Loans Payable and Other Borrowings Details Textual (Details) (USD $)
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3 Months Ended | ||||||
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Mar. 31, 2015
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Dec. 31, 2014
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Jul. 31, 2012
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Line of Credit Facility [Line Items] | |||||||
Proceeds from Long-term Lines of Credit | $ 100,000,000us-gaap_LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod | ||||||
Letters of Credit Outstanding, Amount | 19,712,000us-gaap_LettersOfCreditOutstandingAmount | 19,489,000us-gaap_LettersOfCreditOutstandingAmount | |||||
Line of Credit Facility, Remaining Borrowing Capacity | 453,300,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity | ||||||
Notes Payable, Other Payables [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum |
0.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMinimum / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
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Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum |
6.00%us-gaap_DebtInstrumentInterestRateStatedPercentageRateRangeMaximum / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
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Long-term Debt |
34,406,000us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
[1] |
30,722,000us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableOtherPayablesMember |
[1] | |||
Letter of Credit [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Line of Credit Facility, Maximum Borrowing Capacity |
200,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LetterOfCreditMember |
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Revolving Credit Facility [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Line of Credit Facility, Maximum Borrowing Capacity |
500,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
400,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
125,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
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Minimum Tangible Net Worth |
670,300,000mth_MinimumTangibleNetWorth / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
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Leverage ratio (as a percentage) |
60.00%mth_LeverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
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Interest Coverage Ratio |
1.5mth_InterestCoverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |
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Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Debt Instrument, Description of Variable Rate Basis | LIBOR | ||||||
Debt Instrument, Base Rate |
0.18%mth_DebtInstrumentBaseRate / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
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Debt Instrument, Basis Spread on Variable Rate |
2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
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Revolving Credit Facility [Member] | Prime Rate [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Debt Instrument, Description of Variable Rate Basis | Prime | ||||||
Debt Instrument, Base Rate |
3.25%mth_DebtInstrumentBaseRate / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |
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Debt Instrument, Basis Spread on Variable Rate |
1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |
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Revolving Credit Facility [Member] | Line of Credit [Member] | |||||||
Line of Credit Facility [Line Items] | |||||||
Long-term Debt |
$ 27,000,000us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember |
$ 0us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_LineOfCreditMember |
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- Definition
Debt Instrument, Base Rate No definition available.
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- Definition
As of any date, for the applicable period of the four quarters then ended, the ratio of (a) Consolidated EBITDA to (b) Consolidated Interest Incurred. No definition available.
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- Definition
Leverage Ratio No definition available.
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- Definition
Minimum Tangible Net Worth No definition available.
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- Definition
Percentage points added to the reference rate to compute the variable rate on the debt instrument. No definition available.
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- Definition
The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. No definition available.
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- Definition
Maximum contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Minimum contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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Maximum amount borrowed under the credit facility at any time during the period. No definition available.
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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