Estimated Fair Value of Assets Acquired Less Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended		1 Months Ended
Dec. 31, 2011	Oct. 26, 2011 Sharper Image	Apr. 26, 2011 Hardy Way
Business Acquisition [Line Items]
Cash paid to sellers by Iconix Brand Group, Inc.		$ 65,600	$ 62,000
Value of initial equity investment prior to this transaction			19,973
Gain on re-measurement of initial equity investment	21,465		21,465
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net, Total		65,600	103,438
Trademarks		57,500	96,500
License agreements		1,325	1,000
Cash			3,605
AR			312
Other liabilities		(1,451)	(1,886)
Discount for 15% non-controlling interest			(14,930)
Goodwill		8,226	18,837
Business Acquisition Purchase Price Allocation Assets Acquired Liabilities Assumed Net		$ 65,600	$ 103,438

Business Acquisition, Purchase Price Allocation, Noncontrolling Interest

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- Definition

Amount of cash paid to acquire the entity.

+ References

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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- Definition

The total purchase price of the acquired entity. This includes cash paid to equity interest holders of the acquired entity, fair value of debt and equity securities issued to equity holders of the acquired entity, and transaction costs paid to third parties to consummate the acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The amount of cash and cash equivalents acquired in a business combination.

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- Definition

The amount of acquisition cost of a business combination allocated to receivables.

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will not be amortized. Does not include goodwill.

+ References

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-Publisher FASB

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-Paragraph 51

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The amount of acquisition cost of a business combination allocated to other noncurrent liabilities of the acquired entity.

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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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