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Accruals and Other Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Accrued and Other Liabilities [Abstract]    
Beginning balance $ 6,014mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest $ 5,210mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest
Income attributable to noncontrolling interests 2,380mdca_IncomePayableToNoncontrollingInterests 6,890mdca_IncomePayableToNoncontrollingInterests
Distributions made (2,839)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders (6,523)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
Cumulative translation adjustments   437us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax
Other (116)mdca_AdjustmentsToNoncontrollingInterest  
Ending balance $ 5,439mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest $ 6,014mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest