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Operating and Reporting Segments (Details) (USD $)
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3 Months Ended |
12 Months Ended |
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Dec. 31, 2014
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Sep. 30, 2014
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Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Sep. 30, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Segment Reporting Information [Line Items] |
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| Land closing revenue |
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$ 27,252,000us-gaap_LandSales
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$ 31,270,000us-gaap_LandSales
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$ 9,314,000us-gaap_LandSales
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| Revenue |
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| Revenue |
698,918,000us-gaap_RealEstateRevenueNet
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556,776,000us-gaap_RealEstateRevenueNet
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505,604,000us-gaap_RealEstateRevenueNet
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408,345,000us-gaap_RealEstateRevenueNet
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536,194,000us-gaap_RealEstateRevenueNet
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492,080,000us-gaap_RealEstateRevenueNet
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449,950,000us-gaap_RealEstateRevenueNet
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336,435,000us-gaap_RealEstateRevenueNet
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2,169,643,000us-gaap_RealEstateRevenueNet
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1,814,659,000us-gaap_RealEstateRevenueNet
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1,193,674,000us-gaap_RealEstateRevenueNet
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| Segment operating income |
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| Total homebuilding segment operating income |
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224,522,000us-gaap_OperatingIncomeLoss
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[1] |
209,408,000us-gaap_OperatingIncomeLoss
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[1] |
77,800,000us-gaap_OperatingIncomeLoss
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| Financial services segment profit |
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16,178,000mth_FinancialServicesOperatingProfit
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15,954,000mth_FinancialServicesOperatingProfit
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10,255,000mth_FinancialServicesOperatingProfit
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| Corporate and unallocated costs |
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(33,245,000)mth_CorporateAndUnallocatedIncomeExpense
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(31,216,000)mth_CorporateAndUnallocatedIncomeExpense
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(22,619,000)mth_CorporateAndUnallocatedIncomeExpense
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| Loss from other unconsolidated entities, net |
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(447,000)mth_EarningsFromOtherUnconsolidatedEntitiesNet
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(378,000)mth_EarningsFromOtherUnconsolidatedEntitiesNet
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(224,000)mth_EarningsFromOtherUnconsolidatedEntitiesNet
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| Interest expense |
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(5,163,000)us-gaap_InterestExpense
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(15,092,000)us-gaap_InterestExpense
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(24,244,000)us-gaap_InterestExpense
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| Loss on early extinguishment of debt |
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0us-gaap_GainsLossesOnExtinguishmentOfDebt
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(3,796,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
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(5,772,000)us-gaap_GainsLossesOnExtinguishmentOfDebt
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| Other income/(loss), net |
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6,572,000us-gaap_OtherNonoperatingIncomeExpense
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2,792,000us-gaap_OtherNonoperatingIncomeExpense
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(6,342,000)us-gaap_OtherNonoperatingIncomeExpense
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| Earnings before income taxes |
66,393,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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47,030,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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55,236,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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39,758,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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65,879,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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56,786,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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38,532,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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16,475,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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208,417,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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177,672,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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28,854,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
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| West [Member] |
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| Segment Reporting Information [Line Items] |
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| Land closing revenue |
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11,155,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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11,616,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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6,488,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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| Revenue |
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| Revenue |
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920,244,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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937,050,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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600,227,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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| Segment operating income |
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| Total homebuilding segment operating income |
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102,640,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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131,352,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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44,727,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_WestMember
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| Central [Member] |
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| Segment Reporting Information [Line Items] |
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| Land closing revenue |
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8,603,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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16,184,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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2,036,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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| Revenue |
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| Revenue |
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692,320,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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508,961,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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392,678,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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| Segment operating income |
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| Total homebuilding segment operating income |
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75,372,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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38,499,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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17,790,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_CentralMember
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| East [Member] |
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| Segment Reporting Information [Line Items] |
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| Land closing revenue |
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7,494,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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3,470,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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790,000us-gaap_LandSales
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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| Revenue |
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| Revenue |
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557,079,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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368,648,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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200,769,000us-gaap_RealEstateRevenueNet
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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| Segment operating income |
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| Total homebuilding segment operating income |
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$ 46,510,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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$ 39,557,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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$ 15,283,000us-gaap_OperatingIncomeLoss
/ us-gaap_StatementGeographicalAxis
= mth_EastMember
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