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Note 21 - Stock Based Compensation (Details) (USD $)
 12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mar. 08, 2012
Note 21 - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share) $ 7.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue [1] $ 9.75us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue [1] $ 7.54us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue [1]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) 257,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross [1] 237,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross [1] 1,382,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross [1]  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 1,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue $ 7,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options 2,700,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions      
Employee Stock Option [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense 3,300,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 5,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 10,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense 1,300,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 2,200,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 36 days      
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options 0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 400,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 1,700,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		  
Performance Shares [Member] | 2011 Equity Incentive Plan [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense     6,200,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_PlanNameAxis
= mdc_EquityIncentivePlan2011Member		  
Restricted Stock [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Allocated Share-based Compensation Expense 2,700,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 4,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 5,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		  
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense 1,000,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 1,600,000us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 0us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 36 days      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 3,400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Intrinsic Value, Amount Per Share (in Dollars per share) $ 4,700,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Intrinsic Value, Amount Per Share (in Dollars per share) $ 4,200,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 $ 5,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		 $ 5,900,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodIntrinsicValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockMember		  
Minimum [Member] | Non-Executives [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Annual Forfeiture Rate 30.00%mdc_AnnualForfeitureRate
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_TitleOfIndividualAxis
= mdc_NonExecutivesMember		      
Maximum [Member] | Non-Executives [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Annual Forfeiture Rate 45.00%mdc_AnnualForfeitureRate
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_TitleOfIndividualAxis
= mdc_NonExecutivesMember		      
Executives [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Annual Forfeiture Rate 0.00%mdc_AnnualForfeitureRate
/ us-gaap_TitleOfIndividualAxis
= mdc_ExecutivesMember		      
Director [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Annual Forfeiture Rate 0.00%mdc_AnnualForfeitureRate
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember		      
CEO and COO [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)     1,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_TitleOfIndividualAxis
= mdc_CEOAndCOOMember		  
Chief Executive Officer [Member] | 2011 Equity Incentive Plan [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)       500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= mdc_EquityIncentivePlan2011Member
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefExecutiveOfficerMember
Chief Operating Officer [Member] | 2011 Equity Incentive Plan [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)       500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_PlanNameAxis
= mdc_EquityIncentivePlan2011Member
/ us-gaap_TitleOfIndividualAxis
= us-gaap_ChiefOperatingOfficerMember
2011 Equity Incentive Plan [Member]        
Note 21 - Stock Based Compensation (Details) [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)       7.42us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_PlanNameAxis
= mdc_EquityIncentivePlan2011Member
[1] Total shares granted in 2012 include 1,000,000 performance based options granted to our CEO and COO. See further discussion regarding these grants in the "Performance Based Stock Award Activity" section below.