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Accrued and Other Liabilities - Textual (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accrued Liabilities and Other Liabilities [Abstract]        
Accrued media cost, current $ 168,508,000mdca_AccruedMediaCostCurrent $ 144,161,000mdca_AccruedMediaCostCurrent    
Trust liabilities 6,419,000us-gaap_OtherLiabilities 0us-gaap_OtherLiabilities    
Accrued and Other Liabilities Attributable To Noncontrolling Interest $ 6,014,000mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest $ 5,210,000mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest $ 3,624,000mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest $ 4,049,000mdca_AccruedAndOtherLiabilitiesAttributableToNoncontrollingInterest