Gains on Sale of Trademarks, Net - Additional Information (Detail) $ in Thousands, ₩ in Billions		1 Months Ended				3 Months Ended		6 Months Ended		9 Months Ended
		Sep. 30, 2016 USD ($)	Apr. 30, 2016 USD ($)	Feb. 29, 2016 USD ($)	Jan. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 KRW (₩)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks						$ 147	$ 0			$ 9,991	$ 0
BBC and Ice Cream brands
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Proceeds from sale of interest					$ 3,500					3,500
Net gains (losses) on sale of trademarks	[1]									(593)
Badgley Mischka Intellectual Property / MJCLK Apparel License
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Proceeds from sale of rights				$ 13,800						14,000
Badgley Mischka Intellectual Property / MJCLK Apparel License | United States
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks										11,600
Badgley Mischka Intellectual Property and Related Assets | Foreign Territories
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks										300
Badgley Mischka Intellectual Property and Related Assets
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	[2]									11,812
Ed Hardy China Trademark
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	[3]									(1,950)
Proceeds from sale of rights			$ 11,400
London Fog Korea trademark
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	[4]									575
Proceeds from sale of rights								$ 1,000	₩ 1.1
Interest in Badgley Mischka China trademark
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Proceeds from sale of interest		$ 1,200
Net gains (losses) on sale of trademarks	[5]					$ 147				$ 147

[1] In January 2016, the Company sold its interest in the BBC and Ice Cream brands for $3.5 million in cash. The Company recognized a loss of $0.6 million as a result of this transaction.

[2] In February 2016, the Company sold its rights to the Badgley Mischka intellectual property and related assets to Titan Industries, Inc. in partnership with the founders, Mark Badgley and James Mischka, and the apparel licensee MJCLK LLC for $13.8 million in cash. The Company recognized a gain of $11.6 million as a result of this transaction. The $11.6 million gain represented the sale of the Badgley Mischka intellectual property and related assets within the United States, Greater China, Israel and Latin American territories. The Badgley Mischka intellectual property and related assets within other foreign territories is owned by certain of the Company’s joint venture entities and required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in June 2016, the Company recognized an additional gain of approximately $0.3 million associated with the sale of the Badgley Mischka intellectual property and related assets which was previously owned by the Iconix Australia joint venture resulting in an aggregate gain on sale of the brand of $11.8 million.

[3] In April 2016, the Company sold its interest in TangLi International, Ltd. (Ed Hardy China) for $11.4 million in cash. The Company recognized a loss of $1.9 million as a result of this transaction.

[4] In June 2016, the Company sold its rights to the London Fog intellectual property in the South Korea territory to NS International Limited for 1.1 billion Korean Won (approximately $1.0 million) in cash. The Company recognized a gain of approximately $0.6 million as a result of this transaction.

[5] In September 2016, the Company sold its interest in certain Badgley Mischka trademarks for shoes and handbags in respect of the Greater China territory for $1.2 million in cash. The Company recognized a gain of $0.1 million as a result of this transaction.