Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Reconciliation of Weighted Average Shares Used in Calculating Basic and Diluted Earnings Per Share

A reconciliation of weighted average shares used in calculating basic and diluted earnings per share follows:

	For the Three Months Ended March 31,
(in thousands)	2020		2019
Basic		11,772		8,465
Effect of convertible notes subject    to conversion		—		36,269
Effect of assumed vesting of dilutive shares		—		52
Diluted		11,772		44,786

Schedule of Impact on Earnings Per Share Calculation

	For the Three Months Ended March 31,
	2020			2019
For earnings (loss) per share - basic:
Net income attributable to Iconix Brand    Group, Inc.	$	(21,483	)	$	17,945
Accretion of redeemable non-controlling    interest		(394	)		—
Net income attributable to Iconix Brand    Group, Inc. after the effect of accretion of    redeemable non-controlling interest for    basic earnings (loss) per share	$	(21,877	)	$	17,945
For earnings (loss) per share - diluted:
Net income attributable to Iconix Brand    Group, Inc.	$	(21,483	)	$	17,945
Effect of potential conversion of 5.75%    Convertible Notes		—			(18,244	)
Accretion of redeemable non-controlling    interest		(394	)		—
Net income attributable to Iconix Brand    Group, Inc. after the effect of potential    conversion of 5.75% Convertible Notes    for diluted earnings (loss) per share	$	(21,877	)	$	(299	)
Earnings (loss) per share:
Basic	$	(1.86	)	$	2.12
Diluted	$	(1.86	)	$	(0.01	)
Weighted average number of common shares    outstanding:
Basic		11,772			8,465
Diluted		11,772			44,786