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Acquisitions (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Noncontrolling Interest [Line Items] |  |
Net loss attributable to MDC Partners Inc. | $ (8,846) | $ (43,158)
Transfers to the noncontrolling interest: |  |
Increase (Decrease) in MDC Partners Inc. paid-in capital for purchase of equity interests in excess of Redeemable Noncontrolling Interests and Noncontrolling Iinterests | (4,798) | (1,059)
Net transfers to noncontrolling interest | (4,798) | (1,059)
Change from net loss attributable to MDC Partners Inc. and transfers to noncontrolling interest | $ (13,644) | $ (44,217)

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