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Note 13 - Deferred Compensation Retirement Plans (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Oct. 20, 2014
Note 13 - Deferred Compensation Retirement Plans (Details) [Line Items]      
Deferred Tax Assets, Valuation Allowance $ 13,027,000us-gaap_DeferredTaxAssetsValuationAllowance $ 14,669,000us-gaap_DeferredTaxAssetsValuationAllowance  
Termination of Retirement Benefits [Member]      
Note 13 - Deferred Compensation Retirement Plans (Details) [Line Items]      
Deferred Tax Assets, Valuation Allowance   11,900,000us-gaap_DeferredTaxAssetsValuationAllowance
/ us-gaap_ValuationAllowanceByDeferredTaxAssetAxis
= mdc_TerminationOfRetirementBenefitsMember		  
Chairman Of The Board And Chief Executive Officer [Member]      
Note 13 - Deferred Compensation Retirement Plans (Details) [Line Items]      
Deferred Compensation Arrangement with Individual, Distributions Paid     14,800,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid
/ us-gaap_TitleOfIndividualAxis
= mdc_CharmanOfTheBoardAndChiefExecutiveOfficerMember
President And Chief Operating Officer [Member]      
Note 13 - Deferred Compensation Retirement Plans (Details) [Line Items]      
Deferred Compensation Arrangement with Individual, Distributions Paid     $ 16,000,000us-gaap_DeferredCompensationArrangementWithIndividualDistributionsPaid
/ us-gaap_TitleOfIndividualAxis
= mdc_PresidentAndChiefOperatingOfficerMember