Trademarks and Other Intangibles, net - Additional Information (Detail) - USD ($)	1 Months Ended						3 Months Ended	12 Months Ended
	Mar. 31, 2015	Feb. 28, 2015	Dec. 31, 2014	Jun. 30, 2014	Feb. 28, 2014	Jan. 31, 2014	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Intangible Assets by Major Class [Line Items]
Trademark impairment							$ 402,400,000	$ 402,392,000	$ 0	$ 0
Impairment of intangible assets, finite-lived								0	0	0
Amortization expense for intangible assets								3,088,000	$ 4,530,000	$ 7,428,000
Projects amortization expenses, 2016							1,700,000	1,700,000
Projects amortization expenses, 2017							900,000	900,000
Projects amortization expenses, 2018							400,000	400,000
Projects amortization expenses, 2019							200,000	200,000
Projects amortization expenses, 2020							$ 200,000	$ 200,000
Iconix China
Intangible Assets by Major Class [Line Items]
Controlling interest	50.00%
Interest acquired, including previously acquired interest	100.00%						100.00%	100.00%
Strawberry Shortcake
Intangible Assets by Major Class [Line Items]
Increase in value of indefinite-lived trademarks and licensing contracts	$ 56,200,000
Pony International, LLC.
Intangible Assets by Major Class [Line Items]
Controlling interest		75.00%
Increase in value of indefinite-lived trademarks and licensing contracts		$ 32,600,000
Non-controlling interest		25.00%
Hydraulic IP Holdings
Intangible Assets by Major Class [Line Items]
Controlling interest			51.00%						51.00%
NGX LLC
Intangible Assets by Major Class [Line Items]
Controlling interest			51.00%						51.00%
Iconix Latin America
Intangible Assets by Major Class [Line Items]
Controlling interest					50.00%
Interest acquired, including previously acquired interest					100.00%
Iconix Europe
Intangible Assets by Major Class [Line Items]
Controlling interest						1.00%
Interest acquired, including previously acquired interest						51.00%
Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								1 year
Minimum | Non-compete agreements and contracts
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								1 year
Residual value							$ 0	$ 0
Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								15 years
Maximum | Non-compete agreements and contracts
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								15 years
Residual value							0	$ 0
Trademarks
Intangible Assets by Major Class [Line Items]
Residual value							0	$ 0
Trademarks | Sharper Image
Intangible Assets by Major Class [Line Items]
Increase (Decrease) in indefinite-lived trademarks				$ (3,600,000)
Trademarks | Iconix China
Intangible Assets by Major Class [Line Items]
Increase in value of indefinite-lived intangible assets	$ 40,500,000
Trademarks | Hydraulic IP Holdings
Intangible Assets by Major Class [Line Items]
Increase in value of indefinite-lived intangible assets			$ 9,500,000
Trademarks | NGX LLC
Intangible Assets by Major Class [Line Items]
Increase in value of indefinite-lived intangible assets			$ 9,000,000
Trademarks | Iconix Latin America
Intangible Assets by Major Class [Line Items]
Increase in value of indefinite-lived intangible assets					$ 82,400,000
Trademarks | Iconix Europe
Intangible Assets by Major Class [Line Items]
Increase in value of finite-lived intangible assets						$ 27,000,000
Trademarks | Minimum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								10 years
Residual value							0	$ 0
Trademarks | Maximum
Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, useful life								15 years
Residual value							0	$ 0
Men's
Intangible Assets by Major Class [Line Items]
Non-cash asset impairment charges							437,500,000
Operating Segments | Men's | Trademarks
Intangible Assets by Major Class [Line Items]
Non-cash asset impairment charges							362,000,000
Operating Segments | Men's | Ecko
Intangible Assets by Major Class [Line Items]
Trademark impairment								129,000,000
Residual value							0	0
Operating Segments | Men's | Rocawear
Intangible Assets by Major Class [Line Items]
Trademark impairment								169,000,000
Residual value							0	0
Operating Segments | Men's | Ed Hardy
Intangible Assets by Major Class [Line Items]
Trademark impairment								54,000,000
Residual value							0	0
Operating Segments | Home | Trademarks
Intangible Assets by Major Class [Line Items]
Non-cash asset impairment charges							40,000,000
Operating Segments | Home | Royal Velvet
Intangible Assets by Major Class [Line Items]
Trademark impairment								38,000,000
Residual value							$ 0	$ 0