UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue:
Services	$ 328,791	$ 326,968
Operating expenses:
Cost of services sold	237,153	243,030
Office and general expenses	67,118	83,879
Depreciation and amortization	8,838	12,375
Other asset impairment	0	2,317
Costs and Expenses, Total	313,109	341,601
Operating income (loss)	15,682	(14,633)
Other income (expense):
Interest expense and finance charges, net	(16,760)	(16,083)
Other, net	(3,383)	441
Foreign exchange transaction gain (loss)	5,442	(6,660)
Nonoperating Income (Expense), Total	(14,701)	(22,302)
Income (loss) before income taxes and equity in earnings of non-consolidated affiliates	981	(36,935)
Income tax expense (benefit)	748	(8,330)
Income (loss) before equity in earnings of non-consolidated affiliates	233	(28,605)
Equity in earnings of non-consolidated affiliates	83	86
Net income (loss)	316	(28,519)
Net income attributable to the noncontrolling interests	(429)	(897)
Net loss attributable to MDC Partners Inc.	(113)	(29,416)
Accretion on convertible preference shares	(2,383)	(2,027)
Net loss attributable to MDC Partners Inc. common shareholders	$ (2,496)	$ (31,443)
Basic and diluted
Earnings Per Share, Basic	$ (0.04)	$ (0.56)
Earnings Per Share, Diluted	$ (0.04)	$ (0.56)
Weighted Average Number of Common Shares Outstanding:
Weighted Average Number of Shares Outstanding, Basic	60,258,102	56,415,042
Weighted Average Number of Shares Outstanding, Diluted	60,258,102	56,415,042
Stock-based compensation	$ 2,972	$ 5,037
Cost of services sold
Weighted Average Number of Common Shares Outstanding:
Stock-based compensation	4,545	3,347
Office and general expenses
Weighted Average Number of Common Shares Outstanding:
Stock-based compensation	$ (1,573)	$ 1,690