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Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Deferred Acquisition Consideration, Fixed Payments | $ 1,651 | $ 7,464
Business Acquisition, Contingent Consideration Potential Cash Payment, Total | $ 196,446 | $ 137,223

X
- Definition The aggregate amount of deferred acquisition consideration as of the reporting date. + References No definition available. + Details
Name: | mdca_BusinessAcquisitionContingentConsiderationPotentialCashPaymentTotal
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The additional amount paid towards Deferred acquisition consideration. + References No definition available. + Details
Name: | mdca_DeferredAcquisitionConsiderationFixedPayments
Namespace Prefix: | mdca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant