Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Nov. 20, 2015
Document And Entity Information [Abstract]
Document Type	10-Q/A
Amendment Flag	true
Amendment Description	Iconix Brand Group, Inc. (the “Company”) is filing this Amendment No. 2 on Form 10-Q/A (the “Amended Filing”) to amend our Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, originally filed with the U.S. Securities and Exchange Commission, (“SEC”) on August 12, 2015 (the “Original Filing”), to restate our unaudited consolidated financial statements and related footnote disclosures as of June 30, 2015 and for the six month period ended June 30, 2015. Background and Effects of the Restatement As previously announced, a special committee (the “Special Committee”) of the Board of Directors (“Board”) of the Company conducted a review of the accounting treatment related to certain transactions. Based on the Special Committee’s review and additional review by the Audit Committee (the “Audit Committee”) of the Board and the Company’s current management team, on October 30, 2015, the Board, the Audit Committee and the Company’s current management team concluded that the Company will restate its historical financial statements in respect of (i) the fourth quarter and fiscal year of 2013, (ii) the 2014 fiscal year and each quarterly period thereof and (iii) the first and second quarters of 2015, to correct certain errors in accounting. These restatements include the correction of errors regarding (i) the classification of contractually obligated expenses, retail support and other costs as selling, general and administrative expenses, as opposed to netting such expenses against licensing or other revenue, as applicable, (ii) inadequate support for revenue recognition relating to certain license agreements, and (iii) inadequate estimation of accruals related to retail support for certain license agreements. Items Amended in This Filing This Amended Filing amends and restates the following items of the Company's Original Filing as of, and for the period ended June 30, 2015. Part I - Item 1. Financial Statements Part I - Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations Part I - Item 4. Controls and Procedures Part II - Item 6. Exhibits Additionally, conforming changes occur throughout the document because of changes to the financial statements. In accordance with applicable SEC rules, this Amended Filing includes certifications as required by Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) from the Company’s Interim Principal Executive Officer and Principal Financial Officer dated as of the date of this Amended Filing. Except for the items noted above, no other information included in the Original Filing is being amended by this Amended Filing. The Amended Filing speaks as of the date of the Original Filing and the Company has not updated the Original Filing to reflect events occurring subsequent to the date of the Original Filing. Accordingly, this Amended Filing should be read in conjunction with Iconix’s filings made with the SEC subsequent to the date of the Original Filing.
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Trading Symbol	ICON
Entity Registrant Name	ICONIX BRAND GROUP, INC.
Entity Central Index Key	0000857737
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		48,393,703