Joint Ventures to Develop and Market Company's Brands (Detail)	12 Months Ended
	Dec. 31, 2017
Umbro China
Business Acquisition [Line Items]
Date Created	2016-07
Iconix’s Investment	95.00%
Danskin China
Business Acquisition [Line Items]
Date Created	2016-10	[1]
Iconix’s Investment	100.00%	[1]

[1] In October 2016, the Company formed the Danskin China Limited as a wholly-owned indirect subsidiary to hold the Danskin trademarks and related assets in respect of mainland China and Macau. The Company entered into an agreement with Li-Ning (China) Sports Goods Co., Ltd. who will purchase up to a 50% interest (and no less than a 30% interest) in Danskin China Limited. The purchase of the equity interest is expected to occur over a three-year period commencing on March 31, 2019. Refer to Note 4 for further details. As of December 31, 2017, the Company’s ownership interest in Danskin China Limited was 100%.