclosure - Commitments and Contingencies (Tables) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesTables Commitments and Contingencies (Tables) Tables http://lyonhomes.com/role/CommitmentsandContingencies 35 false false R36.htm 2404401 - Disclosure - Basis of Presentation and Significant Accounting Policies - Narrative (Details) Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesNarrativeDetails Basis of Presentation and Significant Accounting Policies - Narrative (Details) Details http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesTables 36 false false R37.htm 2405402 - Disclosure - Basis of Presentation and Significant Accounting Policies - Summary of Changes in Warranty Liability (Details) Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesSummaryofChangesinWarrantyLiabilityDetails Basis of Presentation and Significant Accounting Policies - Summary of Changes in Warranty Liability (Details) Details 37 false false R38.htm 2406403 - Disclosure - Basis of Presentation and Significant Accounting Policies - Schedule of Interest Activity (Details) Sheet http://lyonhomes.com/role/BasisofPresentationandSignificantAccountingPoliciesScheduleofInterestActivityDetails Basis of Presentation and Significant Accounting Policies - Schedule of Interest Activity (Details) Details 38 false false R39.htm 2409404 - Disclosure - Acquisition of South Pacific Financial Corporation (Details) Sheet http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationDetails Acquisition of South Pacific Financial Corporation (Details) Details http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationTables 39 false false R40.htm 2410405 - Disclosure - Acquisition of South Pacific Financial Corporation - Reconciliation of Consideration Transferred (Details) Sheet http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationReconciliationofConsiderationTransferredDetails Acquisition of South Pacific Financial Corporation - Reconciliation of Consideration Transferred (Details) Details 40 false false R41.htm 2411406 - Disclosure - Acquisition of South Pacific Financial Corporation - Summary of Assets and Liabilities Assumed (Details) Sheet http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationSummaryofAssetsandLiabilitiesAssumedDetails Acquisition of South Pacific Financial Corporation - Summary of Assets and Liabilities Assumed (Details) Details 41 false false R42.htm 2412407 - Disclosure - Acquisition of South Pacific Financial Corporation - Supplemental Pro Forma Information (Details) Sheet http://lyonhomes.com/role/AcquisitionofSouthPacificFinancialCorporationSupplementalProFormaInformationDetails Acquisition of South Pacific Financial Corporation - Supplemental Pro Forma Information (Details) Details 42 false false R43.htm 2415408 - Disclosure - Acquisition of RSI Communities - Narrative (Details) Sheet http://lyonhomes.com/role/AcquisitionofRSICommunitiesNarrativeDetails Acquisition of RSI Communities - Narrative (Details) Details 43 false false R44.htm 2416409 - Disclosure - Acquisition of RSI Communities - Schedule of Reconciliation of Consideration Transferred as of Acquisition Date (Details) Sheet http://lyonhomes.com/role/AcquisitionofRSICommunitiesScheduleofReconciliationofConsiderationTransferredasofAcquisitionDateDetails Acquisition of RSI Communities - Schedule of Reconciliation of Consideration Transferred as of Acquisition Date (Details) Details 44 false false R45.htm 2417410 - Disclosure - Acquisition of RSI Communities - Summary of Preliminary Amounts for Acquired Assets and Liabilities Recorded at Fair Value (Details) Sheet http://lyonhomes.com/role/AcquisitionofRSICommunitiesSummaryofPreliminaryAmountsforAcquiredAssetsandLiabilitiesRecordedatFairValueDetails Acquisition of RSI Communities - Summary of Preliminary Amounts for Acquired Assets and Liabilities Recorded at Fair Value (Details) Details 45 false false R46.htm 2418411 - Disclosure - Acquisition of RSI Communities - Summary of Unaudited Pro Forma Amounts of RSI Communities Acquisition (Details) Sheet http://lyonhomes.com/role/AcquisitionofRSICommunitiesSummaryofUnauditedProFormaAmountsofRSICommunitiesAcquisitionDetails Acquisition of RSI Communities - Summary of Unaudited Pro Forma Amounts of RSI Communities Acquisition (Details) Details 46 false false R47.htm 2420412 - Disclosure - Variable Interest Entities and Noncontrolling Interests - Narrative (Details) Sheet http://lyonhomes.com/role/VariableInterestEntitiesandNoncontrollingInterestsNarrativeDetails Variable Interest Entities and Noncontrolling Interests - Narrative (Details) Details http://lyonhomes.com/role/VariableInterestEntitiesandNoncontrollingInterests 47 false false R48.htm 2423413 - Disclosure - Investments in Unconsolidated Joint Ventures - Operations (Details) Sheet http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVenturesOperationsDetails Investments in Unconsolidated Joint Ventures - Operations (Details) Details 48 false false R49.htm 2424414 - Disclosure - Investments in Unconsolidated Joint Ventures - Narrative (Details) Sheet http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVenturesNarrativeDetails Investments in Unconsolidated Joint Ventures - Narrative (Details) Details 49 false false R50.htm 2425415 - Disclosure - Investments in Unconsolidated Joint Ventures - Financial Position (Details) Sheet http://lyonhomes.com/role/InvestmentsinUnconsolidatedJointVenturesFinancialPositionDetails Investments in Unconsolidated Joint Ventures - Financial Position (Details) Details 50 false false R51.htm 2428416 - Disclosure - Segment Information - Narrative (Details) Sheet http://lyonhomes.com/role/SegmentInformationNarrativeDetails Segment Information - Narrative (Details) Details 51 false false R52.htm 2429417 - Disclosure - Segment Information - Schedule of Segment Financial Information Relating to Operations (Details) Sheet http://lyonhomes.com/role/SegmentInformationScheduleofSegmentFinancialInformationRelatingtoOperationsDetails Segment Information - Schedule of Segment Financial Information Relating to Operations (Details) Details 52 false false R53.htm 2430418 - Disclosure - Segment Information - Schedule of Segment Homebuilding Assets (Details) Sheet http://lyonhomes.com/role/SegmentInformationScheduleofSegmentHomebuildingAssetsDetails Segment Information - Schedule of Segment Homebuilding Assets (Details) Details 53 false false R54.htm 2433419 - Disclosure - Real Estate Inventories - Summary of Real Estate Inventories (Details) Sheet http://lyonhomes.com/role/RealEstateInventoriesSummaryofRealEstateInventoriesDetails Real Estate Inventories - Summary of Real Estate Inventories (Details) Details 54 false false R55.htm 2436420 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Debt (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessScheduleofDebtDetails Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Debt (Details) Details 55 false false R56.htm 2437421 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Notes Payable, Senior Unsecured Facility, 5 3/4% and 8 1/2% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessScheduleofMaturitiesofNotesPayableSeniorUnsecuredFacility534and812SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Notes Payable, Senior Unsecured Facility, 5 3/4% and 8 1/2% Senior Notes (Details) Details 56 false false R57.htm 2438422 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Notes Payable (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessNotesPayableDetails Senior Notes, Secured, and Unsecured Indebtedness - Notes Payable (Details) Details 57 false false R58.htm 2439423 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Construction Notes Payable (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessScheduleofMaturitiesofConstructionNotesPayableDetails Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Construction Notes Payable (Details) Details 58 false false R59.htm 2440424 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Construction Notes Payable (Footnote) (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessScheduleofMaturitiesofConstructionNotesPayableFootnoteDetails Senior Notes, Secured, and Unsecured Indebtedness - Schedule of Maturities of Construction Notes Payable (Footnote) (Details) Details 59 false false R60.htm 2441425 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Maturities Narrative (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessMaturitiesNarrativeDetails Senior Notes, Secured, and Unsecured Indebtedness - Maturities Narrative (Details) Details 60 false false R61.htm 2442426 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - 5.75% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness575SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - 5.75% Senior Notes (Details) Details 61 false false R62.htm 2443427 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - 7% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness7SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - 7% Senior Notes (Details) Details 62 false false R63.htm 2444428 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - 6% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness6SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - 6% Senior Notes (Details) Details 63 false false R64.htm 2445429 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Summary of 6% Senior Notes Redemption Prices Percentage (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessSummaryof6SeniorNotesRedemptionPricesPercentageDetails Senior Notes, Secured, and Unsecured Indebtedness - Summary of 6% Senior Notes Redemption Prices Percentage (Details) Details 64 false false R65.htm 2446430 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - 5.875% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness5875SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - 5.875% Senior Notes (Details) Details 65 false false R66.htm 2447431 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - 6.625% Senior Notes (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtedness6625SeniorNotesDetails Senior Notes, Secured, and Unsecured Indebtedness - 6.625% Senior Notes (Details) Details 66 false false R67.htm 2448432 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Summary of 6.625% Senior Notes Redemption Prices Percentage (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessSummaryof6625SeniorNotesRedemptionPricesPercentageDetails Senior Notes, Secured, and Unsecured Indebtedness - Summary of 6.625% Senior Notes Redemption Prices Percentage (Details) Details 67 false false R68.htm 2449433 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Senior Notes Covenant Compliance (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessSeniorNotesCovenantComplianceDetails Senior Notes, Secured, and Unsecured Indebtedness - Senior Notes Covenant Compliance (Details) Details 68 false false R69.htm 2450434 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Balance Sheet (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessCondensedConsolidatingBalanceSheetDetails Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Balance Sheet (Details) Details 69 false false R70.htm 2451435 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Statement of Operations (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessCondensedConsolidatingStatementofOperationsDetails Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Statement of Operations (Details) Details 70 false false R71.htm 2452436 - Disclosure - Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Statement of Cash Flows (Details) Notes http://lyonhomes.com/role/SeniorNotesSecuredandUnsecuredIndebtednessCondensedConsolidatingStatementofCashFlowsDetails Senior Notes, Secured, and Unsecured Indebtedness - Condensed Consolidating Statement of Cash Flows (Details) Details 71 false false R72.htm 2455437 - Disclosure - Financial Services - Summary of Assets and Liabilities (Details) Sheet http://lyonhomes.com/role/FinancialServicesSummaryofAssetsandLiabilitiesDetails Financial Services - Summary of Assets and Liabilities (Details) Details 72 false false R73.htm 2456438 - Disclosure - Financial Services - Narrative (Details) Sheet http://lyonhomes.com/role/FinancialServicesNarrativeDetails Financial Services - Narrative (Details) Details 73 false false R74.htm 2457439 - Disclosure - Financial Services - Summary of Financial Services, Net (Details) Sheet http://lyonhomes.com/role/FinancialServicesSummaryofFinancialServicesNetDetails Financial Services - Summary of Financial Services, Net (Details) Details 74 false false R75.htm 2460440 - Disclosure - Fair Value of Financial Instruments - Schedule of Estimated Fair Values of Financial Instruments (Details) Sheet http://lyonhomes.com/role/FairValueofFinancialInstrumentsScheduleofEstimatedFairValuesofFinancialInstrumentsDetails Fair Value of Financial Instruments - Schedule of Estimated Fair Values of Financial Instruments (Details) Details 75 false false R76.htm 2462441 - Disclosure - Related Party Transactions - Narrative (Details) Sheet http://lyonhomes.com/role/RelatedPartyTransactionsNarrativeDetails Related Party Transactions - Narrative (Details) Details 76 false false R77.htm 2464442 - Disclosure - Income Taxes - Narrative (Details) Sheet http://lyonhomes.com/role/IncomeTaxesNarrativeDetails Income Taxes - Narrative (Details) Details 77 false false R78.htm 2467443 - Disclosure - Income Per Common Share - Schedule of Basic and Diluted Income Per Common Share Calculation (Details) Sheet http://lyonhomes.com/role/IncomePerCommonShareScheduleofBasicandDilutedIncomePerCommonShareCalculationDetails Income Per Common Share - Schedule of Basic and Diluted Income Per Common Share Calculation (Details) Details 78 false false R79.htm 2469444 - Disclosure - Stock Based Compensation - Narrative (Details) Sheet http://lyonhomes.com/role/StockBasedCompensationNarrativeDetails Stock Based Compensation - Narrative (Details) Details 79 false false R80.htm 2472445 - Disclosure - Commitments and Contingencies - Narrative (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies - Narrative (Details) Details 80 false false R81.htm 2473446 - Disclosure - Commitments and Contingencies - Land Banking Arrangements (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesLandBankingArrangementsDetails Commitments and Contingencies - Land Banking Arrangements (Details) Details 81 false false R82.htm 2474447 - Disclosure - Commitments and Contingencies - Summary of Lease Costs (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesSummaryofLeaseCostsDetails Commitments and Contingencies - Summary of Lease Costs (Details) Details 82 false false R83.htm 2475448 - Disclosure - Commitments and Contingencies - Weighted Average Remaining Lease Term (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesWeightedAverageRemainingLeaseTermDetails Commitments and Contingencies - Weighted Average Remaining Lease Term (Details) Details 83 false false R84.htm 2476449 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesScheduleofFutureMinimumPaymentsUnderNonCancelableOperatingLeasesDetails Commitments and Contingencies - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Details) Details 84 false false R85.htm 2477450 - Disclosure - Commitments and Contingencies - Schedule of Future Minimum Payments Under Finance Leases (Details) Sheet http://lyonhomes.com/role/CommitmentsandContingenciesScheduleofFutureMinimumPaymentsUnderFinanceLeasesDetails Commitments and Contingencies - Schedule of Future Minimum Payments Under Finance Leases (Details) Details 85 false false R86.htm 2479451 - Disclosure - Subsequent Events (Details) Sheet http://lyonhomes.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://lyonhomes.com/role/SubsequentEvents 86 false false All Reports Book All Reports wlh-20190930.htm wlh-20190930.xsd wlh-20190930_cal.xml wlh-20190930_def.xml wlh-20190930_lab.xml wlh-20190930_pre.xml wlh-9302019xex311.htm wlh-9302019xex312.htm wlh-9302019xex321.htm wlh-9302019xex322.htm http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/dei/2019-01-31 http://fasb.org/srt/2019-01-31 true true