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Discontinued Operations (Details) - USD ($)	3 Months Ended
Discontinued Operations (Details) - USD ($)	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	May. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net loss from discontinued operations attributable to MDC Partners Inc., net of taxes	$ 0	$ (6,294,000)
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration				$ 0
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		15,524,000
Operating loss		(1,552,000)
Other expense		(72,000)
Loss on disposal		(4,670,000)
Net loss from discontinued operations attributable to MDC Partners Inc., net of taxes		$ (6,294,000)
Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Assets			$ 0