Unaudited Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss) from continuing operations	$ 21,711	$ (580,813)	$ (22,811)	$ (583,564)
Other comprehensive (loss) income:
Foreign currency translation (loss) gain	(729)	6,353	(3,509)	20,900
Change in fair value of available for sale securities		46		(625)
Total other comprehensive (loss) income	(729)	6,399	(3,509)	20,275
Comprehensive (loss) income	20,982	(574,414)	(26,320)	(563,289)
Less: comprehensive income (loss) attributable to non-controlling interest from continuing operations	1,487	(30,242)	8,635	(23,857)
Comprehensive income (loss) from continuing operations attributable to Iconix Brand Group, Inc.	$ 19,495	$ (544,172)	$ (34,955)	$ (539,432)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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