Investments and Joint Ventures - Additional Information (Detail) (USD $)	6 Months Ended				1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended			1 Months Ended							1 Months Ended		1 Months Ended					1 Months Ended		12 Months Ended	1 Months Ended				1 Months Ended		6 Months Ended		1 Months Ended					6 Months Ended			1 Months Ended	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Nov. 07, 2007 Scion Artful Dodger	Mar. 31, 2009 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Jun. 30, 2011 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Jun. 30, 2010 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Jun. 30, 2011 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Jun. 30, 2010 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Dec. 31, 2010 Scion Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Jun. 30, 2011 Scion Cost method of accounting	Dec. 31, 2010 Scion Cost method of accounting	Mar. 31, 2009 Parent Company Variable Interest Entity, Not Primary Beneficiary Cost method of accounting	Sep. 30, 2008 Parent Company Equity method of accounting	May 31, 2011 Novel Equity method of accounting	Jul. 31, 2010 Novel Equity method of accounting	Sep. 30, 2008 Novel Equity method of accounting	Jun. 30, 2011 Novel Equity method of accounting	Sep. 30, 2009 Novel Equity method of accounting	Dec. 29, 2008 Iconix Latin America Equity method of accounting	Jun. 30, 2011 Iconix Latin America Equity method of accounting	Oct. 31, 2009 Licensing agreements IPH Unltd Ecko Assets Year	Oct. 31, 2009 IPH Unltd	Jun. 30, 2011 IPH Unltd	Dec. 31, 2010 IPH Unltd	Oct. 31, 2009 IPH Unltd Ecko Assets	Jan. 31, 2011 Iconix Europe Equity method of accounting	Dec. 31, 2009 Iconix Europe Equity method of accounting	Dec. 31, 2009 Iconix Europe Equity method of accounting	Jun. 03, 2010 Peanuts Worldwide Icon Entertainment LLC	Jun. 03, 2010 Peanuts Worldwide Beagle Scout LLC	Jun. 30, 2011 Peanuts Worldwide Beagle Scout LLC Other assets - current	Jun. 30, 2011 Peanuts Worldwide Beagle Scout LLC Other assets - non-current	Apr. 26, 2011 Hardy Way	May 31, 2009 Hardy Way Equity method of accounting	Jun. 30, 2011 Hardy Way Equity method of accounting	Apr. 26, 2011 Hardy Way Equity method of accounting Year	Mar. 31, 2011 MG Icon Equity method of accounting	Mar. 31, 2010 MG Icon Equity method of accounting	Jun. 30, 2011 MG Icon Equity method of accounting	Jun. 30, 2011 MG Icon Equity method of accounting Other current liabilities	Jun. 30, 2011 MG Icon Equity method of accounting Other liabilities	Jun. 30, 2011 MG Icon Equity method of accounting Minimum	Jun. 30, 2010 Peanuts Worldwide	Jun. 03, 2010 Peanuts Worldwide	Jun. 03, 2010 Peanuts Worldwide Licensing agreements Year	Jun. 30, 2011 Licensing agreements Year
Schedule of Investments [Line Items]
Controlling interest					16.60%																									80.00%				85.00%	50.00%		85.00%		50.00%					80.00%
Business acquisition total purchase price				$ 15,000,000																															$ 17,000,000				$ 20,000,000
Consideration paid to acquire interest in licensees					1
Business acquisition purchase price, cash paid																														172,100,000					9,000,000
Acquisition of interest in MG Icon		4,000,000																																				4,000,000	4,000,000
Business acquisition purchase price, common stock issued, shares																																			588,688
Business acquisition remaining amount owed to Purim																																								12,000,000	4,000,000	8,000,000
Business acquisition purchase price, common stock issued, value																																			8,000,000
Business acquisition additional common stock issued, value																																			1,000,000
Percentage of minority interest in subsidiary																							49.00%								20.00%
Contribution made to investment													2,100,000	2,000,000	3,000,000	4,000,000	8,000,000						63,500,000							141,000,000	34,000,000			62,000,000
Percentage of interest in joint venture after transaction																							51.00%
Cash payment for acquisition of assets																																		55,000,000
Future contribution to be made to investment year one																		2,000,000
Indebtedness of joint venture																							90,000,000
Cash entitled to be received by sellers upon the achievement of earn-out																																		7,000,000
Cash collateral deposited under the terms of the entity's financing agreements					4,100,000
Cash collateral released and distributed to the Scion members										3,300,000
Remaining cash collateral, restricted cash	3,727,000	3,009,000	3,300,000							800,000
Dividend from investment in licensee						0	500,000	0	600,000
Consolidated assets that are collateral for variable interest entity's obligations											12,100,000	12,600,000
Committed contribution to joint venture														5,000,000			20,000,000		9,000,000
Percentage of interest sold in equity method investment																				50.00%								50.00%	50.00%
Agreed price for sale of interest in a subsidiary																				6,000,000								4,000,000	4,000,000
Payment received upon sale interest in subsidiary																				1,000,000							1,000,000	3,000,000
Remaining receivable from sale of 50% interest in Iconix Latin America																				5,000,000	500,000
Gain on sale of interest in subsidiary																													7,000,000
Remaining receivable from sale of 50% interest in Iconix Latin America, payable in installment one																					500,000
Prepaid royalties																																					7,000,000
Guaranteed minimum royalties, number of years																																					2
Gain on re-measurement of equity investment	21,465,000																																			21,465,000
Goodwill deductible for income tax purposes																										700,000											18,800,000								17,700,000
Minimum amortization contractual period of licensing contracts																						1																								1	1
Maximum amortization contractual period of licensing contracts																						9																								5	9
Consolidated assets that are collateral for variable interest entity's obligations																								208,400,000	209,100,000
Preferred profit distribution																																											20,000,000
Notes loaned to subsidiary																															17,500,000	2,200,000	13,100,000
Notes receivable, annual interest rate																															6.00%
Notes receivable, minimum principal annual installments																															$ 2,200,000
Notes receivable, maturity date																															Jun. 03, 2015