Variable Interest Entities and Consolidated Real Estate Not Owned (Details) (USD $) In Thousands, unless otherwise specified
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Dec. 31, 2014
Lot
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Dec. 31, 2013
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Summary of lots under option or contract |
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Number of lots of Option contracts recorded on balance sheet as Real estate not owned |
70mth_NumberOfLotsUnderOptionContractsRecorded
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Purchase Price of Option contracts recorded on balance sheet as Real estate not owned |
$ 4,999us-gaap_LandUnderPurchaseOptionsRecorded
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$ 289us-gaap_LandUnderPurchaseOptionsRecorded
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Option/Earnest money Deposits Cash Option contracts recorded on balance sheet as Real estate not owned |
700mth_DepositAssetsOnRecordedRealEstateNotOwned
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Number of lots not recorded |
15,014mth_NumberOfLotsUnderOptionOrContractsNotRecorded
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[1] |
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Purchase price not recorded |
928,128us-gaap_LandUnderPurchaseOptionsNotRecorded
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[1] |
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Option/Earnest Money Deposits Cash |
94,989us-gaap_DepositAssets
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51,595us-gaap_DepositAssets
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Number of lots recorded and unrecorded |
15,084mth_NumberOfLotsUnderOptionOrContracts
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Purchase Price recorded and unrecorded |
933,127mth_LandUnderPurchaseOptionsRecordedAndUnrecorded
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Option/Earnest Money Deposits Cash recorded and unrecorded |
95,689mth_AggregateDepositAssets
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Option Contracts Not Recorded On Balance Sheet Non Refundable Deposits Committed [Member] [Member] |
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Summary of lots under option or contract |
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Number of lots not recorded |
7,256mth_NumberOfLotsUnderOptionOrContractsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Purchase price not recorded |
589,229us-gaap_LandUnderPurchaseOptionsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Option/Earnest Money Deposits Cash |
76,197us-gaap_DepositAssets / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Purchase Contracts Not Recorded On Balance Sheet Non Refundable Deposits Committed [Member] [Member] |
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Summary of lots under option or contract |
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Number of lots not recorded |
2,665mth_NumberOfLotsUnderOptionOrContractsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Purchase price not recorded |
137,095us-gaap_LandUnderPurchaseOptionsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Option/Earnest Money Deposits Cash |
13,888us-gaap_DepositAssets / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsNotRecordedOnBalanceSheetNonRefundableDepositsCommittedMemberMember
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Purchase Contracts not recorded on balance sheet Refundable Deposits Committed [Member] |
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Summary of lots under option or contract |
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Number of lots not recorded |
631mth_NumberOfLotsUnderOptionOrContractsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsnotrecordedasrefundabledepositscommittedMember
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Purchase price not recorded |
23,361us-gaap_LandUnderPurchaseOptionsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsnotrecordedasrefundabledepositscommittedMember
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Option/Earnest Money Deposits Cash |
1,349us-gaap_DepositAssets / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_PurchaseContractsnotrecordedasrefundabledepositscommittedMember
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Total committed (on and off balance sheet) [Member] |
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Summary of lots under option or contract |
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Number of lots recorded and unrecorded |
10,622mth_NumberOfLotsUnderOptionOrContracts / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_CommittedMember
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Purchase Price recorded and unrecorded |
754,684mth_LandUnderPurchaseOptionsRecordedAndUnrecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_CommittedMember
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Option/Earnest Money Deposits Cash recorded and unrecorded |
92,134mth_AggregateDepositAssets / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_CommittedMember
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Option and Purchase contracts not recorded on balance sheet - refundable deposits, uncommitted [Member] |
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Summary of lots under option or contract |
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Number of lots not recorded |
4,462mth_NumberOfLotsUnderOptionOrContractsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionAndPurchaseContractsNotRecordedOnBalanceSheetRefundableDepositsUncommittedMember
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Purchase price not recorded |
178,443us-gaap_LandUnderPurchaseOptionsNotRecorded / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionAndPurchaseContractsNotRecordedOnBalanceSheetRefundableDepositsUncommittedMember
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Option/Earnest Money Deposits Cash |
$ 3,555us-gaap_DepositAssets / mth_OptionContractsAndRealEstateNotOwnedAxis = mth_OptionAndPurchaseContractsNotRecordedOnBalanceSheetRefundableDepositsUncommittedMember
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