Acquisition of Brands (Detail)	12 Months Ended
	Dec. 31, 2016
Strawberry Shortcake
Business Acquisition [Line Items]
Date Acquired	2015-03
Brand	Strawberry Shortcake
NGX LLC
Business Acquisition [Line Items]
Date Acquired	2014-11
Brand	Nick Graham
Iconix’s Investment	51.00%
Hydraulic IP Holdings
Business Acquisition [Line Items]
Date Acquired	2014-12
Brand	Hydraulic
Iconix’s Investment	51.00%
US PONY Holdings, LLC
Business Acquisition [Line Items]
Date Acquired	2015-02
Brand	PONY
Iconix’s Investment	75.00%