Income (Loss) Per Common Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share

The following table sets forth the computation of basic and diluted income (loss) per common share:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Numerator:
Net income (loss) attributable to MDC Partners Inc.	$	4,076	$	(1,752)	$	4,486	$	2,425
Accretion on convertible preference shares	(3,579)		(3,306)		(10,528)		(8,931)
Net income allocated to convertible preference shares	(137)		—		—		—
Net income (loss) attributable to MDC Partners Inc. common shareholders	$	360	$	(5,058)	$	(6,042)	$	(6,506)
Denominator:
Basic weighted average number of common shares outstanding	73,207,619		72,044,480		72,713,257		68,154,306
Dilutive effect of equity awards	269,160		—		—		—
Diluted weighted average number of common shares outstanding	73,476,779		72,044,480		72,713,257		68,154,306
Basic	$	—	$	(0.07)	$	(0.08)	$	(0.10)
Diluted	$	—	$	(0.07)	$	(0.08)	$	(0.10)