Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 23,121	$ 69,045
Other comprehensive income (loss):
Foreign currency translation gain (loss)	12,541	(37,736)
Change in fair value of available for sale securities	(2,037)
Total other comprehensive income (loss)	10,504	(37,736)
Comprehensive income	33,625	31,309
Less: comprehensive income attributable to non-controlling interest	4,505	3,687
Comprehensive income attributable to Iconix Brand Group, Inc.	$ 29,120	$ 27,622