Acquisitions, Investments and Joint Ventures - Additional Information (Detail)	3 Months Ended		6 Months Ended			6 Months Ended			6 Months Ended		1 Months Ended	6 Months Ended		6 Months Ended				1 Months Ended			1 Months Ended	6 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						1 Months Ended									1 Months Ended				6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2011 USD ($)	Jun. 30, 2012 Licensing agreements Minimum	Jun. 30, 2012 Licensing agreements Maximum	Jul. 27, 2011 Zoo York brand USD ($)	Jun. 30, 2012 MG Icon USD ($)	Jun. 30, 2011 MG Icon USD ($)	Mar. 31, 2010 MG Icon Equity method of accounting USD ($)	Jun. 30, 2012 MG Icon Equity method of accounting USD ($)	Mar. 31, 2012 MG Icon Equity method of accounting USD ($)	Jun. 30, 2012 MG Icon Equity method of accounting Minimum USD ($)	Mar. 31, 2012 MG Icon Equity method of accounting Period 1 USD ($)	Mar. 31, 2012 MG Icon Equity method of accounting Period 2 USD ($)	Jun. 03, 2010 Peanuts Worldwide USD ($)	Jun. 03, 2010 Peanuts Worldwide Licensing agreements Minimum	Jun. 03, 2010 Peanuts Worldwide Licensing agreements Maximum	Oct. 26, 2011 Sharper Image USD ($)	Apr. 26, 2011 Hardy Way USD ($)	Jun. 30, 2011 Hardy Way USD ($)	Dec. 23, 2011 Hardy Way Nervous Tattoo, Inc. USD ($)	May 31, 2009 Hardy Way Equity method of accounting USD ($)	Jun. 30, 2012 Scion Cost method of accounting USD ($)	Dec. 31, 2011 Scion Cost method of accounting USD ($)	Jun. 30, 2010 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Mar. 31, 2009 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Jun. 30, 2012 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Jan. 31, 2012 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Dec. 31, 2011 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Nov. 07, 2007 Scion Artful Dodger USD ($)	Dec. 09, 2011 Iconix China USD ($)	Dec. 29, 2008 Iconix Latin America Equity method of accounting USD ($)	Oct. 31, 2009 IPH Unltd USD ($)	Jun. 30, 2012 IPH Unltd USD ($)	Dec. 31, 2011 IPH Unltd USD ($)	Oct. 31, 2009 IPH Unltd Ecko Assets USD ($)	Oct. 31, 2009 IPH Unltd Ecko Assets Licensing agreements Minimum	Oct. 31, 2009 IPH Unltd Ecko Assets Licensing agreements Maximum	Jan. 31, 2011 Iconix Europe Equity method of accounting USD ($)	Dec. 31, 2009 Iconix Europe Equity method of accounting USD ($)	Dec. 31, 2009 Iconix Europe Equity method of accounting USD ($)	Dec. 31, 2009 Iconix Europe Equity method of accounting Minimum USD ($)	Jun. 03, 2010 Icon Entertainment LLC Peanuts Worldwide USD ($)	Jun. 03, 2010 Beagle Scout LLC Peanuts Worldwide USD ($)	Jun. 30, 2012 Beagle Scout LLC Peanuts Worldwide Other assets - current USD ($)	Jun. 30, 2012 Beagle Scout LLC Peanuts Worldwide Other assets USD ($)	Nov. 28, 2011 OP Japan USD ($)	Sep. 30, 2008 Parent Company Equity method of accounting USD ($)	Jun. 30, 2012 Parent Company Equity method of accounting USD ($)	Jun. 30, 2012 Parent Company Equity method of accounting INR	Jan. 31, 2012 Parent Company Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Mar. 31, 2009 Parent Company Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Jan. 31, 2012 Scion Partner Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Mar. 31, 2009 Scion Partner Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	May 31, 2012 Scion BBC LLC BBC Ice Cream, LLC USD ($)	Mar. 31, 2012 Scion BBC LLC BBC Ice Cream, LLC USD ($)	Jun. 30, 2012 Novel Equity method of accounting USD ($)	May 31, 2011 Novel Equity method of accounting USD ($)	Jul. 31, 2010 Novel Equity method of accounting USD ($)	Sep. 30, 2008 Novel Equity method of accounting USD ($)	Sep. 30, 2009 Novel Equity method of accounting USD ($)	Jun. 30, 2012 Latin America Territory USD ($)	Dec. 31, 2011 Latin America Territory USD ($)	Jun. 30, 2012 Latin America Territory Other assets - current USD ($)	Jun. 30, 2012 Latin America Territory Other assets USD ($)	May 31, 2012 Imaginative Brand Developers Equity method of accounting USD ($)	Jun. 30, 2012 Imaginative Brand Developers Equity method of accounting USD ($)	Jun. 30, 2012 Imaginative Brand Developers Equity method of accounting Other assets - current USD ($)	Jun. 30, 2012 Imaginative Brand Developers Equity method of accounting Other Assets USD ($)	Jun. 30, 2012 Reliance Brands Limited Equity method of accounting USD ($)	Jun. 30, 2012 Reliance Brands Limited Equity method of accounting INR
Schedule of Investments [Line Items]
Percentage of interest sold in equity method investment																																		50.00%								50.00%	50.00%																									50.00%
Price for sale of interest in a subsidiary																																																																				$ 6,000,000
Payment received upon sale interest in subsidiary																																		1,000,000							1,000,000	3,000,000																										2,000,000
Receivable for investments sold																																		5,000,000																														4,400,000		1,100,000	3,300,000		4,000,000	1,000,000	3,000,000
Committed amount receivable period																																		30 months																																		48 months
Net gain recognized on sale of interest in subsidiary																																	12,700,000																5,600,000																			5,600,000
Additional amount agreed to be contributed as working capital																																																			2,000,000	100,000,000																				2,000,000	100,000,000
Amount contributed as working capital at closing																																																			500,000	25,000,000																				500,000	25,000,000
Business acquisition purchase price, cash paid																				65,600,000				9,000,000																					172,100,000
Percentage of ownership interest sold																																																	45.00%
Payment received upon sale ownership interest in subsidiary																																																	7,400,000
Investment with a cost basis sold, carrying value																																																	1,800,000
Guaranteed royalties receivable per year																																																	2,000,000
Guaranteed royalties, number of years																																																	5 years
Percentage of Companies ownership in OP Japan																																																	55.00%
Business acquisition total purchase price								18,000,000			20,000,000													17,000,000								15,000,000																									3,800,000
Controlling interest								100.00%			50.00%										85.00%			50.00%				16.60%																	80.00%												50.00%
Consideration paid to acquire interest in licensees																												1
Contribution made to investment			3,771,000																		62,000,000														63,500,000										141,000,000	34,000,000				2,000,000			1,100,000	2,100,000	1,100,000	2,100,000			2,000,000	3,000,000	4,000,000	8,000,000
Cash collateral deposited under the terms of the entity's financing agreements																												4,100,000		2,200,000
Cash collateral released and distributed to the Scion members																											3,300,000
Remaining cash collateral, restricted cash	23,574,000	3,727,000	23,574,000	3,727,000	14,071,000																										800,000
Cash Collateral paid																													3,000,000
Committed contribution to joint venture																																																		5,000,000								6,300,000				20,000,000	9,000,000
Consolidated assets that are collateral for variable interest entity's obligations																									11,100,000	11,600,000
Investment with a cost basis																																	2,600,000
Fair value of investment with a cost basis																																	15,300,000
Joint venture ownership interest																																	50.00%
Equity earnings on joint ventures	1,460,000	2,517,000	2,758,000	3,138,000																													6,400,000
Agreed price for sale of interest in a subsidiary																																		6,000,000								4,000,000	4,000,000																						5,700,000
Period for revenue recognition																																																																3 years
Business acquisition purchase price, common stock issued, shares																								588,688
Business acquisition purchase price, common stock issued, value																								8,000,000
Business acquisition additional common stock issued, value																								1,000,000
Non-cash pre-tax re-measurement gain				21,465,000																	21,500,000
Cash payment for acquisition of assets																					55,000,000
Cash entitled to be received by seller based on certain criteria													3,000,000								7,000,000
Goodwill deductible for income tax purposes																	17,700,000				18,800,000																	700,000
Prepaid royalties																					7,000,000
Guaranteed minimum royalties period																					2 years
Amount released as part of agreement termination																							2,000,000
Contingency provision amended and considered earned by NT																							5,000,000
Percentage of minority interest in subsidiary																																			49.00%											20.00%
Percentage of interest in joint venture after transaction																																			51.00%
Indebtedness of joint venture																																			90,000,000
Maximum amortization contractual period of licensing contracts						1 year	9 years											1 year	5 years																				1 year	9 years
Consolidated assets that are collateral for variable interest entity's obligations																																				184,000,000	184,500,000
Gain on sale of interest in subsidiary																																											7,000,000
Preferred profit distribution to the Company														23,000,000																														6,000,000
Acquisition of interest in MG Icon									4,000,000	4,000,000	4,000,000	8,000,000										62,000,000
Additional cash received by seller													1,000,000
Additional installment payment to be received by seller															1,000,000	1,000,000
Business acquisition remaining amount owed to Purim												10,000,000
Business acquisition remaining amount owed to Purim included in other current liabilities												5,000,000
Business acquisition remaining amount owed included in other liabilities												5,000,000
Notes loaned to subsidiary																																														17,500,000	2,200,000	7,700,000
Notes receivable, annual interest rate																																														6.00%
Notes receivable, minimum principal annual installments																																														$ 2,200,000
Notes receivable, maturity date																																														Jun. 03, 2015