Unaudited Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 19,799	$ (954)	$ 59,992	$ 87,046
Other comprehensive income (loss):
Foreign currency translation gain (loss)	3,000	4,051	7,955	(26,560)
Change in fair value of available for sale securities	47	(948)	(2,179)	(650)
Total other comprehensive income (loss)	3,047	3,103	5,776	(27,210)
Comprehensive income	22,846	2,149	65,768	59,836
Less: comprehensive income attributable to non-controlling interest	4,583	4,433	14,580	13,335
Comprehensive income (loss) attributable to Iconix Brand Group, Inc.	$ 18,263	$ (2,284)	$ 51,188	$ 46,501