Acquisitions, Joint Ventures and Investments - Equity Method Investments (Detail) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016	Apr. 30, 2016
Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	[1],[2]	2008-09
Value of Investment		$ 27,419
Iconix Australia, LLC | Put / Call Options
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	[3],[4]	2013-09
Joint Venture Partner	[3],[4]	Pac Brands USA, Inc.
Iconix India
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	[4]	2012-06
Joint Venture Partner	[4]	Reliance Brands Ltd.
MG Icon
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	[4]	2010-03
Joint Venture Partner	[4]	Purim LLC
Galore Media, Inc.
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	[4],[5]	2016-04
Joint Venture Partner	[4],[5]	Various minority interest holders
Ownership by Iconix China			11.00%
Candies Shanghai Fashion Co., Ltd. | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed		Candie’s
Ownership by Iconix China		20.00%
Value of Investment		$ 10,641
Shanghai MuXiang Apparel & Accessory Co. Limited | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed		Marc Ecko
Ownership by Iconix China		15.00%
Value of Investment		$ 2,284
Bai Shi Kou International (Qingdao) Home Products Co. Ltd. | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed		Royal Velvet
Ownership by Iconix China		20.00%
Value of Investment		$ 383
Ningo Material Girl Fashion Co., Ltd | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed		Material Girl
Ownership by Iconix China		20.00%
Value of Investment		$ 3,193
Ai Xi Enterprise (Shanghai) Co. Limited | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed		Ecko Unltd
Ownership by Iconix China		20.00%
Value of Investment		$ 10,918

[1] During the year ended December 31, 2015, the Company purchased the remaining 50% interest in the entity, effectively increasing the Company’s ownership interest to 100%.

[2] Through our ownership of Iconix China Holdings Limited, we have equity interests in certain private companies. See the “Investments - Equity Method Investments” section below for further details of these investments. Additionally, as part of the Iconix China Holdings Limited acquisition, the Company acquired other assets which consist primarily of securities of a company publicly traded on the Hong Kong Stock Exchange. These assets are being accounted for as available-for-sale securities. As such, any increase or decrease in fair value is recorded within accumulated other comprehensive income and is not included on the Company’s consolidated statement of operations. Refer to Note 5 for further details on these securities.

[3] Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2015, as amended, for material terms of the put and call options associated with the Company’s joint venture.

[4] The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, that the joint venture is not a VIE and not subject to consolidation. The Company has recorded its investment under the equity method of accounting since inception.

[5] In April 2016, the Company entered into agreements with Galore Media, Inc. (Galore), a marketing company formed in FY 2015 and still in a development stage. Under the agreements, the Company purchased 50,050 shares of Series A Preferred Stock of Galore for $0.5 million and entered into arrangements pursuant to which the Company agreed to purchase up to an aggregate $0.5 million of marketing services from Galore in FY 2016. In connection with the marketing services arrangement, the Company received warrants that, as the Company purchases specified levels of marketing services, may be exercised for additional shares of Galore’s Series A Preferred Stock at a nominal exercise price. The Series A Preferred Stock carries voting rights, and the holders of the Series A Preferred Stock have the collective right to appoint one of five members of the Board of Directors as long as there are at least 48,000 Series A Preferred Shares outstanding. Given these arrangements, the Company has an investment of approximately 11% of the equity of Galore.