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Acquisitions (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Net Loss attributable to MDC Partners Inc. | $ (24,548) | $ (14,496) | $ (20,114) | $ (26,281) | $ (57,740) | $ (19,574) | $ 1,325 | $ (8,685) | $ (85,439) | $ (84,674) | $ (15,440)
Transfers (to) from the noncontrolling interest |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in MDC Partners Inc. paid-in capital for purchase of equity interests in excess of Redeemable Noncontrolling Interests |  |  |  |  |  |  |  |  | 743 | (6,328) | (7,761)
Increase in MDC Partners Inc. paid-in capital for purchase of equity interests in excess of noncontrolling interests. |  |  |  |  |  |  |  |  | 12,410 | 0 | 0
Increase (Decrease) in MDC Partners Inc. paid in capital from issuance of equity interests |  |  |  |  |  |  |  |  | 767 | (1,147) | 158
Net transfers to (from) noncontrolling interests |  |  |  |  |  |  |  |  | 13,920 | (7,475) | (7,603)
Change from net loss attributable to MDC Partners Inc. and transfers from (to) noncontrolling interest |  |  |  |  |  |  |  |  | $ (71,519) | $ (92,149) | $ (23,043)

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