Consolidated Entities - Investments in Iconix China (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Jun. 21, 2013
Investment [Line Items]
Ownership by Iconix China		50.00%
Iconix China
Investment [Line Items]
Value of Investment	$ 42,659
Iconix China | Candies Shanghai Fashion Co., Ltd.
Investment [Line Items]
Ownership by Iconix China	20.00%
Value of Investment	$ 9,494
Iconix China | Marc Ecko China Ltd.
Investment [Line Items]
Ownership by Iconix China	15.00%
Value of Investment	$ 2,293
Iconix China | Ningbo Material Girl Fashion Co., Ltd
Investment [Line Items]
Ownership by Iconix China	20.00%
Value of Investment	$ 5,439
Iconix China | Tangli International Holdings Ltd,
Investment [Line Items]
Ownership by Iconix China	20.00%
Value of Investment	$ 10,486
Iconix China | Ecko Industry (Shanghai) Co., Ltd.
Investment [Line Items]
Ownership by Iconix China	20.00%
Value of Investment	$ 11,158
Iconix China | Joe Boxer China, Ltd.
Investment [Line Items]
Ownership by Iconix China	25.00%
Value of Investment	$ 3,789