CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation	$ 5,228	$ 3,266	$ 15,443	$ 13,025
Revenue:
Services	349,254	328,415	995,343	967,243
Operating Expenses:
Cost of services sold	235,659	212,925	675,940	648,386
Office and general expenses	83,303	78,786	233,840	206,169
Depreciation and amortization	11,412	13,086	34,068	39,393
Goodwill, Impairment Loss	29,631	0	29,631	0
Costs and Expenses, Total	360,005	304,797	973,479	893,948
Operating profit	(10,751)	23,618	21,864	73,295
Other Income (Expense):
Other, net	(6,008)	(15,623)	9,530	(29,315)
Interest expense and finance charges	(16,540)	(14,638)	(49,289)	(43,022)
Loss on redemption of notes	0	0	(33,298)	0
Interest income	218	114	599	338
Nonoperating Income (Expense), Total	(22,330)	(30,147)	(72,458)	(71,999)
Loss from continuing operations before income taxes and equity in earnings of non-consolidated affiliates	(33,081)	(6,529)	(50,594)	1,296
Income tax benefit	(540)	(1,191)	1,893	(566)
Loss from continuing operations before equity in earnings of non-consolidated affiliates	(32,541)	(5,338)	(52,487)	1,862
Equity in earnings of non-consolidated affiliates	70	172	9	627
Income from continuing operations	(32,471)	(5,166)	(52,478)	2,489
Loss from discontinued operations attributable to MDC Partners Inc., net of taxes	0	(1,316)	0	(6,281)
Net loss	(32,471)	(6,482)	(52,478)	(3,792)
Net income attributable to the noncontrolling interests	(1,059)	(2,122)	(3,172)	(7,343)
Net loss attributable to MDC Partners Inc.	$ (33,530)	$ (8,604)	$ (55,650)	$ (11,135)
Basic and Diluted
Loss from continuing operations attributable to MDC Partners Inc. common shareholders (usd per share)	$ (0.64)	$ (0.15)	$ (1.09)	$ (0.10)
Discontinued operations attributable to MDC Partners Inc. common shareholders (usd per share)	0.00	(0.02)	0.00	(0.12)
Net loss attributable to MDC Partners Inc. common shareholders (usd per share)	(0.64)	(0.17)	(1.09)	(0.22)
Income (Loss) from Continuing Operations, Per Diluted Share	$ (0.64)	$ (0.15)	$ (1.09)	$ (0.10)
Weighted Average Number of Common Shares Outstanding:
Basic (USD per share)	52,244,819	49,915,807	50,861,890	49,843,980
Diluted (USD per share)	52,244,819	49,915,807	50,861,890	49,843,980
Cost of Sales [Member]
Share-based Compensation	$ 3,026	$ 1,727	$ 10,393	$ 8,415
General and Administrative Expense [Member]
Share-based Compensation	$ 2,202	$ 1,539	$ 5,050	$ 4,610