Consolidated Entities - Additional Information (Detail)	3 Months Ended				3 Months Ended		1 Months Ended	12 Months Ended				1 Months Ended		0 Months Ended			1 Months Ended				1 Months Ended	3 Months Ended		1 Months Ended			3 Months Ended		1 Months Ended	3 Months Ended	12 Months Ended						0 Months Ended		0 Months Ended		12 Months Ended		1 Months Ended						1 Months Ended					1 Months Ended		3 Months Ended	1 Months Ended					1 Months Ended		1 Months Ended	12 Months Ended	1 Months Ended			0 Months Ended	1 Months Ended			1 Months Ended	12 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended				1 Months Ended			12 Months Ended			3 Months Ended		1 Months Ended						12 Months Ended						1 Months Ended			12 Months Ended		1 Months Ended				1 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Jun. 21, 2013	Mar. 31, 2015 Administrative Manager [Member]	Mar. 31, 2015 Local Manager [Member]	Nov. 30, 2013 Iconix Israel USD ($)	Dec. 31, 2013 Iconix Israel USD ($)	Mar. 31, 2015 Iconix Israel USD ($)	Mar. 31, 2015 Other assets - current Iconix Israel USD ($)	Mar. 31, 2015 Other Assets Iconix Israel USD ($)	Feb. 28, 2013 Alberta ULC USD ($)	Nov. 29, 2012 Peanuts Worldwide	Apr. 26, 2011 Hardy Way USD ($)	Nov. 29, 2012 Hardy Way	Apr. 26, 2011 Hardy Way	May 31, 2009 Hardy Way Equity method of accounting USD ($)	Mar. 31, 2015 MG Icon USD ($)	Dec. 31, 2014 MG Icon USD ($)	Nov. 29, 2012 MG Icon	Mar. 31, 2010 MG Icon Equity method of accounting USD ($)	Mar. 31, 2015 MG Icon Equity method of accounting USD ($)	Mar. 31, 2015 MG Icon Minimum Equity method of accounting USD ($)	Jul. 31, 2013 Marcy Media Holdings USD ($)	Sep. 30, 2013 Complex Media Inc. USD ($)	Mar. 31, 2015 Strawberry Shortcake USD ($)	Mar. 31, 2015 Strawberry Shortcake USD ($)	Mar. 31, 2015 Candies Shanghai Fashion USD ($)	Mar. 31, 2014 LC Partners U.S. LLC USD ($) Installment	Mar. 31, 2015 LC Partners U.S. LLC USD ($)	Dec. 31, 2014 LC Partners U.S. LLC USD ($)	Mar. 31, 2015 LC Partners U.S. LLC Other assets - current USD ($)	Mar. 31, 2015 LC Partners U.S. LLC Other Assets USD ($)	Mar. 31, 2015 Iconix China	Mar. 31, 2015 Iconix China Equity method of accounting	Feb. 28, 2013 Buffalo Brand Alberta ULC	Jun. 03, 2010 Icon Entertainment LLC Peanuts Worldwide USD ($)	Jun. 03, 2010 Icon Entertainment LLC Peanuts Worldwide	Jun. 03, 2010 Beagle Scout LLC Peanuts Worldwide USD ($)	Jun. 03, 2010 Beagle Scout LLC Peanuts Worldwide USD ($)	Dec. 31, 2013 Iconix Australia USD ($)	Sep. 30, 2013 Iconix Australia USD ($)	Sep. 30, 2013 Iconix Australia Two Year Call Option	Sep. 30, 2013 Iconix Australia Five-Year Put/Call Options	Sep. 30, 2013 Iconix Australia Maximum Two Year Call Option	Sep. 30, 2008 Parent Company Equity method of accounting USD ($)	Jun. 30, 2013 Parent Company Equity method of accounting USD ($)	Jun. 30, 2013 Parent Company Equity method of accounting INR	Jun. 30, 2012 Novel Equity method of accounting USD ($)	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 ($)	Sep. 30, 2009 Novel Equity method of accounting USD ($)	Mar. 31, 2015 Iconix China USD ($)	Feb. 28, 2015 Pony International, LLC. USD ($)	Mar. 31, 2015 Pony International, LLC. USD ($)	Feb. 28, 2014 Iconix Latin America USD ($)	Jan. 31, 2014 Iconix Europe USD ($)	Dec. 31, 2009 Iconix Europe USD ($)	Dec. 31, 2014 Hydraulic IP Holdings USD ($)	Dec. 31, 2014 Hydraulic IP Holdings Top On International Group, LLC	Oct. 31, 2014 NGX LLC USD ($)	Oct. 31, 2014 NGX LLC NGO LLC	Dec. 31, 2012 Modern Amusement Equity method of accounting USD ($)	Dec. 31, 2014 Scion USD ($)	Jun. 30, 2010 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Mar. 31, 2009 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Jan. 31, 2014 Scion Cost method of accounting Variable Interest Entity, Not Primary Beneficiary USD ($)	Nov. 07, 2007 Scion Artful Dodger USD ($)	Apr. 30, 2015 Scion BBC LLC Subsequent Event USD ($)	May 31, 2012 Scion BBC LLC Billionaire Boys ClubTM/BBCTM and Ice CreamTM USD ($)	Apr. 30, 2015 Scion BBC LLC Billionaire Boys ClubTM/BBCTM and Ice CreamTM Subsequent Event	Dec. 31, 2014 Iconix Middle East USD ($)	Dec. 31, 2014 Iconix Middle East USD ($)	Mar. 31, 2015 Iconix Middle East USD ($)	Dec. 31, 2014 Iconix Middle East Two Year Call Option USD ($)	Mar. 31, 2015 Iconix Middle East Five-Year Put/Call Options	Mar. 31, 2015 Iconix Middle East Eight-Year Put/Call Options	Dec. 31, 2014 Iconix Middle East Maximum Two Year Call Option	Mar. 31, 2015 Iconix Middle East Minimum Five-Year Put/Call Options USD ($)	Mar. 31, 2015 Iconix Middle East Minimum Eight-Year Put/Call Options USD ($)	Mar. 31, 2015 Iconix Middle East Other assets - current USD ($)	Mar. 31, 2015 Iconix Middle East Other Assets USD ($)	Sep. 30, 2014 Iconix Southeast Asia USD ($)	Jun. 30, 2014 Iconix Southeast Asia USD ($)	Oct. 31, 2013 Iconix Southeast Asia USD ($)	Dec. 31, 2014 Iconix Southeast Asia USD ($)	Dec. 31, 2013 Iconix Southeast Asia USD ($)	Mar. 31, 2015 Iconix Southeast Asia USD ($)	Mar. 31, 2015 Iconix Southeast Asia Administrative Manager [Member]	Mar. 31, 2015 Iconix Southeast Asia Local Manager [Member]	Oct. 31, 2013 Iconix Southeast Asia Two Year Call Option	Oct. 31, 2013 Iconix Southeast Asia Five-Year Put/Call Options	Oct. 31, 2013 Iconix Southeast Asia Eight-Year Put/Call Options	Oct. 31, 2013 Iconix Southeast Asia Maximum Two Year Call Option	Mar. 31, 2015 Iconix Southeast Asia Minimum Five-Year Put/Call Options USD ($)	Mar. 31, 2015 Iconix Southeast Asia Minimum Eight-Year Put/Call Options USD ($)	Dec. 31, 2014 Iconix Southeast Asia Current year USD ($)	Mar. 31, 2015 Iconix Southeast Asia Europe/Turkey Minimum Five-Year Put/Call Options USD ($)	Mar. 31, 2015 Iconix Southeast Asia Guarantee of Business Revenue Minimum USD ($)	Mar. 31, 2015 Iconix Southeast Asia Guarantee of Business Revenue Two Thousand And Seventeen USD ($)	Mar. 31, 2015 Iconix Southeast Asia Other assets - current USD ($)	Mar. 31, 2015 Iconix Southeast Asia Other Assets USD ($)	Oct. 31, 2013 Greater China Territory Rights Five-Year Put/Call Options	Oct. 31, 2013 Greater China Territory Rights Eight-Year Put/Call Options	Jun. 30, 2013 Iconix Canada USD ($)	Dec. 31, 2013 Iconix Canada USD ($)	Mar. 31, 2015 Iconix Canada USD ($)	Jun. 30, 2013 Iconix Canada Guarantee of Business Revenue USD ($)	Mar. 31, 2015 Iconix Canada Other assets - current USD ($)	Mar. 31, 2015 Iconix Canada Other Assets USD ($)	Mar. 31, 2015 Iconix India USD ($)	Jun. 30, 2013 Iconix India Equity method of accounting USD ($)	Mar. 31, 2015 Iconix India Other assets - current USD ($)	Mar. 31, 2015 Iconix India Other Assets USD ($)	Jun. 30, 2013 Reliance Brands Limited Equity method of accounting USD ($)	Jun. 30, 2013 Reliance Brands Limited Equity method of accounting INR
Schedule of Investments [Line Items]
Committed contribution to joint venture																																														$ 5,000,000						$ 20,000,000	$ 9,000,000
Cash payment for acquisition of assets		22,000																						32,000,000	25,000,000												141,000,000		34,000,000							2,000,000			2,000,000	3,000,000	4,000,000	8,000,000
Business Acquisition, Percentage of Voting Interests Acquired												51.00%				85.00%	50.00%				50.00%													50.00%	50.00%			80.00%																50.00%	75.00%		50.00%	1.00%		51.00%		51.00%		51.00%			16.60%			100.00%	50.00%																																										50.00%
Business acquisition total purchase price														62,000,000			17,000,000				20,000,000																																	56,100,000																																																											6,000,000
Business acquisition purchase price, cash paid												76,500,000					9,000,000									105,000,000											172,100,000																	40,400,000	37,000,000		42,000,000			6,000,000		6,000,000		5,000,000					15,000,000	6,000,000	3,500,000
Business acquisition purchase price, common stock issued, value																	8,000,000																																					15,700,000
Equity interest acquired																												100.00%						100.00%																				100.00%			100.00%	51.00%
Goodwill	239,198,000		231,738,000																							500,000	500,000																											6,415,000	833,000	800,000
Equity interests aggregate fair value																												42,700,000
Note receivable																										10,000,000	10,000,000
Quarterly installment period																											2 years
Revenue	95,387,000	116,138,000																									1,400,000																													800,000
Percentage of minority interest in subsidiary																								5.00%	14.40%											49.00%				20.00%															25.00%						49.00%		49.00%
Percentage of interest sold in equity method investment	50.00%						50.00%																						50.00%													50.00%																	50.00%											50.00%		5000.00%	50.00%	50.00%												50.00%																				50.00%
Agreed price for sale of interest in a subsidiary																													4,000,000																														4,000,000														18,800,000	18,800,000										21,500,000	15,900,000																					17,800,000
Payment received upon sale interest in subsidiary							1,000,000																								800,000																											1,500,000	3,000,000														6,300,000											4,300,000	4,000,000	7,500,000																				8,900,000							2,000,000
Notes loaned to subsidiary																																								17,500,000
Notes receivable, annual interest rate																																								6.00%
Notes receivable, minimum principal annual installments																																								2,200,000
Notes receivable, maturity date																																							Jun. 03, 2015
Business acquisition purchase price, common stock issued, shares																	588,688
Business acquisition additional common stock issued, value																	1,000,000
Consideration paid to acquire interest in licensees																																																																			1
Cash collateral released and distributed to the Scion members																																																																		3,300,000
Cash collateral deposited under the terms of the entity's financing agreements																																																																				11,800,000
Decrease in restricted cash																																																																	8,500,000
Allowance for doubtful accounts receivable																																																																	2,700,000
Decrease in accounts receivable																																																																	5,800,000
Receivable for investments sold							2,300,000		1,400,000	800,000	600,000																		3,200,000	2,400,000		800,000	1,600,000																																								12,500,000	12,500,000	12,500,000							6,200,000	6,300,000			4,500,000			28,800,000													11,500,000	17,300,000			8,900,000		8,900,000		3,000,000	5,900,000
Committed amount receivable period							36 months																																																																		24 months													24 months																				5 years							48 months
Gain on sale of interest in subsidiary								2,300,000																																	5,100,000																																	10,300,000													18,700,000	4,700,000										13,600,000
Percentage of equity interest subject to call option																																													5.00%																																		5.00%																5.00%
Call option period																																											6 months																																	6 months																6 months
Call option commencement date																																											Sep. 17, 2015																																	Dec. 19, 2016																Oct. 01, 2015
Payment for the purchased call option																																																																												1,800,000
Put/Call option period																																																																													6 months	6 months															6 months	6 months										6 months	6 months
Put/Call option commencement date																																												Sep. 17, 2017																																	Dec. 19, 2019	Dec. 19, 2022															Oct. 01, 2018	Oct. 01, 2021										Sep. 17, 2019	Sep. 17, 2022
Purchase price Percentage of Agreed value																																																																											120.00%											120.00%
Royalty revenue																																																																																12,000,000	12,000,000																												2,700,000
Percentage of gross revenue paid monthly as services fee					5.00%	15.00%																																																																																				5.00%	15.00%
Payment made to subsidiary for diligence and Market analysis	3,100,000
Number of equal annual installments																													4
Net gain recognized on sale of interest in subsidiary																														4,000,000																																																																													9,800,000
Price for sale of interest in a subsidiary							3,300,000																																			7,200,000																																												12,000,000
Guaranteed minimum distributions																																																																																																				2,500,000	5,100,000
Agreed Value																																																																																																15,500,000	7,600,000		7,600,000
Business Combination, Consideration Transferred, Liabilities Incurred																																																																																																																	4,000,000
Business Combination, Bargain Purchase, Gain Recognized, Amount																																																																																																																	5,600,000
Additional amount agreed to be contributed as working capital																																															2,000,000	100,000,000																																																																				500,000	25,000,000
Note receivable	5,000,000																																																																																																															3,000,000		1,000,000	2,000,000
Acquisition of interest in MG Icon																					4,000,000	19,000,000
Additional cash received by seller																						3,000,000
Business acquisition remaining amount owed to Purim included in other current liabilities																		4,000,000	4,000,000			4,000,000																																447,000
Preferred profit distribution to the Company																							$ 23,000,000
Ownership by Iconix China				50.00%									80.00%		85.00%					50.00%															100.00%