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Fair Value Measurements (Details Textual) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Fair Value Disclosures [Abstract] |  |
Deferred Acquisition Consideration, Fixed Payments | $ 39,457 | $ 33,141
Business Acquisition, Contingent Consideration Potential Cash Payment, Total | $ 291,727 | $ 205,368

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

X
- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration