Fair Value Measurements (Details Textual) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Fair Value Disclosures [Abstract]
Deferred Acquisition Consideration, Fixed Payments	$ 35,898	$ 2,065
Business Acquisition, Contingent Consideration Potential Cash Payment, Total	$ 209,916	$ 153,913

The aggregate amount of deferred acquisition consideration as of the reporting date.

No definition available.

Name:	mdca_BusinessAcquisitionContingentConsiderationPotentialCashPaymentTotal
Namespace Prefix:	mdca_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant