Joint Ventures and Investments - Equity Method Investments (Parenthetical) (Detail) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2017
Schedule Of Equity Method Investments [Line Items]
Pre-tax gain on deconsolidation of entity			$ 3,772
Galore Media, Inc. | Series A Preferred Stock
Schedule Of Equity Method Investments [Line Items]
Shares repurchase	50,050
Shares purchased, value	$ 500
Share repurchase amount received upon execution of agreement	$ 300
Shares repurchase agreed to forfeited and surrendered upon execution of agreement	46,067
Galore Media, Inc. | Series A Preferred Stock | Other Assets - Current
Schedule Of Equity Method Investments [Line Items]
Share repurchase remaining amount to be received	$ 200		$ 200
Iconix SE Asia, Ltd.
Schedule Of Equity Method Investments [Line Items]
Pre-tax gain on deconsolidation of entity		$ 3,800
Iconix SE Asia, Ltd. | Level 3
Schedule Of Equity Method Investments [Line Items]
Equity-method investment at fair value		$ 17,400