Joint Ventures and Investments - Consolidated Joint Ventures (Detail)		3 Months Ended
		Mar. 31, 2020		Jul. 31, 2019
Lee Cooper China Limited
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2018-06
Company ownership interest		100.00%
Joint Venture Partner		POS Lee Cooper HK Co. Ltd.
Starter China Limited
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2018-03
Company ownership interest		100.00%
Joint Venture Partner		Photosynthesis Holdings Co. Ltd.
Danskin China Limited
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2016-10
Company ownership interest		100.00%
Joint Venture Partner		Li-Ning (China) Sports Goods Co. Ltd.
Umbro China Limited
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2016-07
Company ownership interest		100.00%	[1]	100.00%
Joint Venture Partner		Hong Kong MH Umbro International Co. Ltd.
US Pony Holdings, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2015-02
Company ownership interest		75.00%
Joint Venture Partner		Anthony L&S Athletics, LLC
Iconix Australia | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[2],[3]	2013-09
Company ownership interest	[2],[3]	55.00%
Joint Venture Partner	[2],[3]	Pac Brands USA, Inc.
Hardy Way, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment		2009-05
Company ownership interest		85.00%
Joint Venture Partner		Donald Edward Hardy
Variable Interest Entity, Primary Beneficiary | Iconix MENA Ltd | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[2],[3]	2014-12
Company ownership interest	[2],[3]	55.00%
Joint Venture Partner	[2],[3]	Global Brands Group Asia Limited
Variable Interest Entity, Primary Beneficiary | Iconix Israel, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[3]	2013-11
Iconix's Ownership %	[3]	50.00%
Joint Venture Partner	[3]	MGS
Variable Interest Entity, Primary Beneficiary | Iconix Europe LLC | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[2],[3]	2009-12
Company ownership interest	[2],[3]	51.00%
Joint Venture Partner	[2],[3]	Global Brands Group Asia Limited
Variable Interest Entity, Primary Beneficiary | Buffalo Brand Joint Venture
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[3]	2013-02
Company ownership interest	[3]	51.00%
Joint Venture Partner	[3]	Buffalo International
Variable Interest Entity, Primary Beneficiary | Diamond Icon
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[3]	2013-03
Company ownership interest	[3]	51.00%
Joint Venture Partner	[3]	Albion Agencies Ltd.
Variable Interest Entity, Primary Beneficiary | Icon Modern Amusement, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	[3]	2012-12
Company ownership interest	[3]	51.00%
Joint Venture Partner	[3]	Dirty Bird Productions

[1] In July 2019, pursuant to the operating agreement, the Company reacquired the remaining 5% ownership interest in Umbro China from MHMC, its joint venture partner, for approximately $1.3 million. As a result of this transaction, the Company now maintains 100% ownership interest in Umbro China. In April of 2020, the Company announced that it had entered into an agreement to sell its interests in the entity to HK Qiaodan International Limited for approximately $62.5 million. The transaction is anticipated to close on or before September 15, 2020.

[2] Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 for material terms of the put/call options associated with certain of the Company’s joint ventures.

[3] 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, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity.