2.4.0.8130 - Disclosure - Common and Common Equivalent Shares - Schedule of Calculation of Shares Used in Basic and Diluted Net Income Per Share (Detail)truefalseIn Thousands, unless otherwise specifiedfalse1false falsefalseeol_PE10840---1310-Q0007_STD_91_20130630_0http://www.sec.gov/CIK0000893949duration2013-04-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares02false falsefalseeol_PE10840---1310-Q0007_STD_91_20120630_0http://www.sec.gov/CIK0000893949duration2012-04-01T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares03false falsefalseeol_PE10840---1310-Q0007_STD_181_20130630_0http://www.sec.gov/CIK0000893949duration2013-01-01T00:00:002013-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares04false falsefalseeol_PE10840---1310-Q0007_STD_182_20120630_0http://www.sec.gov/CIK0000893949duration2012-01-01T00:00:002012-06-30T00:00:00sharesStandardhttp://www.xbrl.org/2003/instanceshares01true 1us-gaap_EarningsPerShareAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Earnings Per Share [Abstract]2false 2us-gaap_WeightedAverageNumberOfSharesOutstandingBasicus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalsepositiveLabel1truefalsefalse4955800049558falsefalsefalse2truefalsefalse4854300048543falsefalsefalse3truefalsefalse4943400049434falsefalsefalse4truefalsefalse4840800048408falsefalsefalsexbrli:sharesItemTypesharesNumber 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.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 false1Weighted average number of common shares outstanding3false 2us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangementsus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse991000991falsefalsefalse2truefalsefalse10020001002falsefalsefalse3truefalsefalse10370001037falsefalsefalse4truefalsefalse10660001066falsefalsefalsexbrli:sharesItemTypesharesAdditional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 false1Weighted average number of dilutive common share equivalents4false 2us-gaap_WeightedAverageNumberOfDilutedSharesOutstandingus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalsetotalLabel1truefalsefalse5054900050549falsefalsefalse2truefalsefalse4954500049545falsefalsefalse3truefalsefalse5047100050471falsefalsefalse4truefalsefalse4947400049474falsefalsefalsexbrli:sharesItemTypesharesThe 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.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 true1Weighted average number of common and common equivalent shares outstanding5false 2us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmountus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse6900069falsefalsefalse2truefalsefalse4000040falsefalsefalse3truefalsefalse3400034falsefalsefalse4truefalsefalse3400034falsefalsefalsexbrli:sharesItemTypesharesSecurities (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.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 false1Antidilutive securities not included in the dilutive earnings per share calculationfalseCommon and Common Equivalent Shares - Schedule of Calculation of Shares Used in Basic and Diluted Net Income Per Share (Detail)UnKnownThousandsUnKnownUnKnowntruefalsefalseSheethttp://www.mednax.com/taxonomy/role/DisclosureCommonAndCommonEquivalentSharesScheduleOfCalculationOfSharesUsedInBasicAndDilutedNetIncomePerShare45