Estimated Fair Value of Assets Acquired (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended	1 Months Ended	3 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended
	Dec. 31, 2014	Feb. 28, 2014	Mar. 31, 2014	Jan. 31, 2014	Nov. 30, 2012	Feb. 28, 2013	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Gain on re-measurement of initial equity investment	$ 37,893
Goodwill	231,738						230,976	225,687
Iconix Latin America
Business Acquisition [Line Items]
Fair value of non-controlling interest		42,698
Less: note receivable owed to the Company		(1,695)
Add: accrued distributions due to New Brands		997
Cash paid to New Brands		42,000
Value of initial equity investment prior to 2014 Buy-out		4,805
Gain on re-measurement of initial equity investment		37,893	37,893
Fair value of business		85,396
Trademarks		82,400
Cash		1,842
Working capital		(676)
Goodwill		1,130
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total		85,396
Iconix Latin America | Licensing agreements
Business Acquisition [Line Items]
Finite intangible assets		700
Iconix Europe
Business Acquisition [Line Items]
Fair value of non-controlling interest				13,800
Value of initial equity investment prior to 2014 Buy-out				13,800
Fair value of business				27,600
Trademarks				27,000
Cash				677
Working capital				(77)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total				27,600
Umbro
Business Acquisition [Line Items]
Cash paid to New Brands					225,000
Trademarks					220,500
Goodwill					2,300
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total					225,000
Umbro | Licensing agreements
Business Acquisition [Line Items]
Finite intangible assets					2,200
Lee Cooper
Business Acquisition [Line Items]
Cash paid to sellers by the Company						72,735
Trademarks						69,250
Working capital						1,577
Goodwill						1,058
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total						72,735
Lee Cooper | Licensing agreements
Business Acquisition [Line Items]
Finite intangible assets						850
Buffalo Brand
Business Acquisition [Line Items]
Fair value of non-controlling interest						59,489
Cash paid to New Brands						76,500
Fair value of business						135,989
Trademarks						142,600
Goodwill						4,060
Deferred tax liability						(14,011)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Total						135,989
Buffalo Brand | Licensing agreements
Business Acquisition [Line Items]
Finite intangible assets						2,400
Buffalo Brand | Non-compete agreements
Business Acquisition [Line Items]
Finite intangible assets						$ 940