Iconix Brand (ICON) 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 07, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	ICON
Entity Registrant Name	ICONIX BRAND GROUP, INC.
Entity Central Index Key	857,737
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		66,109,592

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 52,017	$ 65,927
Restricted cash	43,719	48,766
Accounts receivable, net	47,470	66,625
Other assets – current	57,164	51,850
Total Current Assets	200,370	233,168
Property and equipment:
Furniture, fixtures and equipment	22,012	21,661
Less: Accumulated depreciation	(16,145)	(15,567)
Property, Plant and Equipment, Net, Total	5,867	6,094
Other Assets:
Other assets	17,925	6,268
Deferred income tax asset	4,486	4,492
Trademarks and other intangibles, net	468,675	465,722
Investments and joint ventures	91,182	90,887
Goodwill	63,882	63,882
Other Assets, Total	646,150	631,251
Total Assets	852,387	870,513
Current Liabilities:
Accounts payable and accrued expenses	32,918	49,191
Deferred revenue	8,726	5,525
Current portion of long-term debt	46,549	44,349
Other liabilities – current	10,236	13,581
Total Current Liabilities	98,429	112,646
Deferred income tax liability	11,892	11,466
Other tax liabilities	492	531
Long-term debt, less current maturities (includes $109,455 and $0, respectively, at fair value)	711,802	756,493
Other liabilities	9,847	10,066
Total Liabilities	832,462	891,202
Redeemable Non-Controlling Interest	29,792	30,287
Commitments and contingencies
Stockholders’ (Deficit) Equity:
Common stock, $.001 par value shares authorized 150,000; shares issued 96,816 and 90,159, respectively	97	90
Additional paid-in capital	1,031,084	1,044,518
Accumulated losses	(177,146)	(223,718)
Accumulated other comprehensive loss	(45,342)	(51,280)
Less: Treasury stock – 32,912 and 32,820 shares at cost, respectively	(844,055)	(844,030)
Total Iconix Brand Group, Inc. Stockholders’ Deficit	(35,362)	(74,420)
Non-Controlling Interest, net of installment payments due from non-controlling interest holders	25,495	23,444
Total Stockholders’ Deficit	(9,867)	(50,976)
Total Liabilities, Redeemable Non-Controlling Interest and Stockholders’ Equity	$ 852,387	$ 870,513

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Statement Of Financial Position [Abstract]
Long-term debt, fair value	$ 109,455	$ 0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	96,816,000	90,159,000
Treasury stock, shares	32,912,000	32,820,000

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Licensing revenue	$ 48,548	$ 58,722
Selling, general and administrative expenses	28,640	25,392
Depreciation and amortization	654	653
Equity earnings on joint ventures	(96)	(933)
Gain on sale of trademarks	(1,143)
Operating income	20,493	33,610
Other expenses (income):
Interest expense	14,549	15,049
Interest income	(122)	(126)
Other income	(26,132)	(1)
(Gain) loss on extinguishment of debt	(4,473)	5,482
Foreign currency translation (gain) loss	(551)	429
Other (income) expenses – net	(16,729)	20,833
Income from continuing operations before income taxes	37,222	12,777
Provision for income taxes	1,650	5,887
Net income from continuing operations	35,572	6,890
Less: Net income attributable to non-controlling interest from continuing operations	2,857	2,488
Net income from continuing operations attributable to Iconix Brand Group, Inc.	32,715	4,402
Loss from discontinued operations before income taxes		(12,477)
Benefit for income taxes		(5,098)
Net loss from discontinued operations		(7,379)
Less: Net income attributable to non-controlling interest from discontinued operations		1,303
Net loss from discontinued operations attributable to Iconix Brand Group, Inc.		(8,682)
Net income (loss) attributable to Iconix Brand Group, Inc.	$ 32,715	$ (4,280)
Earnings (loss) per share - basic:
Continuing operations	$ 0.51	$ 0.06
Discontinued operations		(0.15)
Earnings (loss) per share - basic	0.51	(0.09)
Earnings (loss) per share - diluted:
Continuing operations	0.51	0.06
Discontinued operations		(0.15)
Earnings (loss) per share - diluted	$ 0.51	$ (0.09)
Weighted average number of common shares outstanding:
Basic	59,117	56,964
Diluted	59,117	56,964

Unaudited Condensed Consolidat5

Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income from continuing operations	$ 35,572	$ 6,890
Other comprehensive income:
Foreign currency translation gain	2,761	2,630
Change in fair value of available for sale securities		(571)
Total other comprehensive income	2,761	2,059
Comprehensive income	38,333	8,949
Less: comprehensive income attributable to non-controlling interest from continuing operations	2,857	2,488
Comprehensive income from continuing operations attributable to Iconix Brand Group, Inc.	$ 35,476	$ 6,461

Unaudited Condensed Consolidat6

Unaudited Condensed Consolidated Statements of Stockholders' (Deficit) Equity - USD ($) shares in Thousands, $ in Thousands	Total	5.75% Convertible Notes	1.50% Convertible Notes	Common Stock	Common Stock5.75% Convertible Notes	Additional Paid-in Capital	Additional Paid-in Capital5.75% Convertible Notes	Additional Paid-in Capital1.50% Convertible Notes	Accumulated Losses	AOCI Attributable to Parent	Treasury Stock	Noncontrolling Interest
Beginning Balance at Dec. 31, 2016										$ (70,428)
Ending Balance at Mar. 31, 2017										(68,369)
Beginning Balance at Dec. 31, 2017	$ (50,976)			$ 90		$ 1,044,518			$ (223,718)	(51,280)	$ (844,030)	$ 23,444
Beginning Balance (in shares) at Dec. 31, 2017				90,159
Shares issued on vesting of restricted stock	1			$ 1
Shares issued on vesting of restricted stock (in shares)				245
Shares issued on conversion of 5.75% Convertible Notes	8,746	$ 8,746			$ 6		$ 8,740
Shares issued on conversion of 5.75% Convertible Notes (in shares)					6,412
Writeoff of equity component of 1.50% Convertible Notes			$ (23,250)					$ (23,250)
Shares repurchased on vesting of restricted stock and exercise of stock options	(25)										(25)
Compensation expense in connection with restricted stock and stock options	1,019					1,019
Payments from non-controlling interest holders, net of imputed interest	195											195
Change in redemption value of redeemable non-controlling interest	494								494
Net income	35,572								32,715			2,857
Tax benefit related to amortization of convertible notes' discount	35					35
Foreign currency translation	2,783					22				2,761
Distributions to joint ventures	(2,177)											(2,177)
Ending Balance at Mar. 31, 2018	(9,867)			$ 97		$ 1,031,084			(177,146)	(45,342)	$ (844,055)	25,495
Ending Balance (in shares) at Mar. 31, 2018				96,816
Cumulative effect of accounting change for adoption | ASC 606	$ 17,716								16,540			$ 1,176
Cumulative effect of accounting change for adoption | ASU 2016-01									$ (3,177)	$ 3,177

Unaudited Condensed Consolidat7

Unaudited Condensed Consolidated Statements of Stockholders' (Deficit) Equity (Parenthetical)	Mar. 31, 2018
5.75% Convertible Notes
Percentage of conversion of convertible notes	5.75%
1.50% Convertible Notes
Percentage of conversion of convertible notes	1.50%

Unaudited Condensed Consolidat8

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Cash flows from operating activities:
Net income from continuing operations	$ 35,572	$ 6,890
Loss from discontinued operations		(7,379)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment	558	434
Amortization of trademarks and other intangibles	96	219
Amortization of deferred financing costs and debt discount	877	1,558
Amortization of convertible note discount	3,298	4,346
Stock-based compensation expense	1,019	1,722
Provision for doubtful accounts	507	2,626
Earnings on equity investments in joint ventures	(96)	(933)
Distributions from equity investments	922	1,182
Gain on sale of trademarks, net	(1,143)
Mark to market adjustment on convertible note	(25,174)
(Gain) loss on extinguishment of debt	(4,473)	5,482
Deferred income tax provision	157	113
Foreign currency translation (gain) loss	(551)	429
Changes in operating assets and liabilities, net of business acquisitions:
Accounts receivable	19,064	2,013
Other assets – current	(1,578)	2,239
Other assets	(413)	681
Deferred revenue	3,129	586
Accounts payable and accrued expenses	(11,092)	(21,054)
Other tax liabilities	(39)	3,148
Other liabilities	(272)	220
Net cash provided by continuing operating activities	20,551	11,901
Net cash used in discontinued operating activities		(1,352)
Net cash provided by operating activities	20,551	10,549
Cash flows provided by (used in) investing activities:
Purchases of property and equipment	(282)	(179)
Acquisition of trademarks	(201)	(11)
Net cash used in continuing investing activities	(2,855)	(740)
Net cash used in discontinued investing activities		(31)
Net cash used in investing activities	(2,855)	(771)
Cash flows provided by (used in) financing activities:
Prepaid financing costs	(4,841)
Proceeds from long-term debt, net of discount and fees	95,700
Payment of long-term debt	(122,380)	(105,921)
Payment of make-whole premium on repayment of long-term debt		(6,751)
Proceeds from sale of trademarks and related notes receivable from consolidated JVs	201	2,947
Distributions to non-controlling interests	(6,587)	(2,917)
Tax benefit related to amortization of convertible notes' discount	35	22
Cost of shares repurchased on vesting of restricted stock	(25)	(843)
Net cash used in continuing financing activities	(37,897)	(113,463)
Net cash used in financing activities	(37,897)	(113,463)
Effect of exchange rate changes on cash and restricted cash	1,244	508
Net decrease in cash and cash equivalents, and restricted cash	(18,957)	(103,177)
Cash, cash equivalents, and restricted cash from continuing operations, beginning of period	114,693	314,383	$ 314,383
Cash and cash equivalents from discontinued operations, beginning of period		12,297	12,297
Cash, cash equivalents, and restricted cash, beginning of period	114,693	326,680	326,680
Cash, cash equivalents, and restricted cash, end of period	95,736	124,778	114,693
Less: Cash and cash equivalents from discontinued operations, end of period		15,403
Cash, cash equivalents, and restricted cash of continuing operations, end of period	95,736	109,375	$ 114,693
Cash paid during the period:
Income taxes (net of refunds received)	2,619	5,763
Interest	10,060	24,389
Non-cash investing and financing activities:
Make-whole premium on repayment of long-term debt		15,737
Shares issued upon conversion of debt	8,746
Iconix Canada
Cash flows provided by (used in) investing activities:
Acquisition of remaining interest in Iconix Canada	(2,700)
Complex Media
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of Complex Media	(958)
Cash flows provided by (used in) investing activities:
Proceeds from sale of Complex Media	958
Iconix MENA
Cash flows provided by (used in) investing activities:
Acquisition of additional interest in Iconix MENA		(1,800)
Iconix Southeast Asia
Cash flows provided by (used in) investing activities:
Acquisition of trademarks	(2,125)
Buffalo Brand Joint Venture
Adjustments to reconcile net income to net cash provided by operating activities:
Settlement of note receivable related to formation of Buffalo joint venture	1,141
Cash flows provided by (used in) investing activities:
Proceeds received from note	1,409
American Greetings Corporation
Cash flows provided by (used in) investing activities:
Proceeds received from note		$ 1,250
Badgley Mischka and Sharper Image Trademarks in Certain International Joint Ventures
Cash flows provided by (used in) investing activities:
Acquisition of Badgley Mischka and Sharper Image trademarks in certain international joint ventures	(1,164)
Badgley Mischka in Certain International Joint Ventures
Cash flows provided by (used in) investing activities:
Proceeds from sale of interest in Badgley Mischka in certain international joint ventures	$ 1,250

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	1. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management of Iconix Brand Group, Inc. (the “Company,” “we,” “us,” or “our”), all adjustments (consisting primarily of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three months ended March 31, 2018 (“Current Quarter”) are not necessarily indicative of the results that may be expected for a full fiscal year. The interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017. During the Current Quarter, the Company adopted seven new accounting pronouncements. Refer to Note 20 for further details. Certain reclassifications, which were immaterial, have been made to conform prior year data to the current presentation. Assessment of Going Concern These consolidated financial statements are prepared on a going concern basis that contemplates the realization of assets and discharge of liabilities in the normal course of business. Due to certain developments during the year ended December 31, 2017, including the decision by Target Corporation not to renew the existing Mossimo license agreement following its expiration in October 2018 and by Walmart, Inc. not to renew the existing Danskin Now license agreement following its expiration in January 2019, and the Company’s revised projected future earnings, the Company had initially forecasted that it would unlikely be in compliance with certain of its financial debt covenants in 2018 and beyond and that it may otherwise face possible liquidity challenges in 2018 and beyond. As a result, the Company amended its Senior Secured Term Loan to provide relief under certain covenants and implemented a cost savings plan to improve liquidity. Following the completion of an exchange (the “Exchange”) whereby the Company exchanged an aggregate principal amount of approximately $125 million of our 1.50% convertible senior subordinated notes due March 2018 (the “1.50% Convertible Notes”) with the same aggregate principal value of our new 5.75% convertible senior subordinated notes due August 2023 (the “5.75% Convertible Notes”), the Company received proceeds of the Second Delayed Draw Term Loan of $110 million, and used these proceeds, as well as cash on hand, to extinguish the remaining 1.50% Convertible Notes outstanding as of their maturity date, March 15, 2018. See Note 9 for further information on these financings. While conditions and events do exist that may raise substantial doubt about the Company’s ability to continue as a going concern for the next twelve months, management believes that (i) as a result of the aforementioned amendments to the Senior Secured Term Loan, (ii) the Exchange, (iii) the extinguishment of the 1.50% Convertible Notes at maturity, as well as (iv) implemented and planned cost savings, that its plans alleviate this substantial doubt, and therefore the management believes that it will continue as a going concern for the next twelve months. For additional information, please refer to Note 1 of Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017.

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2018
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	2. Discontinued Operations On May 9, 2017, the Company signed definitive agreements to sell its Entertainment segment for $349.1 million in cash, which included a customary working capital adjustment. The sale was completed on June 30, 2017. As a result of the sale, the Company has classified the results of its Entertainment segment as discontinued operations in its condensed consolidated statement of operations for the three months ended March 31, 2017 (“Prior Year Quarter”). The following table presents the details of the Entertainment segment for the Prior Year Quarter which were shown as income from discontinued operations, net of income taxes, in our unaudited condensed consolidated statement of operations: Three Months Ended March 31, 2018 2017 (unaudited) Licensing revenue $ — $ 27,461 Selling, general and administrative expenses — 17,850 Depreciation and amortization — 185 Operating income — 9,426 Other expenses (income): Interest expense — 6,122 Interest income — (99 ) Loss on extinguishment of debt — 15,737 Foreign currency translation loss — 143 Other expenses – net — 21,903 Loss from operations of discontinued operations before income taxes — (12,477 ) Benefit for income taxes — (5,098 ) Net loss from discontinued operations — (7,379 ) Less: Net income attributable to non- controlling interest from discontinued operations — 1,303 Loss from discontinued operations, net of income taxes $ — $ (8,682 ) The cash proceeds from the sale of the Company’s Entertainment segment were utilized by the Company to make mandatory principal prepayments on both its Senior Secured Notes and 2016 Senior Secured Term Loan (as well as a corresponding prepayment premium). As a result, and in accordance with ASC 205-20-45-6, for the Prior Year Quarter, the Company allocated interest expense of $6.1 million (which includes $0.6 million of amortization of the original issue discount on the 2016 Senior Secured Term Loan) from continuing operations to discontinued operations. Additionally, for the Prior Year Quarter, the Company allocated the prepayment premium of $15.7 million related to the 2016 Senior Secured Term Loan from continuing operations to discontinued operations on the Company’s unaudited condensed consolidated statement of operations. Refer to Note 9 for further details. The following table presents cash flow of the Entertainment segment during the Prior Year Quarter: Three Months Ended March 31, 2018 2017 Net cash used in discontinued operating activities $ — $ (1,352 ) Net cash used in discontinued investing activities $ — $ (31 ) Net cash used in discontinued financing activities $ — $ —

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2018
Revenue From Contract With Customer [Abstract]
Revenue Recognition	3. Revenue Recognition Adoption of ASC Topic 606, “Revenue from Contracts with Customers” On January 1, 2018, we adopted ASC Topic 606 – Revenue from Contracts with Customers We recorded a net increase to opening retained earnings and the corresponding amount to non-controlling interest of $16.5 million and $1.2 million, respectively, net of tax, as of January 1, 2018 due to the cumulative impact of adopting Topic 606, with the impact primarily related to our revenues associated with license agreements which have escalating guaranteed minimum royalties in the contract years of the license agreement term. The impact to revenues for the Current Quarter was a decrease of $1.9 million as a result of applying Topic 606. Revenue Recognition Licensing Revenue The Company licenses its brands across a broad range of product categories, including fashion apparel, footwear, accessories, sportswear, home furnishings and décor, and beauty and fragrance. The Company seeks licensees with the ability to produce and sell quality products in their licensed categories and to meet and exceed minimum sales and royalty payment thresholds. The Company maintains direct-to-retail and traditional wholesale licenses. Typically, in a direct-to-retail license, the Company grants exclusive rights to one of its brands to a national retailer for a broad range of product categories. Direct-to-retail licenses provide retailers with proprietary rights to national brands at favorable economics. In a traditional wholesale license, the Company grants the right to a specific brand to a single or small group of related product categories to a wholesale supplier, who is permitted to sell licensed products to multiple retailers within an approved distribution channel. The Company’s license agreements typically require the licensee to pay the Company royalties based upon net sales with guaranteed minimum royalties in the event that net sales do not reach certain specified targets. The Company’s licenses also typically require the licensees to pay to the Company certain minimum amounts for the advertising and marketing of the respective licensed brands. Licensing revenue is comprised of revenue related to the Company’s entry into various trade name license agreements that provide revenues based on minimum royalties and advertising/marketing fees and additional revenues based on a percentage of defined sales. Minimum royalty amounts are recognized as revenue on a straight-line basis over the full contract term. Minimum royalties that escalate on an annual basis over the contract term are recognized on a straight-line basis over the full contract term. Royalties exceeding the defined minimum amounts in a specific contract year (sales-based royalties), as defined in each license agreement, are recognized only in the subsequent periods to when the minimum guarantee for the contract year has been achieved and when the later of the following events occur: (i) the subsequent sale occurs, or (ii) the performance obligation to which some or all of the sales-based royalty has been allocated has been satisfied (or partially satisfied). Within the Company's International segment, the Umbro business purchases replica soccer jerseys for resale to certain licensees. The Company generally does this as an accommodation to its licensees to consolidate ordering from the manufacturers. The revenue associated with such activity is included in licensing revenue and was approximately $2.0 million in the Current Quarter as compared to none in the Prior Year Quarter. The associated cost of goods sold is included in selling general and administrative expenses and was approximately $1.9 million in the Current Quarter as compared to none in the Prior Year Quarter. Revenue for these sales are recognized upon the transfer of control of the promised product to the customer or licensee in an amount that reflects the consideration that we expect to receive in exchange for these products. The following table presents our revenues disaggregated by license type: Three Months Ended March 31, 2018 2017 Licensing revenue by license type: Direct-to-retail license $ 21,213 $ 34,538 Wholesale licenses 25,138 24,155 Other licenses ( 1) 2,197 29 $ 48,548 $ 58,722 (1) Included in Other licenses for the Current Quarter is $2.1 million of revenue associated with the Umbro business purchases discussed above of which there was no comparable amount in Prior Year Quarter. The following table represents our revenues disaggregated by geography: Three Months Ended March 31, 2018 2017 Total licensing revenue by geographic region: United States $ 32,877 $ 44,618 Other (1) 15,671 14,104 $ 48,548 $ 58,722 (1) No single country represented 10% of the Company’s revenues in the periods presented. Remaining Performance Obligation We enter into long-term license agreements with our licensees across all operating segments. Revenues are recognized on a straight line basis consistent with the nature, timing and extent of our services, which primarily relate to the ongoing brand management and maintenance of the intellectual property. As of April 1, 2018, the Company and its joint ventures had a contractual right to receive over $470 million of aggregate minimum licensing revenue through the balance of all of their current licenses, excluding any renewals. As of March 31, 2018, future minimum license revenue to be recognized is as follows: $101.0 million, $104.9 million, $76.0 million, $42.2 million, $35.8 million and $111.2 million for the remainder of FY 2018, FY 2019, FY 2020, FY 2021, FY 2022 and thereafter, respectively. Contract Balances Timing of revenue recognition may differ from the timing of invoicing to licensees. We record a receivable when amounts are contractually due or when revenue is recognized prior to invoicing. Deferred revenue is recorded when amounts are contractually due prior to satisfying the performance obligations of the contracts. For multi-year license agreements, as the performance obligation is providing the licensee with the right of access to the Company’s intellectual property for the contractual term, the Company uses a time lapse measure of progress and straight lines the guaranteed minimum royalties over the contract term. Contract Asset We record contract assets when revenue is recognized in advance of cash payment being due from our licensees. Contract assets due within one year of the most recent balance sheet date are recorded within Other assets – current and long term contract assets are recorded within Other assets on the Company’s condensed consolidated balance sheet. As of March 31, 2018, our contract assets – current and long term contract assets were $6.4 million and $13.7 million, respectively, which has been included within other assets – current and other assets, respectively, in the Company’s condensed consolidated balance sheet. Deferred Revenue We record deferred revenue when cash payment is received or due in advance of our performance, including amounts which are refundable. Advanced royalty payments are recognized ratably over the period indicated by the terms of the license and are reflected in the Company’s consolidated balance sheet in deferred revenue at the time the payment is received. The increase in deferred revenues for the three months ended March 31, 2018 is primarily driven by cash payments received or due in advance of satisfying our performance obligations, offset by $2.2 million of revenues recognized that were included in the deferred revenue balance at the beginning of the period.

Goodwill and Trademarks and Oth

Goodwill and Trademarks and Other Intangibles, net	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Trademarks and Other Intangibles, net	4. Goodwill and Trademarks and Other Intangibles, net Goodwill There were no changes in goodwill during the Current Quarter or Prior Year Quarter. The annual evaluation of the Company’s goodwill, by segment, is typically performed as of October 1, the beginning of the Company’s fourth fiscal quarter. There was no impairment of the Company’s goodwill during the Current Quarter or the Prior Year Quarter. Trademarks and Other Intangibles, net Trademarks and other intangibles, net, consist of the following: March 31, 2018 December 31, 2017 Estimated Lives in Years Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Indefinite-lived trademarks Indefinite $ 468,435 $ — $ 465,391 $ — Definite-lived trademarks 10-15 8,958 8,927 8,958 8,917 Non-compete agreements 2-15 — — 940 940 Licensing contracts 1-9 1,034 825 3,412 3,122 $ 478,427 $ 9,752 $ 478,701 $ 12,979 Trademarks and other intangibles, net $ 468,675 $ 465,722 The trademarks of Candie’s, Bongo, Joe Boxer, Rampage, Mudd, London Fog, Mossimo, Ocean Pacific, Danskin, Rocawear, Cannon, Royal Velvet, Fieldcrest, Charisma, Starter, Waverly, Ecko, Zoo York, Ed Hardy, Umbro, Modern Amusement, Buffalo, Lee Cooper, Hydraulic and Pony have been determined to have an indefinite useful life. Each of these intangible assets are tested for impairment annually and as needed on an individual basis bifurcated into separate single units of accounting representing domestic and international assets, with any related impairment charge recorded to the income statement at the time of determining such impairment. The annual evaluation of the Company’s indefinite-lived trademarks is typically performed as of October 1, the beginning of the Company’s fourth fiscal quarter. In accordance with ASC 350, there was no impairment of the indefinite-lived trademarks during the Current Quarter or Prior Year Quarter. Further, in accordance with ASC 360, there were no impairment charges to the Company’s definite-lived trademarks during the Current Quarter or the Prior Year Quarter. During the Current Quarter, the Company completed the sale of the Badgley Mischka and Sharper Image intellectual property and related assets in the Iconix Southeast Asia, Iconix MENA and Iconix Europe joint ventures. Refer to Note 6 for further details. Other amortizable intangibles primarily include non-compete agreements and contracts, which are amortized on a straight-line basis over their estimated useful lives of 1 to 15 years. Certain trademarks are amortized using estimated useful lives of 10 to 15 years with no residual values. Amortization expense for intangible assets for the Current Quarter was approximately $0.1 million as compared to amortization expense for intangible assets of $0.2 million for the Prior Year Quarter.

Joint Ventures and Investments

Joint Ventures and Investments	3 Months Ended
	Mar. 31, 2018
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Joint Ventures and Investments	5. Joint Ventures and Investments Joint Ventures As of March 31, 2018, the following joint ventures are consolidated with the Company: Entity Name Date of Original Formation Iconix's Ownership % as of March 31, 2018 Joint Venture Partner Put / Call Options, as applicable (2) Danskin China Limited October 2016 100% Li-Ning (China) Sports Goods Co. Ltd. — Umbro China Limited July 2016 95% Hong Kong MH Umbro International Co. Ltd. Call Options US Pony Holdings, LLC February 2015 75% Anthony L&S Athletics, LLC — Iconix MENA Ltd. (1) December 2014 55% Global Brands Group Asia Limited Put / Call Options Iconix Israel, LLC (1) November 2013 50% MGS — Iconix Europe LLC (1) December 2009 51% Global Brands Group Asia Limited Put / Call Options Hydraulic IP Holdings LLC (1) December 2014 51% (3) Top On International — Diamond Icon (1) March 2013 51% Albion Agencies Ltd. Buffalo brand joint venture (1) February 2013 51% Buffalo International — Icon Modern Amusement, LLC (1) December 2012 51% Dirty Bird Productions — Hardy Way, LLC May 2009 85% Donald Edward Hardy — (1) The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity. (2) (3) As part of the formation of certain joint ventures, the Company entered into arrangements whereby the joint venture partner paid for its investment in the joint venture entity through payment of a portion of the purchase price in cash at closing and the remainder due over a pre-determined period of time. As of March 31, 2018, the following amounts due from such joint venture partners remain recorded on the Company’s consolidated balance sheet: Entity Joint Venture Partner Amount Recorded in Iconix India joint venture Reliance Brands Ltd. $ 1,000 Other Assets - Current Investments Equity Method Investments Entity Name Date of Original Formation / Investment Partner Put / Call Options, as applicable (3) Iconix Australia, LLC (1) September 2013 Pac Brands USA, Inc. Put / Call Options Iconix India joint venture (1) June 2012 Reliance Brands Ltd. — Iconix SE Asia, Ltd. (1) October 2013 Global Brands Group Asia Limited Put / Call Options MG Icon (1) March 2010 Purim LLC — Galore Media, Inc. (1)(2) April 2016 Various minority interest holders — (1) The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, that the joint venture is not a VIE and not subject to consolidation. The Company has recorded its investment under the equity method of accounting since inception. (2) In September 2017, the Company entered into a stock repurchase agreement with Galore Media, Inc. (“Galore”) whereby the Company sold, and Galore agreed to repurchase, the Company’s 50,050 outstanding shares of Series A Preferred Stock of Galore for $0.5 million. Pursuant to the stock repurchase agreement, the Company received $0.3 million upon execution of the agreement and the remaining $0.2 million was received in December 2017. Additionally, pursuant to the stock repurchase agreement, the Company forfeited and surrendered the 46,067 shares of Series A Preferred Stock of Galore that were received in April 2016 upon the Company’s exercise of the initial warrant. All remaining warrants to purchase additional shares of Series A Preferred Stock of Galore were also forfeited as part of the stock repurchase arrangement. This transaction resulted in the Company’s ownership interest in Galore being reduced to zero. (3) Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for material terms of the put and call options associated with the Company’s joint venture. Additionally, through its ownership of Iconix China Holdings Limited, the Company has equity interests in the following private companies which are accounted for as equity method investments: Brands Placed Partner Ownership by Iconix China Value of Investment As of March 31, 2018 Candie’s Candies Shanghai Fashion Co. Ltd. 20% $ 10,343 Marc Ecko Shanghai MuXiang Apparel & Accessory Co. Limited 15% 2,270 Material Girl Ningo Material Girl Fashion Co. Ltd. 20% 2,129 Ecko Unltd Ai Xi Enterprise (Shanghai) Co. Limited 20% 10,568 $ 25,310 Other Equity Investments Entity Name Date of Original Formation / Investment China Outfitters Holdings Ltd. (3) September 2008 Marcy Media Holdings, LLC (1) July 2013 Complex Media (1)(2) September 2013 iBrands International, LLC (1) April 2014 (1) Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. (2) (3)

Gains on Sale of Trademarks, Ne

Gains on Sale of Trademarks, Net	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Gains on Sales of Trademarks, Net	6. Gains on Sale of Trademarks, Net The following table details transactions comprising gains on sale of trademarks, net in the condensed consolidated statement of operations: Three Months Ended March 31, 2018 2017 Interest in Sharper Image trademark in Iconix Southeast Asia (1) $ 236 $ — Interest in Sharper Image trademark in Iconix Europe (1) 352 — Interest in Sharper Image trademark in Iconix MENA (1) 250 — Interest in Badgley Mischka trademark in Iconix Southeast Asia (2) 478 — Interest in Badgley Mischka trademark in Iconix Europe (2) (244 ) — Interest in Badgley Mischka trademark in Iconix MENA (2) 71 — Net gains on sale of trademarks $ 1,143 $ — (1) In December 2016, the Company sold its rights to the Sharper Image intellectual property and related assets to 360 Holdings, Inc. The Sharper Image intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined gain of approximately $0.8 million upon final execution of the agreement for the sale of the Sharper Image intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures. (2) In February 2016, the Company sold its rights to the Badgley Mischka intellectual property and related assets to Titan Industries, Inc. in partnership with the founders, Mark Badgley and James Mischka, and the apparel license MJCLK LLC. The Badgley Mischka intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined net gain of approximately $0.3 million upon final execution of the agreement for the sale of the Badgley Mischka intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	7. Fair Value Measurements ASC 820 “Fair Value Measurements” (“ASC 820”), establishes a framework for measuring fair value and requires expanded disclosures about fair value measurement. While ASC 820 does not require any new fair value measurements in its application to other accounting pronouncements, it does emphasize that a fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair value measurements, ASC 820 established the following fair value hierarchy that distinguishes between (1) market participant assumptions developed based on market data obtained from sources independent of the reporting entity (observable inputs) and (2) the reporting entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs): Level 1: Observable inputs such as quoted prices for identical assets or liabilities in active markets Level 2: Other inputs that are observable directly or indirectly, such as quoted prices for similar assets or liabilities or market-corroborated inputs Level 3: Unobservable inputs for which there is little or no market data and which requires the owner of the assets or liabilities to develop its own assumptions about how market participants would price these assets or liabilities The valuation techniques that may be used to measure fair value are as follows: (A) Market approach - Uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities (B) Income approach - Uses valuation techniques to convert future amounts to a single present amount based on current market expectations about those future amounts, including present value techniques, option-pricing models and excess earnings method (C) Cost approach - Based on the amount that would currently be required to replace the service capacity of an asset (replacement cost) To determine the fair value of certain financial instruments, the Company relies on Level 2 inputs generated by market transactions of similar instruments where available, and Level 3 inputs using an income approach when Level 1 and Level 2 inputs are not available. The Company’s assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the valuation of financial assets and financial liabilities and their placement within the fair value hierarchy. Hedge Instruments From time to time, the Company may purchase hedge instruments to mitigate income statement risk and cash flow risk of revenue and receivables. As of March 31, 2018, the Company had no hedge instruments. Financial Instruments As of March 31, 2018 and December 31, 2017, the fair values of cash, receivables and accounts payable approximated their carrying values due to the short-term nature of these instruments. The fair value of notes receivable and notes payable from and to our joint venture partners approximate their carrying values. The fair value of our other equity investments is not readily determinable and it is not practical to obtain the information needed to determine the value. However, there has been no indication of an impairment of these other equity investments as of March 31, 2018 or December 31, 2017. The estimated fair values of other financial instruments subject to fair value disclosures, determined based on Level One inputs including broker quotes or quoted market prices or rates for the same or similar instruments and the related carrying amounts are as follows: March 31, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Long-term debt, including current portion (1) $ 758,351 $ 769,136 $ 800,842 $ 747,818 (1) Carrying amounts include aggregate unamortized debt discount and debt issuance costs. Additionally, the fair value of the available-for-sale securities acquired as part of the 2015 purchase of our joint venture partners’ interest in Iconix China was approximately $1.0 million as of March 31, 2018. Due to the adoption of ASU 2016-01, changes in fair value of this other equity investment will be prospectively recorded in the Company’s condensed consolidated statement of operations in future periods. Financial instruments expose the Company to counterparty credit risk for nonperformance and to market risk for changes in interest. The Company manages exposure to counterparty credit risk through specific minimum credit standards, diversification of counterparties and procedures to monitor the amount of credit exposure. The Company’s financial instrument counterparties are investment or commercial banks with significant experience with such instruments as well as certain of our joint venture partners – see Note 5. Non-Financial Assets and Liabilities The Company accounts for non-recurring adjustments to the fair values of its non-financial assets and liabilities under ASC 820 using a market participant approach. The Company uses a discounted cash flow model with Level 3 inputs to measure the fair value of its non-financial assets and liabilities. The Company also adopted the provisions of ASC 820 as it relates to purchase accounting for its acquisitions. The Company has goodwill, which is tested for impairment at least annually, as required by ASC 350- “Intangibles- Goodwill and Other” (“ASC 350”). Further, in accordance with ASC 350, the Company’s indefinite-lived trademarks are tested for impairment at least annually, on an individual basis as separate single units of accounting. Similarly, consistent with ASC 360- “Property, Plant and Equipment” (“ASC 360”), as it relates to accounting for the impairment or disposal of long-lived assets, the Company assesses whether or not there is impairment of the Company’s definite-lived trademarks. There was no impairment, and therefore no write-down, of any of the Company’s long-lived assets during the Current Quarter or the Prior Year Quarter.

Fair Value Option

Fair Value Option	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Option	8. Fair Value Option During the Current Quarter, the Company elected to account for its 5.75% Convertible Notes under the fair value option. The fair value carrying amount and the contractual principal outstanding balance of the 5.75% Convertible Notes accounted for under the fair value option as of March 31, 2018 is $109.5 million and $116.2 million, respectively. The change of $24.4 million in the fair value of the 5.75% Convertible Notes accounted for under the fair value option are included in the Company’s condensed consolidated statement of operations for the Current Quarter within Other Income. The primary reason for electing the fair value option is for simplification and cost-benefit considerations of accounting for the 5.75% Convertible Notes (the hybrid financial instrument) at fair value in its entirety versus bifurcation of the embedded derivatives. The 5.75% Convertible Notes contain bifurcatable embedded derivatives and do not require settlement by physical delivery of non-financial assets. The significant inputs to the valuation of the 5.75% Convertible Notes at fair value are Level 1 inputs as they are based on the quoted prices of the notes in the active market.

Debt Arrangements

Debt Arrangements	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Debt Arrangements	9. Debt Arrangements The Company’s debt obligations consist of the following: March 31, 2018 December 31, 2017 Senior Secured Notes $ 397,500 $ 408,174 1.50% Convertible Notes — 233,898 Variable Funding Note, net of original issue discount 92,294 91,363 Senior Secured Term Loan, net of original issue discount 170,473 74,813 5.75% Convertible Notes (1) 109,455 — Unamortized debt issuance costs (11,371 ) (7,406 ) Total debt 758,351 800,842 Less current maturities 46,549 44,349 Total long-term debt $ 711,802 $ 756,493 (1) On February 12, 2018, the Company entered into the Exchange Agreements and consummated the Note Exchange on February 22, 2018, pursuant to which the Company exchanged approximately $125.0 million aggregate principal amount of its 1.50% Convertible Notes for 5.75% Convertible Notes issued by the Company in an aggregate principal amount of approximately $125.0 million. See below for further details. Senior Secured Notes and Variable Funding Note Senior Secured Notes On November 29, 2012, Icon Brand Holdings, Icon DE Intermediate Holdings LLC, Icon DE Holdings LLC and Icon NY Holdings LLC, each a limited-purpose, bankruptcy remote, wholly-owned direct or indirect subsidiary of the Company, (collectively, the “Co-Issuers”) issued $600.0 million aggregate principal amount of 2012 Senior Secured Notes in an offering exempt from registration under the Securities Act. Simultaneously with the issuance of the 2012 Senior Secured Notes, the Co-Issuers also entered into a revolving financing facility of Variable Funding Notes, which allows for the funding of up to $100 million of Variable Funding Notes and certain other credit instruments, including letters of credit. The Variable Funding Notes were issued under the Indenture and allow for drawings on a revolving basis. Drawings and certain additional terms related to the Variable Funding Notes are governed by the Variable Funding Note Purchase Agreement, among the Co-Issuers, Iconix, as manager, certain conduit investors, financial institutions and funding agents, and Barclays Bank PLC, as provider of letters of credit, as swing line lender and as administrative agent. The Variable Funding Notes will be governed, in part, by the Variable Funding Note Purchase Agreement and by certain generally applicable terms contained in the Indenture. Interest on the Variable Funding Notes will be payable at per annum rates equal to the CP Rate, Base Rate or Eurodollar Rate, as defined in the Variable Funding Note Purchase Agreement. On June 21, 2013, the Co-Issuers issued $275.0 million aggregate principal amount of 2013 Senior Secured Notes in an offering exempt from registration under the Securities Act. The Senior Secured Notes and the Variable Funding Notes are referred to collectively as the “Securitization Notes.” The Securitization Notes were issued in securitization transactions pursuant to which the Securitized Assets, were transferred to and are currently held by the Co-Issuers. The Securitized Assets do not include revenue generating assets of (x) the Iconix subsidiaries that own the Badgley Mischka trademarks, the Ecko Unltd trademarks, the Mark Ecko trademarks, the Umbro trademarks, and the Lee Cooper trademarks, (y) the Iconix subsidiaries that own Iconix’s other brands outside of the United States and Canada or (z) the joint ventures in which Iconix and certain of its subsidiaries have investments and which own the Artful Dodger trademarks, the Modern Amusement trademarks and the Buffalo trademarks, the Pony trademarks, the Hydraulic trademarks and a 50% interest in the Ice Cream trademarks, and the Billionaire Boys Club trademarks. The Securitization Notes were issued under the Securitization Notes Indenture among the Co-Issuers and Citibank, N.A., as Trustee and securities intermediary. The Securitization Notes Indenture allows the Co-Issuers to issue additional series of notes in the future subject to certain conditions. In February 2015, the Company received $100.0 million proceeds from the Variable Funding Notes. There is a commitment fee on the unused portion of the Variable Funding Notes facility of 0.5% per annum. It was anticipated that any outstanding principal of and interest on the Variable Funding Notes would be repaid in full on or prior to January 2018 prior to the amendment entered into on August 18, 2017 as described below. Following the anticipated repayment date in January 2020, additional interest will accrue on the Variable Funding Notes equal to 5% per annum. The Variable Funding Notes and other credit instruments issued under the Variable Funding Note Purchase Agreement are secured by the collateral described below. On August 18, 2017, the Company entered into an amendment to the Securitization Notes Supplemental Indenture to, among other things, (i) extend the anticipated repayment date for the Variable Funding Notes from January 2018 to January 2020, (ii) decrease the L/C Commitment and the Swingline Commitment (as such terms are defined in the amendment) available under the Variable Funding Notes to $0 as of the closing date, (iii) replace Barclays Bank PLC with Guggenheim Securities Credit Partners, LLC, as provider of letters of credit, as swingline lender and as administrative agent under the purchase agreement and (iv) provide that, upon the disposition of intellectual property assets by the Co-Issuers as permitted by the Securitization Notes Base Indenture, (x) the holders of the Variable Funding Notes will receive a mandatory prepayment, pro rata based on the amount of Variable Funding Notes held by such holder, and (y) the maximum commitment will be permanently reduced by the amount of the mandatory prepayment. While the Securitization Notes are outstanding, payments of interest are required to be made on the Senior Secured Notes on a quarterly basis. To the extent funds are available, principal payments in the amount of $10.5 million and $4.8 million are required to be made on the 2012 Senior Secured Notes and 2013 Senior Secured Notes, respectively, on a quarterly basis. The legal final maturity date of the Senior Secured Notes is in January of 2043, but it is anticipated that, unless earlier prepaid to the extent permitted under the Securitization Notes Indenture, the Senior Secured Notes will be repaid in January of 2020. If the Co-Issuers have not repaid or refinanced the Senior Secured Notes prior to the anticipated repayment date, additional interest will accrue on the Senior Secured Notes at a rate equal to the greater of (A) 5% per annum and (B) a per annum interest rate equal to the excess, if any, by which the sum of (i) the yield to maturity (adjusted to a quarterly bond-equivalent basis), on the anticipated repayment date of the United States treasury security having a term closest to 10 years plus (ii) 5% plus (iii) with respect to the 2012 Senior Secured Notes, 3.4%, or with respect to the 2013 Senior Secured Notes, 3.14%, exceeds the original interest rate. The Senior Secured Notes rank pari passu with the Variable Funding Notes. Pursuant to the Securitization Notes Indenture, the Securitization Notes are the joint and several obligations of the Co-Issuers only. The Securitization Notes are secured under the Indenture by a security interest in substantially all of the assets of the Co-Issuers (the “Collateral”), which includes, among other things, (i) intellectual property assets, including the U.S. and Canadian registered and applied for trademarks for the following brands and other related IP assets: Candie’s, Bongo, Joe Boxer (excluding Canadian trademarks, none of which are owned by Iconix), Rampage, Mudd, London Fog (other than the trademark for outerwear products sold in the United States), Mossimo, Ocean Pacific and OP, Danskin and Danskin Now, Rocawear, Starter, Waverly, Fieldcrest, Royal Velvet, Cannon, Charisma, and Sharper Image (other than for a “Sharper Image” branded website or catalog in the United States and other specified jurisdictions); (ii) the rights (including the rights to receive payments) and obligations under all license agreements for use of those trademarks; (iii) the following equity interests in the following joint ventures: an 85% interest in Hardy Way LLC which owns the Ed Hardy brand, a 50% interest in MG Icon LLC which owns the Material Girl and Truth or Dare brands, and a 100% interest in ZY Holdings LLC which owns the Zoo York brand; and (iv) certain cash accounts established under the Securitization Notes Indenture. If the Company contributes an Additional IP Holder to Icon Brand Holdings LLC or Icon DE Intermediate Holdings LLC, that Additional IP Holder will enter into a guarantee and collateral agreement in a form provided for in the Securitization Notes Base Indenture pursuant to which such Additional IP Holder will guarantee the obligations of the Co-Issuers in respect of any Securitization Notes issued under the Securitization Notes Indenture and the other related documents and pledge substantially all of its assets to secure those guarantee obligations pursuant to a guarantee and collateral agreement. Neither the Company nor any subsidiary of the Company, other than the Securitization Entities, will guarantee or in any way be liable for the obligations of the Co-Issuers under the Securitization Notes Indenture or the Securitization Notes. The Securitization Notes are subject to a series of covenants and restrictions customary for transactions of this type, including (i) that the Co-Issuers maintain specified reserve accounts to be used to make required payments in respect of the Securitization Notes, (ii) provisions relating to optional and mandatory prepayments, including mandatory prepayments in the event of a change of control (as defined in the Securitization Notes Supplemental Indentures) and the related payment of specified amounts, including specified make-whole payments in the case of the Senior Secured Notes under certain circumstances, (iii) certain indemnification payments in the event, among other things, the transfers of the assets pledged as collateral for the Securitization Notes are in stated ways defective or ineffective and (iv) covenants relating to recordkeeping, access to information and similar matters. As of March 31, 2018, the Company is in compliance with all covenants under the Securitization Notes. The Securitization Notes are also subject to customary rapid amortization events provided for in the Securitization Notes Indenture, including events tied to (i) the failure to maintain a stated debt service coverage ratio, which tests the amount of net cash flow generated by the assets of the Co-Issuers against the amount of debt service obligations of the Co-Issuers (including any commitment fees and letter of credit fees with respect to the Variable Funding Notes, due and payable accrued interest, and due and payable scheduled principal payments on the Senior Secured Notes), (ii) certain manager termination events, (iii) the occurrence of an event of default and (iv) the failure to repay or refinance the Securitization Notes on the anticipated repayment date. If a rapid amortization event were to occur, Icon DE Intermediate Holdings LLC and Icon Brand Holdings LLC would be restricted from declaring or paying distributions on any of its limited liability company interests. The Company used approximately $150.4 million of the proceeds received from the issuance of the 2012 Senior Secured Notes to repay amounts outstanding under its revolving credit facility (see below) and approximately $20.9 million to pay the costs associated with the 2012 Senior Secured Notes financing transaction. In addition, approximately $218.3 million of the proceeds from the 2012 Senior Secured Notes were used for the Company’s purchase of the Umbro brand. The Company used approximately $7.2 million of the proceeds received from the issuance of the 2013 Senior Secured Notes to pay the costs associated with the 2013 Senior Secured Notes securitized financing transaction. In June 2014, the Company sold the “sharperimage.com” domain name and the exclusive right to use the Sharper Image trademark in connection with the operation of a branded website and catalog distribution in specified jurisdictions, in which the Senior Secured Notes had a security interest pursuant to the Indenture. As a result of this permitted disposition, the Company paid an additional $1.6 million in principal in July 2014. In January 2017, in connection with the sale of the Sharper Image intellectual property and related assets, the Company made a mandatory principal prepayment on its Senior Secured Notes of $36.7 million. The Company wrote off a pro-rata portion of the Senior Secured Notes’ deferred financing costs of $0.5 million. As a result of this transaction, the Company recognized a loss on extinguishment of debt of $0.5 million which has been recorded on the Company’s consolidated statement of operations. Additionally, the quarterly principal payments on the 2012 Senior Secured notes and 2013 Senior Secured Notes were reduced to $9.9 million and $4.5 million, respectively. In July 2017, in connection with the sale of the businesses underlying the Entertainment segment, the Company made a mandatory principal prepayment on its Senior Secured Notes of $152.2 million. The Company wrote off a pro-rata portion of the Senior Secured Notes’ deferred financing costs of $2.0 million as well as paid a prepayment penalty of $0.3 million. As a result of this transaction, the Company recognized a loss on extinguishment of debt of $2.3 million which has been allocated to discontinued operations on the Company’s consolidated statement of operations in FY 2017. Additionally, the quarterly principal payments on the 2012 Senior Secured Notes and 2013 Senior Secured Notes were reduced to $7.3 million and $3.4 million, respectively. As of March 31, 2018 and December 31, 2017, the total outstanding principal balance of the Securitization Notes was $497.5 million and $508.2 million, respectively, of which $42.7 million is included in the current portion of long-term debt on the consolidated balance sheet for both periods. As of March 31, 2018 and December 31, 2017, $42.9 million and $29.9 million, respectively, is included in restricted cash on the consolidated balance sheet and represents short-term restricted cash consisting of collections on behalf of the Securitized Assets, restricted to the payment of principal, interest and other fees on a quarterly basis under the Senior Secured Notes. For the Current Quarter and the Prior Year Quarter, cash interest expense relating to the Senior Secured Notes was approximately $5.6 million and $8.1 million, respectively. 1.50% Convertible Notes On March 18, 2013, the Company completed the issuance of $400.0 million principal amount of the Company’s 1.50% Convertible Notes in a private offering to certain institutional investors which was exempt from registration under the Securities Act. The net proceeds received by the Company from the offering, excluding the net cost of hedges and sale of warrants (described below) and including transaction fees, were approximately $390.6 million. During FY 2016, the Company repurchased $104.9 million par value of the 1.50% Convertible Notes with a combination of $36.7 million in cash (including interest and trading fees) and the issuance of approximately 7.4 million shares of the Company’s common stock. The Company accounted for this transaction in accordance with ASC 470-20 resulting in the recognition of a $9.6 million gain which is included in gain on extinguishment of debt, net in the Company’s consolidated statement of income for FY 2016, and a reacquisition of approximately $1.2 million of the embedded conversion option recorded within additional paid in capital on the Company’s consolidated balance sheet. During FY 2017, the Company repurchased $58.9 million par value of the 1.50% Convertible Notes for $59.3 million in cash (including interest and trading fees). The Company accounted for this transaction in accordance with ASC 470-20 resulting in the recognition of a $1.5 million loss which was included in loss on extinguishment of debt in the Company’s consolidated statement of operations during FY 2017. On February 22, 2018, the Company exchanged $125 million of aggregate principal amount of 1.50% Convertible Notes for $125 million of aggregate principal amount of 5.75% Convertible Notes, and on March 15, 2018 (the maturity date), the Company repaid the remaining outstanding principal balance of $111.2 million of the 1.50% Convertible Notes, with the proceeds of the Second Delayed Draw Term Loan of $110 million plus cash on hand, effectively extinguishing the 1.50% Convertible Notes by its terms. The exchange of the 1.50% Convertible Notes for the 5.75% Convertible Notes was accounted for as a debt extinguishment in accordance with ASC 470 and resulted in the Company recording a gain on extinguishment of debt of $4.5 million, which is recorded in the Company’s condensed consolidated statement of operations for the Current Quarter. The 1.50% Convertible Notes bore interest at an annual rate of 1.50%, payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2013. However, the Company recognized an effective interest rate of 6.50% on the carrying amount of the 1.50% Convertible Notes. The effective rate was based on the rate for a similar instrument that does not have a conversion feature. The 1.50% Convertible Notes were convertible into cash and, if applicable, shares of the Company’s common stock based on a conversion rate of 32.4052 shares of the Company’s common stock, subject to customary adjustments, per $1,000 principal amount of the 1.50% Convertible Notes (which is equal to an initial conversion price of approximately $30.86 per share) only under the following circumstances: (1) during any fiscal quarter beginning after December 15, 2017 (and only during such fiscal quarter), if the closing price of the Company’s common stock for at least 20 trading days in the 30 consecutive trading days ending on and including the last trading day of the immediately preceding fiscal quarter was more than 130% of the conversion price per share, which was $1,000 divided by the then applicable conversion rate; (2) during the five consecutive business day period immediately following any five consecutive trading day period in which the trading price per $1,000 principal amount of the 1.50% Convertible Notes for each day of that period was less than 98% of the product of (a) the closing price of the Company’s common stock for each day in that period and (b) the conversion rate per $1,000 principal amount of the 1.50% Convertible Notes; (3) if specified distributions to holders of the Company’s common stock were made, as set forth in the 1.50% Notes Indenture; (4) if a “change of control” or other “fundamental change,” each as defined in the 1.50% Notes Indenture, occurred; and (5) during the 90 day period prior to maturity of the 1.50% Convertible Notes. If the holders of the 1.50% Convertible Notes exercised the conversion provisions under the circumstances set forth, the Company would have needed to remit the lower of the principal balance of the 1.50% Convertible Notes or their conversion value to the holders in cash. As such, the Company would have been required to classify the entire amount outstanding of the 1.50% Convertible Notes as a current liability in the following quarter. The evaluation of the classification of amounts outstanding associated with the 1.50% Convertible Notes occurred every quarter. Upon conversion, a holder would receive an amount in cash equal to the lesser of (a) the principal amount of the 1.50% Convertible Note or (b) the conversion value, determined in the manner set forth in the 1.50% Notes Indenture. If the conversion value exceeded the principal amount of the 1.50% Convertible Notes on the conversion date, the Company would also have been required to deliver, at its election, cash or the Company’s common stock or a combination of cash and the Company’s common stock for the conversion value in excess of the principal amount. In the event of a change of control or other fundamental change, the holders of the 1.50% Convertible Notes could require the Company to purchase all or a portion of their 1.50% Convertible Notes at a purchase price equal to 100% of the principal amount of the 1.50% Convertible Notes, plus accrued and unpaid interest, if any. Holders of the 1.50% Convertible Notes who converted their 1.50% Convertible Notes in connection with a fundamental change may have been entitled to a make-whole premium in the form of an increase in the conversion rate. Pursuant to guidance issued under ASC 815- “Derivatives and Hedging” (“ASC 815”), the 1.50% Convertible Notes are accounted for as convertible debt in the accompanying consolidated balance sheet and the embedded conversion option in the 1.50% Convertible Notes has not been accounted for as a separate derivative. For a discussion of the effects of the 1.50% Convertible Notes and the 1.50% Convertible Notes Hedges and Sold Warrants defined and discussed below on earnings per share, see Note 11. For the Current Quarter and Prior Year Quarter, the Company recorded additional non-cash interest expense of approximately $2.4 million and $3.2 million, respectively, representing the difference between the stated interest rate on the 1.50% Convertible Notes and the rate for a similar instrument that does not have a conversion feature. For the Current Quarter and Prior Year Quarter, the Company recorded cash interest expense relating to the 1.50% Convertible Notes of approximately $0.7 million and $1.1 million, respectively. 2016 Senior Secured Term Loan On March 7, 2016, the Company entered into a credit agreement (the “Credit Agreement”), among IBG Borrower LLC, the Company’s wholly-owned direct subsidiary, as borrower (“IBG Borrower”), the Company and certain wholly-owned subsidiaries of IBG Borrower, as guarantors (the “Guarantors”), Cortland Capital Market Services LLC, as administrative agent and collateral agent (“Cortland”) and the lenders party thereto from time to time (the “Lenders”), including CF ICX LLC and Fortress Credit Co LLC (“Fortress”) which was a privately negotiated transaction. Pursuant to the Credit Agreement, the Lenders are providing to IBG Borrower a 2016 Senior Secured Term Loan (the “2016 Senior Secured Term Loan”), scheduled to mature on March 7, 2021, in an aggregate principal amount of $300 million and bearing interest at LIBOR (with a floor of 1.50%) plus an applicable margin of 10% per annum. The net cash proceeds of the 2016 Senior Secured Term Loan, which were approximately $264.2 million (after deducting financing, investment banking and legal fees), were, pursuant to the terms of the Credit Agreement, deposited by the Lenders into an escrow account on April 4, 2016. IBG Borrower deposited into the escrow account certain additional funds, so that the total amount of cash on deposit in the escrow account was sufficient to pay all outstanding obligations, plus accrued interest, under the Company’s 2.50% Convertible Notes due June 2016. In accordance with the terms of the 2016 Senior Secured Term Loan, the funds in the escrow account were used to repay the 2.50% Convertible Notes (see above discussion on repayment of the 2.50% Convertible Notes) on or before their maturity, with any remaining funds going toward general corporate purposes permitted under the terms of the Credit Agreement. In December 2016, as a result of the sale of the Sharper Image intellectual property and related assets and in accordance with the Credit Agreement, the Company was required to make a mandatory principal prepayment of $28.7 million and a corresponding prepayment premium of $4.3 million. The Company wrote off a pro-rata portion of the 2016 Senior Secured Term Loan’s original issue discount and deferred financing costs of $2.1 million and $1.0 million, respectively. As a result of this transaction, the Company recognized a loss on extinguishment of debt of $7.4 million which has been recorded on the Company’s consolidated statement of operations. In January 2017, the Company made a voluntary prepayment and an additional mandatory prepayment of $23.0 million and $23.5 million, respectively, as well as a corresponding prepayment premium of $3.4 million and $3.4 million, respectively. As the Company was contractually obligated to pay the prepayment premium prior to December 31, 2016, the Company recorded the aggregate $6.8 million of prepayment premium in accrued expenses on the Company’s consolidated balance sheet as of December 31, 2016, with a corresponding amount recorded in loss on extinguishment of debt on the Company’s consolidated statement of operations for FY 2016. For each of the voluntary prepayment of $23.0 million and the mandatory prepayment of $23.5 million, the Company wrote off a pro-rata portion of the 2016 Senior Secured Term Loan’s original issue discount and deferred financing costs of $1.7 million and $0.8 million, respectively, which resulted in an aggregate loss on extinguishment of debt of $5.0 million recorded in the Company’s consolidated statement of operations in FY 2017. On June 30, 2017, in connection with the sale of the Entertainment segment, the Company made a mandatory prepayment of $140.0 million with a corresponding prepayment premium of $15.2 million of the 2016 Senior Secured Term Loan, of which the prepayment premium was allocated to discontinued operations in the Company’s consolidated statement of operations. As part of this mandatory prepayment, the Company wrote-off a pro-rata portion of the original issue discount and deferred financing costs of $9.4 million and $4.7 million, respectively, which was also allocated to discontinued operations in the Company’s consolidated statement of operations in FY 2017. Additionally, on June 30, 2017, the Company made a voluntary prepayment of $66.0 million with a corresponding prepayment premium of $7.2 million of which the prepayment premium was recorded in loss on extinguishment of debt within continuing operations on the Company’s consolidated statement of operations in FY 2017. Accordingly, the Company wrote off the remaining portion of the original issue discount and deferred financing costs of $4.4 million and $2.3 million, respectively, which was recorded in loss on extinguishment of debt in the Company’s consolidated statement of operations in FY 2017. As a result of these prepayments, the Company’s outstanding principal balance of the 2016 Senior Secured Term Loan was zero as of June 30, 2017 and the facility has since been terminated. Given the principal balance of the loan was reduced to zero as of June 30, 2017, the Company recorded no cash interest during the Current Quarter as compared to $6.3 million in the Prior Year Quarter. Senior Secured Term Loan On August 2, 2017, the Company entered into the Senior Secured Term Loan, among IBG Borrower, the Company’s wholly-owned direct subsidiary, as borrower, the Company and certain wholly-owned subsidiaries of IBG Borrower, as Guarantors, Cortland, as administrative agent and collateral agent and the lenders party thereto from time to time, including Deutsche Bank AG, New York Branch which was a privately negotiated transaction. Pursuant to the Senior Secured Term Loan, the lenders provided to IBG Borrower the Senior Secured Term Loan, scheduled to mature on August 2, 2022 in an aggregate principal amount of $300 million and bearing interest at LIBOR plus an applicable margin of 7% per annum. Pursuant to the terms of the Senior Secured Term Loan, the net proceeds of the Senior Secured Term Loan were to be used to repay the Company’s 1.50% Convertible Notes on or before their maturity (with any remaining funds going toward general corporate purposes). On the Closing Date the net cash proceeds of the Senior Secured Term Loan were deposited into an escrow account. Effective as of the Closing Date, the funds in the escrow account were subject to release to IBG Borrower from time to time, subject to the satisfaction of customary conditions precedent upon each withdrawal, to finance repurchases of, or at the maturity date thereof to repay in full, the 1.50% Convertible Notes. The Company had the ability to make these repurchases in the open market or privately negotiated transactions, depending on prevailing market conditions and other factors. Borrowings under the Senior Secured Term Loan were to amortize quarterly at 0.5% of principal, commencing on September 30, 2017. IBG Borrower was obligated to make mandatory prepayments annually from excess cash flow and periodically from net proceeds of certain asset dispositions and from net proceeds of certain indebtedness, if incurred (in each case, subject to certain exceptions and limitations provided for in the Senior Secured Term Loan). IBG Borrower’s obligations under the Senior Secured Term Loan are guaranteed jointly and severally by the Company and the other Guarantors pursuant to a separate facility guaranty. IBG Borrower’s and the Guarantors’ obligations under the Senior Secured Term Loan are secured by first priority liens on and security interests in substantially all assets of IBG Borrower, the Company and the other Guarantors and a pledge of substantially all equity interests of the Company’s subsidiaries (subject to certain limits including with respect to foreign subsidiaries) owned by the Company, IBG Borrower or any other Guarantor. However, the security interests will not cover certain intellectual property and licenses owned, directly or indirectly by the Company’s subsidiary Iconix Luxembourg Holdings SÀRL or those subject to the Company’s securitization facility. In addition, the pledges exclude certain equity interests of Marcy Media Holdings, LLC, and the subsidiaries of Iconix China Holdings Limited and any interest in the proceeds related to the Company’s previously announced sale of its equity interest in Complex Media, Inc. In connection with the Senior Secured Term Loan, IBG Borrower, the Company and the other Guarantors made customary representations and warranties and have agreed to adhere to certain customary affirmative covenants. Additionally, the Senior Secured Term Loan mandates that IBG Borrower, the Company and the other Guarantors enter into account control agreements on certain deposit accounts, maintain and allow appraisals of their intellectual property, perform under the terms of certain licenses and other agreements scheduled in the Senior Secured Term Loan and report significant changes to or terminations of licenses generating guaranteed minimum royalties of more than $0.5 million. Prior to the First Amendment (as discussed below), IBG Borrower was required to satisfy a minimum asset coverage ratio of 1.25:1.00 and maintain a leverage ratio of no greater than 4.50:1.00. Amendments to Senior Secured Term Loan First Amendment On October 27, 2017, the Company entered into the First Amendment to the Senior Secured Term Loan pursuant to which, among other things, the remaining escrow balance of approximately $231 million (after taking into account approximately $59.2 million that was used to buy back 1.50% Convertible Notes in open market purchases in the third quarter of 2017) was returned to the lenders. The First Amendment also provided for, among other things, (a) a reduction in the existing $300 million term loan, (b) a new senior secured delayed draw term loan facility in the aggregate amount of up to $165.7 million, consisting of (i) a $25 million First Delayed Draw Term Loan to be drawn on or prior to March 15, 2018, which was drawn on October 27, 2017 and (ii) a $140.7 million Second Delayed Draw Term Loan to be drawn on March 14, 2018 for the purpose of repaying the 1.50% Convertible Notes; (c) an increase of the Total Leverage Ratio permitted under the Senior Secured Term Loan from 4.50:1.00 to 5.75:1.00; (d) a reduction in the debt service coverage ratio multiplier in the Company’s asset coverage ratio under the Senior Secured Term Loan; (e) an increase in the existing amortization rate from 2 percent per annum to 10 percent per annum commencing July 2019; and (f) amendments to the mandatory prepayment provisions to (i) permit the Company not to prepay borrowings under the Senior Secured Term Loan from the first $100 million of net proceeds resulting from Permitted Capital Raising Transactions (as defined in the Senior Secured Term Loan) effected prior to March 15, 2018, and (ii) elimi

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Stockholders' Equity	10. Stockholders’ Equity 2009 Equity Incentive Plan On August 13, 2009, the Company’s stockholders approved the Company’s 2009 Equity Incentive Plan (“2009 Plan”). The 2009 Plan authorizes the granting of common stock options or other stock-based awards covering up to 3.0 million shares of the Company’s common stock. All employees, directors, consultants and advisors of the Company, including those of the Company’s subsidiaries, are eligible to be granted non-qualified stock options and other stock-based awards (as defined) under the 2009 Plan, and employees are also eligible to be granted incentive stock options (as defined) under the 2009 Plan. No new awards may be granted under the Plan after August 13, 2019. On August 15, 2012, the Company’s stockholders approved the Company’s Amended and Restated 2009 Plan (“Amended and Restated 2009 Plan”), which, among other items and matters, increased the shares available under the 2009 Plan by an additional 4.0 million shares to a total of 7.0 million shares issuable under the Amended and Restated 2009 Plan, and extended the 2009 Plan termination date through August 15, 2022. 2015 Executive Incentive Plan On December 4, 2015, the Company’s stockholders approved the Company’s 2015 Executive Incentive Plan (“2015 Plan”). Under the 2015 Plan, the Company’s officers and other key employees designated by the Compensation Committee are eligible to receive awards of cash, common stock or stock units issuable under the Amended and Restated 2009 Plan, or any other combination thereof. Awards under the 2015 Plan are based on the achievement of certain pre-determined, non-discretionary performance goals established by the Compensation Committee and are further subject, among other things, the 2015 Plan participant’s continuous employment with the Company until the applicable payment date. 2016 Omnibus Incentive Plan On November 4, 2016, the Company’s stockholders approved the Company’s 2016 Omnibus Incentive Plan (“2016 Plan”). The 2016 Plan replaced and superseded the Amended and Restated 2009 Plan. Under the 2016 Plan, all employees, directors, officers, consultants and advisors of the Company, including those of the Company’s subsidiaries, are eligible to be granted common stock, options or other stock-based awards. At inception, there were 2.4 million shares of the Company’s common stock available for issuance under the 2016 Plan. The 2016 Plan was amended at the 2017 Annual Meeting of Stockholders to increase the number of shares available under the plan by 1.9 million shares. Shares Reserved for Issuance As of March 31, 2018, there were no common shares available for issuance under the 2016 Plan or under any of the Company’s prior plans. On May 7, 2018, the Company filed a Form S-8 to register the 1.9 million shares available for issuance under the 2016 Plan that were approved at the 2017 Annual Meeting of Stockholders. Stock Options and Warrants The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options which have no vesting restrictions and are fully transferable. In addition, option valuation models require the input of highly subjective assumptions including the expected stock price volatility. Because the Company’s employee stock options have characteristics significantly different from those of traded options, and because changes in the subjective input assumptions can materially affect the fair value estimate, in management’s opinion, the existing models do not necessarily provide a reliable single measure of the fair value of its employee stock options. There was no compensation expense related to stock option grants or warrant grants during the Current Quarter or Prior Year Quarter as all prior awards have been fully expensed. Additionally, no stock options or warrants were granted during the Current Quarter or Prior Year Quarter. Summaries of the Company’s stock options, warrants and performance related options activity, and related information for the Current Quarter are as follows: Options Options Weighted Exercise Price Outstanding at January 1, 2018 20,000 $ 12.29 Granted — — Canceled — — Exercised — — Expired/Forfeited — — Outstanding at March 31, 2018 20,000 $ 12.29 Exercisable at March 31, 2018 20,000 $ 12.29 Warrants Warrants Weighted Average Exercise Price Outstanding at January 1, 2018 20,000 $ 6.64 Granted — — Canceled — — Exercised — — Expired/Forfeited — — Outstanding at March 31, 2018 20,000 $ 6.64 Exercisable at March 31, 2018 20,000 $ 6.64 The weighted average contractual term (in years) of options outstanding and exercisable and warrants outstanding and exercisable as of March 31, 2018 was 1.26 and 0.51, respectively. All warrants issued in connection with acquisitions are recorded at fair market value using the Black Scholes model and are recorded as part of purchase accounting. Certain warrants are exercised using the cashless method. Restricted stock Compensation cost for restricted stock is measured as the excess, if any, of the quoted market price of the Company’s stock at the date the common stock is issued over the amount the employee must pay to acquire the stock (which is generally zero). The compensation cost, net of projected forfeitures, is recognized over the period between the issue date and the date any restrictions lapse, with compensation cost for grants with a graded vesting schedule recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in substance, multiple awards. The restrictions do not affect voting and dividend rights. The following table summarize information about unvested restricted stock transactions: Shares Weighted Grant Date Fair Value Non-vested, January 1, 2018 1,308,084 $ 25.29 Granted — — Vested (239,559 ) 7.83 Forfeited/Canceled 19,244 6.37 Non-vested, March 31, 2018 1,087,769 $ 28.81 The Company has awarded time-based restricted shares of common stock to certain employees. The awards have restriction periods tied to employment and vest over a maximum period of approximately 3 years. The cost of the time-based restricted stock awards, which is the fair market value on the date of grant net of estimated forfeitures, is expensed ratably over the vesting period. The Company has awarded performance-based restricted shares of common stock to certain employees. The awards have restriction periods tied to certain performance measures. The cost of the performance-based restricted stock awards, which is the fair market value on the date of grant net of estimated forfeitures, is expensed when the likelihood of those shares being earned is deemed probable. Compensation expense related to restricted stock grants for the Current Quarter and Prior Year Quarter was approximately $1.0 million (including approximately $0.2 million related to retention stock discussed below and expense related to performance based awards (long-term incentive compensation discussed below) of approximately $0.3 million) and $1.7 million (including approximately $0.4 million related to retention stock discussed below and expense related to performance based awards (long-term incentive compensation discussed below) of approximately $0.1 million), respectively. An additional amount of $7.9 million of expense (including $0.9 million related to retention stock discussed below and expense related to performance based awards (long-term incentive compensation discussed below) of approximately $4.6 million) of compensation expense is expected to be expensed evenly over a period of approximately two years. For both the Current Quarter and Prior Year Quarter, the Company repurchased shares valued at less than $0.1 million and approximately $0.9 million, respectively, of its common stock in connection with net share settlement of restricted stock grants and option exercises. Retention Stock On January 7, 2016, the Company awarded to certain employees a retention stock grant of approximately 1.3 million shares in the aggregate with a then current value of approximately $7.5 million. The awards cliff vest in three years based on the Company’s total shareholder return measured against a peer group, as described in the Company’s Form 10-K/A filed on April 29, 2016. The measurement period began on the grant date and the beginning measurement amount was calculated based on the 20 day average closing stock price leading up to the grant date. The measurement period ends on December 31, 2018 and the ending measurement amount is based on the 20 day average closing stock price leading up to December 31, 2018. The award will vest on a scaled pay out based on the Company’s total shareholder return versus the peer group. In accordance with ASC 718, the Company valued these shares utilizing a Monte Carlo simulation as the awards are based on market conditions. The grant date fair value of the awards issued on January 7, 2016 was $4.25 and was based on the following range of assumptions for the Company and the peer group: January 7. 2016 Valuation Assumptions: Beginning average stock price (20 trading days prior to January 7, 2016) $4.85 - $63.41 Valuation date stock price (closing values on January 7, 2016) $4.53 - $59.08 Risk free interest rate 1.21 % Expected dividend yield used when simulating the total shareholder return 0.00 % Expected dividend yield used when simulating the Company's stock price 0.00 % Stock price volatility (based on historical stock price over the last 2.98 years) 21.09% - 72.17% Correlation coefficients 0.04 - 0.47 Mr. Haugh, the Company’s Chief Executive Officer, was issued an Employment Inducement Award pursuant to his employment agreement. The terms of the Employment Inducement Award are similar to the retention stock awards provided to all other employees as described above. The grant date fair value of Mr. Haugh’s award issued on February 23, 2016 was $5.75 and was based on the following range of assumptions for the Company and the peer group: February Valuation Assumptions: Beginning average stock price (20 trading days prior to February 23, 2016) $4.86 - $66.71 Valuation date stock price (closing values on February 23, 2016) $5.52 - $69.92 Risk free interest rate 0.90 % Expected dividend yield used when simulating the total shareholder return 0.00 % Expected dividend yield used when simulating the Company's stock price 0.00 % Stock price volatility (based on historical stock price over the last 3.00 years) 24.23% - 74.33% Correlation coefficients 0.06 - 0.50 Long-Term Incentive Compensation On March 31, 2016, the Company approved a new plan for long-term incentive compensation (the “2016 LTIP”) for key employees and granted equity awards under the 2016 LTIP in the aggregate amount of 707,028 shares at a weighted average share price of $7.31 with a then current value of approximately $5.2 million. For each grantee other than Mr. Haugh, the Company’s Chief Executive Officer, 33% of the award was in the form of restricted stock units (“RSUs”) and 67% of the award was in the form of target level performance stock units (“PSUs”). Mr. Haugh’s award under the 2016 LTIP consisted of 25% RSUs and 75% PSUs. The RSUs for each grantee vest in three equal installments annually over a three-year period. Other than for Mr. Haugh, the PSUs cliff vest over three years based on the achievement of an aggregate adjusted operating income performance target established by the Compensation Committee. One-third of Mr. Haugh’s PSUs shall be converted to time-based awards on December 31, 2016, December 31, 2017 and December 31, 2018, based on the achievement of aggregate adjusted operating income performance targets established by the Compensation Committee, and such time-based awards shall vest and be settled on December 31, 2018. For both the Current Quarter and Prior Year Quarter, less than 0.1 million shares were forfeited in respect of the 2016 LTIP. The weighted average remaining contractual term (in years) of the PSUs is one year. On March 7, 2017, the Company approved a new plan for long-term incentive compensation (the “2017 LTIP”) for certain employees and granted equity awards under the 2017 LTIP in the aggregate amount of 871,011 shares at a weighted average share price of $7.52 with a then current value of $6.6 million. For each grantee, 33% of the award was in the form of RSUs and 67% of the award was in the form of target level PSUs. The material terms of the PSUs and RSUs are substantially similar to those set forth in the 2016 LTIP. Specifically, the RSUs vest one third annually on each of March 30, 2018, March 30, 2019 and March 30, 2020. The PSUs vest based on performance metrics approved by the Compensation Committee, which, for the performance period commencing January 1, 2017 and ending on December 31, 2019, are based on the Company’s achievement of an aggregate adjusted operating income performance target as set forth in the applicable award agreements, and continued employment through December 31, 2019. For the Current Quarter, less than 0.1 million shares as compared to none for the Prior Year Quarter were forfeited in respect of the 2017 LTIP. The weighted average remaining contractual term (in years) of the PSUs is two years. On March 15, 2018, the Company approved a new plan for long-term incentive compensation (the “2018 LTIP”) for certain employees which consisted of (i) equity awards in the aggregate amount of 2,241,828 shares at a weighted average share price of $1.38 with a then current value of $3.1 million and (ii) cash awards in the aggregate amount of approximately $3.1 million. For each grantee, 50% of the award was in the form of PSUs and 50% of such award was in the form of cash (the “Cash Grant”). The Cash Grants comprising the 2018 LTIP vest in 48 equal semi-monthly installments on the 15 th

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	11. Earnings Per Share Basic earnings per share includes no dilution and is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflects, in periods in which they have a dilutive effect, the effect of restricted stock-based awards, common shares issuable upon exercise of stock options and warrants and shares underlying convertible notes potentially issuable upon conversion. The difference between basic and diluted weighted-average common shares results from the assumption that all dilutive stock options outstanding were exercised and all convertible notes have been converted into common stock. For the Current Quarter, of the total potentially dilutive shares related to restricted stock-based awards, stock options and warrants, all or approximately 0.6 million shares were anti-dilutive, as compared to less than 0.1 million shares that were anti-dilutive for the Prior Year Quarter. For the Current Quarter, all of the shares (approximately 0.8 million) of the performance related restricted stock-based awards issued to the Company’s named executive officers were anti-dilutive as compared to less than 0.1 million of the performance related restricted stock-based awards issued to the Company’s named executive officers were anti-dilutive in the Prior Year Quarter. For the Prior Year Quarter, warrants issued in connection with the Company’s 1.50% Convertible Notes financing were anti-dilutive and therefore were not included in this calculation. Note there were no warrants associated with the Company’s 1.50% Convertible Notes for the Current Quarter as the outstanding principal balance was repaid on March 15, 2018 (the maturity date). A reconciliation of weighted average shares used in calculating basic and diluted earnings per share follows: For March 31, (in thousands) 2018 2017 Basic 59,117 56,964 Effect of exercise of stock options — — Effect of assumed vesting of restricted stock — — Diluted 59,117 56,964 In accordance with ASC 480, the Company considers its redeemable non-controlling interest in its computation of earnings per share. For the Current Quarter and Prior Year Quarter, adjustments to the Company’s redeemable non-controlling interest had an impact on the Company’s earnings per share calculation as follows: Three Months Ended March 31, 2018 2017 Net income from continuing operations attributable to Iconix Brand Group, Inc. $ 32,715 $ 4,402 Accretion of redeemable non-controlling interest (2,483 ) (1,026 ) Net income attributable to Iconix Brand Group, Inc. after accretion of redeemable non-controlling interest 30,232 3,376 Net loss from discontinued operations attributable to Iconix Brand Group, Inc. — (8,682 ) Net income (loss) attributable to Iconix Brand Group, Inc. $ 30,232 $ (5,306 ) Earnings (loss) per share - basic: Continuing operations $ 0.51 $ 0.06 Discontinued operations $ — $ (0.15 ) Earnings (loss) per share - basic $ 0.51 $ (0.09 ) Earnings (loss) per share - diluted: Continuing operations $ 0.51 $ 0.06 Discontinued operations $ — $ (0.15 ) Earnings (loss) per share - diluted $ 0.51 $ (0.09 ) Weighted average number of common shares outstanding: Basic 59,117 56,964 Diluted 59,117 56,964

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Contingencies	12. Contingencies In July 2013, Signature Apparel Group LLC, referred to as Signature, filed an amended complaint in an adversary proceeding captioned Signature Apparel Group LLC v. ROC Fashions, LLC, et al. On May 1, 2017, 3TAC, LLC, referred to as 3TAC, a former licensee of the Company, and West Loop South, LLC, referred to as West Loop (3TAC and West Loop collectively referred to as Plaintiffs), sued the Company, its affiliate, IP Holdings Unltd., LLC, referred to as IPHU, and the Company’s former CEO, Neil Cole (the Company, IPHU, and Cole are collectively referred to as the Iconix Parties), in the action captioned 3TAC, LLC and West Loop South, LLC v. Iconix Brand Group, Inc., and Neil Cole On November 1, 2017, Seth Gerszberg and EGRHC, LLC, collectively referred to as Plaintiffs, a successor in interest to Suchman, LLC, referred to as Suchman, a company wholly-owned by Gerszberg that entered into a joint venture with the Company pursuant to which they formed IP Holdings Unltd., LLC, referred to as IPHU, filed an action captioned Gerszberg and EGRHC, LLC v. Iconix Brand Group, Inc., IP Holdings Unltd, LLC and Neil Cole In New Rise Brands Holdings, LLC and Sichuan New Rise Import & Export Co. Ltd v. IP Holdings, LLC, et al., Index No. 65227 8 / 2016 n New Rise and Sichuan , New Rise and Sichuan . Two shareholder derivative complaints captioned James v. Cuneo et al, Docket No. 1:16-cv-02212 Ruthazer v. Cuneo et al, Docket No. 1:16-cv-04208 De Filippis v. Cuneo et al. Index No. 650711/2016 Gold v. Cole et al, Index No. 53724/2016 Rosenfeld v. Cuneo et al., Index No. 510427/2016 As previously announced, the Company has received a formal order of investigation from the SEC. The Company intends to continue to cooperate fully with the SEC. Three securities class actions have been consolidated in the United States District Court for the Southern District of New York, under the caption In re Iconix Brand Group, Inc., et al., Docket No. 1:15-cv-4860 From time to time, the Company is also made a party to litigation incurred in the normal course of business. In addition, in connection with litigation commenced against licensees for non-payment of royalties, certain licensees have asserted unsubstantiated counterclaims against the Company. While any litigation has an element of uncertainty, the Company believes that the final outcome of any of these routine matters will not, individually or in the aggregate, have a material effect on the Company’s financial position or future liquidity.

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions	13. Related Party Transactions For the Prior Year Quarter, the Company paid less than $0.1 million to Galore Media, Inc. in relation to certain marketing services to promote the Company’s brands and for the rights to certain warrants of Galore Media, Inc. as compared to none during the Current Quarter. The Company owned a minority interest in Galore Media, Inc. The Company sold its interest in Galore Media during FY 2017. Management believes that all transactions were made on terms and conditions no less favorable than those available in the marketplace from unrelated parties. The Company has entered into certain license agreements in which the core licensee is also one of our joint venture partners. For the Current Quarter and Prior Year Quarter, the Company recognized the following royalty revenue amounts: Three Months Ended March 31, 2018 2017 Joint Venture Partner Global Brands Group Asia Limited (1) $ 5,629 $ 3,238 Buffalo International ULC (2) — 690 Rise Partners, LLC / Top On International Group Limited 242 335 M.G.S. Sports Trading Limited 153 92 Pac Brands USA, Inc. 100 33 Albion Equity Partners LLC / GL Damek 585 466 Anthony L&S 17 — MHMC 732 450 $ 7,458 $ 5,304 (1) Royalty revenue of less than $0.1 million for the Prior Year Quarter as compared to none during the Current Quarter was included in the amounts presented in the table above, related to royalty revenue associated with Peanuts Worldwide which has been reclassified in to income from discontinued operations on the Company’s condensed consolidated statement of operations. Additionally, Global Brands Group Asia Limited also served as agent to Peanuts Worldwide in respect of the Greater China Territory for Peanuts brands. As of June 30, 2017, due to the completion of the sale of the Entertainment segment, Global Brands Group Asia Limited is no longer a related party in its capacity as agent of Peanuts Worldwide. For the Prior Year Quarter, Global Brands Group Asia Limited earned fees of approximately $0.8 million in its capacity as agent to Peanuts Worldwide, which have been recorded within discontinued operations in the Company’s condensed consolidated statement of operations. (2) Prior to FY 2017, Buffalo International ULC maintained the Buffalo license agreement. However, starting in February 2017, Buffalo International ULC effectively assigned the Buffalo license agreement to GBG. The license revenue from the Buffalo license agreement represents approximately $5.2 million and $2.5 million of the total license revenue for GBG shown in the table above for the Current Quarter and Prior Year Quarter, respectively.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes The Company computes its expected annual effective income tax rate in accordance with ASC 740 and makes changes on a quarterly basis as necessary based on certain factors such as changes in forecasted annual pre-tax income; changes to actual or forecasted permanent book to tax differences; impacts from tax audits with state, federal or foreign tax authorities; impacts from tax law changes; or change in judgment as to the realizability of deferred tax assets. The Company identifies items which are unusual and non-recurring in nature and treats these as discrete events. The tax effect of discrete items is recorded in the quarter in which the discrete events occur. Due to the volatility of these factors, the Company's consolidated effective income tax rate can change significantly on a quarterly basis. With the exception of the Buffalo brand joint venture, Iconix Middle East joint venture, Diamond Icon joint venture and Umbro China joint venture, the Company is not responsible for the income taxes related to the non-controlling interest’s share of the joint venture’s earnings. Therefore, the tax liability associated with the non-controlling interest share of the joint venture’s earnings is not reported in the Company’s income tax expense, despite the joint venture’s entire income being consolidated in the Company’s reported income before income tax expense. As such, the joint venture’s earnings have the effect of lowering our effective tax rate. This effect is more pronounced in periods in which joint venture earnings are higher relative to our other earnings. Since the Buffalo brand joint venture is a taxable entity in Canada, the Iconix Middle East joint venture and Diamond Icon joint venture are taxable entities in the United Kingdom and the Umbro China joint venture is a taxable entity in Hong Kong, the Company is required to report its tax liability, including taxes attributable to the non-controlling interest, in its income statement. All other consolidated joint ventures are partnerships and treated as pass-through entities not subject to taxation in their local tax jurisdiction, and therefore the Company includes only the tax attributable to its proportionate share of income from the joint venture in income tax expense. The Company conducts business globally and, as a result, the Company or one or more of its subsidiaries files income tax returns in the U.S., various state and local, and foreign jurisdictions. The Company, joined by its domestic subsidiaries, files a consolidated income tax return for Federal income tax purposes. In the normal course of business, the Company is subject to examination in such domestic and foreign jurisdictions. During the fourth quarter of 2016, the Internal Revenue Service initiated an audit of the 2014 federal income tax return which is still ongoing. For state tax purposes, our 2011 and forward tax years remain open for examination by New York State. The Company recognized no interest expense related to uncertain tax positions in the Current Quarter as compared to less than $0.1 million during the Prior Year Quarter In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some or all the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent on the generation of future taxable income in the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income, and tax planning strategies in making this assessment. Based on these items and the three consecutive years of pretax losses (resulting from impairment), management has determined that enough uncertainty exists relative to the realization of the deferred income tax asset balances to warrant the application of a full valuation allowance for all taxing jurisdictions starting as of September 30, 2017, other than for Canadian operations and certain assets for the US that management believe will be available to reduce current federal taxes on the balance sheet at March 31, 2018. In addition, the Company continues to have deferred tax liabilities related to indefinite lived intangibles on the condensed consolidated balance sheet which cannot be considered to be a source of taxable income to offset deferred tax assets. On December 22, 2017, the U.S. enacted the Tax Cuts and Jobs Act. The new law, which is also commonly referred to as “U.S. tax reform”, significantly changes U.S. corporate income tax laws. The primary impact on the Company was associated with the effect of reducing the U.S. corporate income tax rate from 35% to 21% starting in 2018. As a result, the Company has estimated a net benefit of $67 million recorded during the fourth quarter of 2017. Other provisions of the law took effect January 1, 2018, including, but not limited to, creating a territorial tax system, eliminating or limiting the deduction of certain expenses including interest expense, and requiring a tax of earnings generated by foreign subsidiaries that are in excess of a specified return. As of March 31, 2018, the Company continues to evaluate its accounting for the tax effects of the enactment of the law. However, the Company has made a reasonable estimate and recorded in the fourth quarter of 2017 (i) a net income tax provision of $34 million resulting from the remeasurement of the Company’s net deferred income tax assets and liabilities and uncertain tax liabilities based on the new reduced U.S. corporate income tax rate, and (ii) an income tax benefit of $101 million from the remeasurement of the Company’s valuation allowance for the impact of the law on certain tax attributes. In other cases, the Company has not been able to make a reasonable estimate and continues to account for those items based on its existing accounting under GAAP and the provisions of the tax laws that were in effect prior to enactment. One such case is the Company’s intent regarding whether to continue to assert indefinite reinvestment on a part or all the foreign undistributed earnings. Once the Company finalizes its analysis, it will be able to conclude on further adjustments, if any, to be recorded to these provisional amounts. Any such change will be reported as a component of income taxes in the period in which such adjustments are determined but in no case later than the fourth quarter of 2018. The Company’s consolidated effective tax rate from continuing operations for the Current Quarter was 4.4% which resulted in a $1.7 million income tax provision as compared to the consolidated effective tax rate from continuing operations for the Prior Year Quarter of 46.1% which resulted in a $5.9 million income tax provision. The decrease in the effective tax rate for the Current Quarter’s effective tax rate as compared to the Prior Year Quarter is primarily a result of the release of a portion of the valuation allowance on the deferred tax assets as well as the impact of the income related to the mark to market adjustment occurring in the Current Quarter of which a large portion was a permanent difference and therefore no tax was provided. This benefit had the effect of reducing the tax expense on the pretax income which lowers the effective tax rate. The Company is currently indefinitely reinvested in all earnings in its foreign subsidiaries. The Company currently has zero undistributed earnings and profits in its foreign subsidiary. Management believes that an adequate provision has been made for any adjustments that may result from tax examinations; however, the outcome of tax audits cannot be predicted with certainty. If any issues addressed in the Company's tax audits are resolved in a manner not consistent with management's expectations, the Company could be required to adjust its provision for income tax in the period such resolution occurs.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	15. Accumulated Other Comprehensive Income The following table sets forth the activity in accumulated other comprehensive income for the Current Quarter and Prior Year Quarter: Foreign currency translation adjustments Unrealized losses of available for sale securities Total Balance at December 31, 2017 $ (48,103 ) $ (3,177 ) $ (51,280 ) Changes before reclassifications 2,761 — 2,761 Cumulative adjustment for adoption of ASU 2016-01 — 3,177 3,177 Current period other comprehensive income 2,761 3,177 5,938 Balance at March 31, 2018 $ (45,342 ) $ — $ (45,342 ) Foreign currency translation adjustments Unrealized losses of available for sale securities Total Balance at December 31, 2016 $ (67,735 ) $ (2,693 ) $ (70,428 ) Changes before reclassifications 2,630 (571 ) 2,059 Current period other comprehensive income 2,630 (571 ) 2,059 Balance at March 31, 2017 $ (65,105 ) $ (3,264 ) $ (68,369 )

Segment and Geographic Data

Segment and Geographic Data	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment and Geographic Data	16. Segment and Geographic Data The Company identifies its operating segments for which separate financial information is available and for which segment results are evaluated regularly by the Chief Executive Officer, the Company’s chief operating decision maker, in deciding how to allocate resources and in assessing performance. The Company has disclosed the following operating segments: men’s, women’s, home, and international. Since the Company does not track, manage and analyze its assets by segments, no disclosure of segmented assets is reported. Additionally, the Company previously owned and operated an Entertainment segment which is included in the Company’s condensed consolidated statement of operations as a discontinued operation for the Prior Year Quarter. See Note 2 in Notes to Consolidated Financial Statements for further details. The geographic regions consist of the United States and Other (which principally represent Latin America and Europe). Revenues attributable to each region are based on the location in which licensees are located and where they principally do business. Reportable data for the Company’s operating segments is as follows: Three Months Ended March 31, 2018 2017 Licensing revenue: Women's $ 16,598 $ 28,143 Men's 9,945 10,193 Home 6,512 7,336 International 15,493 13,050 $ 48,548 $ 58,722 Operating income (loss): Women's $ 14,628 $ 26,281 Men's 5,874 5,944 Home 5,743 6,625 International 6,486 5,520 Corporate (12,238 ) (10,760 ) $ 20,493 $ 33,610

Other Assets- Current and Long-

Other Assets- Current and Long-Term	3 Months Ended
	Mar. 31, 2018
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Other Assets- Current and Long -Term	17. Other Assets- Current and Long-Term Other Assets - Current March 31, 2018 December 31, 2017 Other assets- current consisted of the following: Notes receivables on sale of trademarks (1) $ 4,114 $ 3,097 Note receivable in connection with acquisition of interest in Buffalo brand — 2,515 Due from DHX Media, Ltd. (2) 739 1,175 Contract asset - current 6,370 — Prepaid advertising 2,356 2,453 Prepaid expenses 4,239 4,621 US federal tax receivables 29,662 29,662 Prepaid taxes 4,140 2,347 Prepaid insurance 1,153 1,428 Due from related parties 3,899 3,843 Other current assets 492 709 Other current assets $ 57,164 $ 51,850 (1) Certain amounts due from our joint venture partners are presented net of redeemable non-controlling interest and non-controlling interest in the condensed consolidated balance sheet. Refer to Note 5 for further details. (2) This amount represents the remaining amount due from DHX as a result of amounts reimbursable to the Company of $0.7 million associated with the transitional service agreement between DHX and the Company and other expenses which were incurred by the Company subsequent to the completion of the sale of the Entertainment segment on June 30, 2017. Refer to Note 2 for further details. Other Assets – Long Term March 31, December 31, 2018 2017 Other noncurrent assets consisted of the following: Contract asset - long term $ 11,667 $ — Prepaid Interest 5,596 5,601 Deposits 616 616 Other noncurrent assets 46 51 Other noncurrent assets $ 17,925 $ 6,268

Other Liabilities - Current

Other Liabilities - Current	3 Months Ended
	Mar. 31, 2018
Other Liabilities Disclosure [Abstract]
Other Liabilities - Current	18. Other Liabilities – Current As of March 31, 2018 and December 31, 2017, other current liabilities of $10.2 million and $13.6 million, respectively, related to $10.2 million and $9.2 million, respectively, due to certain joint ventures that are not consolidated with the Company and $0 million and $4.4 million, respectively, owed to Buffalo International for distributions associated with the Buffalo joint venture.

Foreign Currency Translation

Foreign Currency Translation	3 Months Ended
	Mar. 31, 2018
Foreign Currency [Abstract]
Foreign Currency Translation	19. Foreign Currency Translation The functional currency of Iconix Luxembourg and Red Diamond Holdings, which are wholly owned subsidiaries of the Company located in Luxembourg, is the Euro. However, the companies have certain dollar denominated assets, in particular cash and notes receivable, that are maintained in U.S. Dollars, which are required to be revalued each quarter. Due to fluctuations in currency in the Current Quarter and the Prior Year Quarter, the Company recorded a $0.6 million currency translation gain and a $0.4 million currency translation loss, respectively, that is included in the condensed consolidated statement of operations. Comprehensive income includes certain gains and losses that, under U.S. GAAP, are excluded from net income as such amounts are recorded directly as an adjustment to stockholders’ equity. The Company’s comprehensive income is primarily comprised of net income and foreign currency translation gain or loss. During the Current Quarter and the Prior Year Quarter, the Company recognized as a component of its comprehensive income, a foreign currency translation gain of $2.8 million and foreign currency translation gain of $2.6 million, respectively, due to changes in foreign exchange rates during the Current Quarter and the Prior Year Quarter, respectively.

Accounting Pronouncements

Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
Accounting Changes And Error Corrections [Abstract]
Accounting Pronouncements	20. Accounting Pronouncements Recent Accounting Pronouncements In May 2014, FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606),” which is the new comprehensive revenue recognition standard that will supersede all existing revenue recognition guidance under U.S. GAAP. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which such company expects to be entitled in exchange for those goods or services. The Company adopted the new standard in the Current Quarter. Refer to Note 3 for further details. In January 2016, FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities”, includes amendments on recognition, measurement, presentation, and disclosure of financial instruments. It requires an entity to (1) measure equity investments at fair value through net income, with certain exceptions; (2) present in OCI the changes in instrument-specific credit risk for financial liabilities measured using the fair value option; (3) present financial assets and financial liabilities by measurement category and form of financial asset; (4) calculate the fair value of financial instruments for disclosure purposes based on an exit price; and (5) assess a valuation allowance on deferred tax assets related to unrealized losses on available-for-sale debt securities in connection with other deferred tax assets. The ASU provides an election to subsequently measure certain nonmarketable equity investments at cost less any impairment and adjusted for certain observable price changes. The ASU also requires a qualitative impairment assessment of such equity investments and amends certain fair value disclosure requirements. The ASU is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Certain provisions of the ASU are eligible for early adoption. The Company adopted the new standard in the Current Quarter which resulted in the Company reclassing the cumulative loss in fair value of our available-for-sale securities of $3.2 million from accumulated other comprehensive loss to accumulated losses as of January 1, 2018 in the Company’s condensed consolidated balance sheet. Change in the fair value of the available-for-sale securities will be recorded within the Company’s condensed consolidated statement of operations in future periods. Additionally, the Company’s previously cost method investments are now being categorized as other equity investments and continue to be recorded on the Company’s condensed consolidated balance sheet at cost and assessed for potential impairment on a quarterly basis. Refer to Note 5 and Note 6 for further details. In February 2016, the FASB issued ASU No. 2016-02, Leases. The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. The Company’s leases are considered operating leases and are not capitalized under ASC 840. Under ASC 842, the majority of these leases will qualify for capitalization and will result in the recognition of lease assets and lease liabilities once the new standard is adopted. The Company is in the process of reviewing lease contracts to determine the impact of adopting ASC 2016-02. In August 2016, the FASB issued ASU No. 2016-15, “Classification of Certain Cash Receipts and Cash Payments”, which clarifies how certain cash receipts and cash payments are presented in the statement of cash flows. The amendment addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice. The Company adopted the new standard in the Current Quarter which did not have a material impact to our financial statements. In October 2016, the FASB issued ASU No. 2016-16, “Income Taxes (Topic 740) – Intra-Entity Transfers of Assets Other Than Inventory”, which was issued as part of the FASB’s simplification initiative and, intends to improve the accounting for the income tax consequences of intra-entity transfers of assets other than inventory. Under this ASU, an entity should recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The Company adopted the new standard in the Current Quarter which did not have a material impact to our financial statements. In November 2016, the FASB issued ASU 2016-18, “Statement of Cash Flows: Restricted Cash.” The primary purpose of this ASU is to reduce the diversity in practice that exists in the classification and presentation of changes in restricted cash on the statement of cash flows. This ASU will require that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted the new standard in the Current Quarter. In January 2017, the FASB issued ASU No. 2017-01,”Business Combinations (Topic 805) - Clarifying the Definition of a Business”, to clarify the definition of a business, which is fundamental in the determination of whether transactions should be accounted for as acquisition (or disposals) of assets or businesses. The guidance is generally expected to result in fewer transactions qualifying as business combinations. The Company adopted the new standard in the Current Quarter which did not have a material impact to our financial statements. In February 2017, the FASB issued ASU 2017-04, “Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment”, which simplifies the subsequent measurement of goodwill by eliminating Step 2 from the goodwill impairment test and eliminated the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment. The ASU is effective for public business entities for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. This ASU should be applied prospectively. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. We will adopt this accounting guidance in future periods. In May 2017, the FASB issued ASU 2017-09, “Compensation – Stock Compensation (Topic 718)”, which provides clarity and reduces both (1) diversity in practice and (2) cost and complexity when applying the guidance in Topic 718, Compensation – Stock Compensation, to a change to the terms or conditions of a share-based payment award. The ASU is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. The Company adopted the new standard in the Current Quarter which did not have a material impact to our financial statements.

Other Matters

Other Matters	3 Months Ended
	Mar. 31, 2018
Other Matters Disclosure [Abstract]
Other Matters	21. Other Matters During the Current Quarter and the Prior Year Quarter, the Company included in its selling, general and administrative expenses approximately $2.7 million and $2.2 million, respectively, of charges related to professional fees associated with the continuing correspondence with the Staff of the SEC, the SEC investigation and the class action and derivative litigations.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	22. Subsequent Events At the Special Meeting of Stockholders of the Company held on April 26, 2018, the Company’s stockholders entitled to vote at the meeting voted to approve the amendment to the Company’s Certificate of Incorporation to increase the number of authorized shares of its common stock, $.001 par value per share, from 150 million to 260 million. On May 7, 2018, the Company filed a Form S-8 to register the 1.9 million shares that were approved at the 2017 Annual Meeting of Stockholders. In April 2018, the Company converted a total outstanding principal balance of $2.8 million of its 5.75% Convertible Notes in to 2.3 million shares of the Company’s common stock. In April 2018, pursuant to a letter agreement entered into simultaneously with the Company’s acquisition of a 51% equity interest in Hydraulic, the Company acquired the remaining 49% ownership interest from its joint venture partner for no consideration effectively increasing the Company’s ownership interest in Hydraulic to 100% until such time as an affiliate of such joint venture partner satisfies its outstanding payment obligations to the Company under a terminated license agreement (through distributions on such 49% interest or otherwise).

Discontinued Operations (Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2018
Discontinued Operations And Disposal Groups [Abstract]
Summary of Discontinued Operations, Income Statement and Cash Flow	The following table presents the details of the Entertainment segment for the Prior Year Quarter which were shown as income from discontinued operations, net of income taxes, in our unaudited condensed consolidated statement of operations: Three Months Ended March 31, 2018 2017 (unaudited) Licensing revenue $ — $ 27,461 Selling, general and administrative expenses — 17,850 Depreciation and amortization — 185 Operating income — 9,426 Other expenses (income): Interest expense — 6,122 Interest income — (99 ) Loss on extinguishment of debt — 15,737 Foreign currency translation loss — 143 Other expenses – net — 21,903 Loss from operations of discontinued operations before income taxes — (12,477 ) Benefit for income taxes — (5,098 ) Net loss from discontinued operations — (7,379 ) Less: Net income attributable to non- controlling interest from discontinued operations — 1,303 Loss from discontinued operations, net of income taxes $ — $ (8,682 ) The cash proceeds from the sale of the Company’s Entertainment segment were utilized by the Company to make mandatory principal prepayments on both its Senior Secured Notes and 2016 Senior Secured Term Loan (as well as a corresponding prepayment premium). As a result, and in accordance with ASC 205-20-45-6, for the Prior Year Quarter, the Company allocated interest expense of $6.1 million (which includes $0.6 million of amortization of the original issue discount on the 2016 Senior Secured Term Loan) from continuing operations to discontinued operations. Additionally, for the Prior Year Quarter, the Company allocated the prepayment premium of $15.7 million related to the 2016 Senior Secured Term Loan from continuing operations to discontinued operations on the Company’s unaudited condensed consolidated statement of operations. Refer to Note 9 for further details. The following table presents cash flow of the Entertainment segment during the Prior Year Quarter: Three Months Ended March 31, 2018 2017 Net cash used in discontinued operating activities $ — $ (1,352 ) Net cash used in discontinued investing activities $ — $ (31 ) Net cash used in discontinued financing activities $ — $ —

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2018
Topic 606
Summary of Revenues Disaggregated by License Type, Revenue Source and Geography	The following table presents our revenues disaggregated by license type: Three Months Ended March 31, 2018 2017 Licensing revenue by license type: Direct-to-retail license $ 21,213 $ 34,538 Wholesale licenses 25,138 24,155 Other licenses ( 1) 2,197 29 $ 48,548 $ 58,722 (1) Included in Other licenses for the Current Quarter is $2.1 million of revenue associated with the Umbro business purchases discussed above of which there was no comparable amount in Prior Year Quarter. The following table represents our revenues disaggregated by geography: Three Months Ended March 31, 2018 2017 Total licensing revenue by geographic region: United States $ 32,877 $ 44,618 Other (1) 15,671 14,104 $ 48,548 $ 58,722 (1) No single country represented 10% of the Company’s revenues in the periods presented.

Goodwill and Trademarks and O33

Goodwill and Trademarks and Other Intangibles, net (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Trademarks and Other Intangibles, net	Trademarks and other intangibles, net, consist of the following: March 31, 2018 December 31, 2017 Estimated Lives in Years Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Indefinite-lived trademarks Indefinite $ 468,435 $ — $ 465,391 $ — Definite-lived trademarks 10-15 8,958 8,927 8,958 8,917 Non-compete agreements 2-15 — — 940 940 Licensing contracts 1-9 1,034 825 3,412 3,122 $ 478,427 $ 9,752 $ 478,701 $ 12,979 Trademarks and other intangibles, net $ 468,675 $ 465,722

Joint Ventures and Investments

Joint Ventures and Investments (Tables)	3 Months Ended
	Mar. 31, 2018
Investments In And Advances To Affiliates Schedule Of Investments [Abstract]
Consolidated Joint Ventures	As of March 31, 2018, the following joint ventures are consolidated with the Company: Entity Name Date of Original Formation Iconix's Ownership % as of March 31, 2018 Joint Venture Partner Put / Call Options, as applicable (2) Danskin China Limited October 2016 100% Li-Ning (China) Sports Goods Co. Ltd. — Umbro China Limited July 2016 95% Hong Kong MH Umbro International Co. Ltd. Call Options US Pony Holdings, LLC February 2015 75% Anthony L&S Athletics, LLC — Iconix MENA Ltd. (1) December 2014 55% Global Brands Group Asia Limited Put / Call Options Iconix Israel, LLC (1) November 2013 50% MGS — Iconix Europe LLC (1) December 2009 51% Global Brands Group Asia Limited Put / Call Options Hydraulic IP Holdings LLC (1) December 2014 51% (3) Top On International — Diamond Icon (1) March 2013 51% Albion Agencies Ltd. Buffalo brand joint venture (1) February 2013 51% Buffalo International — Icon Modern Amusement, LLC (1) December 2012 51% Dirty Bird Productions — Hardy Way, LLC May 2009 85% Donald Edward Hardy — (1) The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity. (2) (3)
Amounts Due from Such Joint Venture Partners Remain Recorded on Consolidated Balance Sheet	As of March 31, 2018, the following amounts due from such joint venture partners remain recorded on the Company’s consolidated balance sheet: Entity Joint Venture Partner Amount Recorded in Iconix India joint venture Reliance Brands Ltd. $ 1,000 Other Assets - Current
Equity Method Investments	Investments Equity Method Investments Entity Name Date of Original Formation / Investment Partner Put / Call Options, as applicable (3) Iconix Australia, LLC (1) September 2013 Pac Brands USA, Inc. Put / Call Options Iconix India joint venture (1) June 2012 Reliance Brands Ltd. — Iconix SE Asia, Ltd. (1) October 2013 Global Brands Group Asia Limited Put / Call Options MG Icon (1) March 2010 Purim LLC — Galore Media, Inc. (1)(2) April 2016 Various minority interest holders — (1) The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, that the joint venture is not a VIE and not subject to consolidation. The Company has recorded its investment under the equity method of accounting since inception. (2) In September 2017, the Company entered into a stock repurchase agreement with Galore Media, Inc. (“Galore”) whereby the Company sold, and Galore agreed to repurchase, the Company’s 50,050 outstanding shares of Series A Preferred Stock of Galore for $0.5 million. Pursuant to the stock repurchase agreement, the Company received $0.3 million upon execution of the agreement and the remaining $0.2 million was received in December 2017. Additionally, pursuant to the stock repurchase agreement, the Company forfeited and surrendered the 46,067 shares of Series A Preferred Stock of Galore that were received in April 2016 upon the Company’s exercise of the initial warrant. All remaining warrants to purchase additional shares of Series A Preferred Stock of Galore were also forfeited as part of the stock repurchase arrangement. This transaction resulted in the Company’s ownership interest in Galore being reduced to zero. (3) Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for material terms of the put and call options associated with the Company’s joint venture. Additionally, through its ownership of Iconix China Holdings Limited, the Company has equity interests in the following private companies which are accounted for as equity method investments: Brands Placed Partner Ownership by Iconix China Value of Investment As of March 31, 2018 Candie’s Candies Shanghai Fashion Co. Ltd. 20% $ 10,343 Marc Ecko Shanghai MuXiang Apparel & Accessory Co. Limited 15% 2,270 Material Girl Ningo Material Girl Fashion Co. Ltd. 20% 2,129 Ecko Unltd Ai Xi Enterprise (Shanghai) Co. Limited 20% 10,568 $ 25,310 Other Equity Investments Entity Name Date of Original Formation / Investment China Outfitters Holdings Ltd. (3) September 2008 Marcy Media Holdings, LLC (1) July 2013 Complex Media (1)(2) September 2013 iBrands International, LLC (1) April 2014 (1) Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. (2) (3)

Gains on Sale of Trademarks, 35

Gains on Sale of Trademarks, Net (Tables)	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Schedule of Gains on Sale of Trademarks, Net	The following table details transactions comprising gains on sale of trademarks, net in the condensed consolidated statement of operations: Three Months Ended March 31, 2018 2017 Interest in Sharper Image trademark in Iconix Southeast Asia (1) $ 236 $ — Interest in Sharper Image trademark in Iconix Europe (1) 352 — Interest in Sharper Image trademark in Iconix MENA (1) 250 — Interest in Badgley Mischka trademark in Iconix Southeast Asia (2) 478 — Interest in Badgley Mischka trademark in Iconix Europe (2) (244 ) — Interest in Badgley Mischka trademark in Iconix MENA (2) 71 — Net gains on sale of trademarks $ 1,143 $ — (1) In December 2016, the Company sold its rights to the Sharper Image intellectual property and related assets to 360 Holdings, Inc. The Sharper Image intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined gain of approximately $0.8 million upon final execution of the agreement for the sale of the Sharper Image intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures. (2) In February 2016, the Company sold its rights to the Badgley Mischka intellectual property and related assets to Titan Industries, Inc. in partnership with the founders, Mark Badgley and James Mischka, and the apparel license MJCLK LLC. The Badgley Mischka intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined net gain of approximately $0.3 million upon final execution of the agreement for the sale of the Badgley Mischka intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Estimated Fair Values of Other Financial Instruments	The estimated fair values of other financial instruments subject to fair value disclosures, determined based on Level One inputs including broker quotes or quoted market prices or rates for the same or similar instruments and the related carrying amounts are as follows: March 31, 2018 December 31, 2017 Carrying Fair Value Carrying Fair Value Long-term debt, including current portion (1) $ 758,351 $ 769,136 $ 800,842 $ 747,818 (1) Carrying amounts include aggregate unamortized debt discount and debt issuance costs.

Debt Arrangements (Tables)

Debt Arrangements (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Schedule of Debt Obligations	The Company’s debt obligations consist of the following: March 31, 2018 December 31, 2017 Senior Secured Notes $ 397,500 $ 408,174 1.50% Convertible Notes — 233,898 Variable Funding Note, net of original issue discount 92,294 91,363 Senior Secured Term Loan, net of original issue discount 170,473 74,813 5.75% Convertible Notes (1) 109,455 — Unamortized debt issuance costs (11,371 ) (7,406 ) Total debt 758,351 800,842 Less current maturities 46,549 44,349 Total long-term debt $ 711,802 $ 756,493 (1) On February 12, 2018, the Company entered into the Exchange Agreements and consummated the Note Exchange on February 22, 2018, pursuant to which the Company exchanged approximately $125.0 million aggregate principal amount of its 1.50% Convertible Notes for 5.75% Convertible Notes issued by the Company in an aggregate principal amount of approximately $125.0 million. See below for further details.
Company's Debt Maturities on Calendar Year Basis	As of March 31, 2018, the Company’s debt maturities on a calendar year basis are as follows: Total April 1 through December 2018 2019 2020 2021 2022 Thereafter Senior Secured Notes $ 397,500 $ 32,020 $ 42,693 $ 42,693 $ 42,693 $ 42,693 $ 194,708 Variable Funding Notes (1) $ 92,294 — — 92,294 — — — 2017 Senior Secured Term Loan (2) $ 170,473 2,893 11,570 19,284 19,284 117,442 — 5.75% Convertible Notes (3) $ 109,455 — — — — — 109,455 Total $ 769,722 $ 34,913 $ 54,263 $ 154,271 $ 61,977 $ 160,135 $ 304,163 (1) (2) (3) Reflects the debt carrying amount which is accounted for under the Fair Value Option in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the 5.75% Convertible Notes is $116.2 million as of March 31, 2018.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Summary of Stock Options Activity and Related Information	Summaries of the Company’s stock options, warrants and performance related options activity, and related information for the Current Quarter are as follows: Options Options Weighted Exercise Price Outstanding at January 1, 2018 20,000 $ 12.29 Granted — — Canceled — — Exercised — — Expired/Forfeited — — Outstanding at March 31, 2018 20,000 $ 12.29 Exercisable at March 31, 2018 20,000 $ 12.29
Summary of Warrants and Related Information	Warrants Warrants Weighted Average Exercise Price Outstanding at January 1, 2018 20,000 $ 6.64 Granted — — Canceled — — Exercised — — Expired/Forfeited — — Outstanding at March 31, 2018 20,000 $ 6.64 Exercisable at March 31, 2018 20,000 $ 6.64
Summary of Unvested Restricted Stock	The following table summarize information about unvested restricted stock transactions: Shares Weighted Grant Date Fair Value Non-vested, January 1, 2018 1,308,084 $ 25.29 Granted — — Vested (239,559 ) 7.83 Forfeited/Canceled 19,244 6.37 Non-vested, March 31, 2018 1,087,769 $ 28.81
Summary of Grant Date Fair Value of Awards Issued Based on Valuation Assumptions	The grant date fair value of the awards issued on January 7, 2016 was $4.25 and was based on the following range of assumptions for the Company and the peer group: January 7. 2016 Valuation Assumptions: Beginning average stock price (20 trading days prior to January 7, 2016) $4.85 - $63.41 Valuation date stock price (closing values on January 7, 2016) $4.53 - $59.08 Risk free interest rate 1.21 % Expected dividend yield used when simulating the total shareholder return 0.00 % Expected dividend yield used when simulating the Company's stock price 0.00 % Stock price volatility (based on historical stock price over the last 2.98 years) 21.09% - 72.17% Correlation coefficients 0.04 - 0.47 Mr. Haugh, the Company’s Chief Executive Officer, was issued an Employment Inducement Award pursuant to his employment agreement. The terms of the Employment Inducement Award are similar to the retention stock awards provided to all other employees as described above. The grant date fair value of Mr. Haugh’s award issued on February 23, 2016 was $5.75 and was based on the following range of assumptions for the Company and the peer group: February Valuation Assumptions: Beginning average stock price (20 trading days prior to February 23, 2016) $4.86 - $66.71 Valuation date stock price (closing values on February 23, 2016) $5.52 - $69.92 Risk free interest rate 0.90 % Expected dividend yield used when simulating the total shareholder return 0.00 % Expected dividend yield used when simulating the Company's stock price 0.00 % Stock price volatility (based on historical stock price over the last 3.00 years) 24.23% - 74.33% Correlation coefficients 0.06 - 0.50

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Reconciliation of Weighted Average Shares Used in Calculating Basic and Diluted Earnings Per Share	A reconciliation of weighted average shares used in calculating basic and diluted earnings per share follows: For March 31, (in thousands) 2018 2017 Basic 59,117 56,964 Effect of exercise of stock options — — Effect of assumed vesting of restricted stock — — Diluted 59,117 56,964
Impact of Adjustments to Redeemable Non-controlling Interest on Earnings Per Share Calculation	For the Current Quarter and Prior Year Quarter, adjustments to the Company’s redeemable non-controlling interest had an impact on the Company’s earnings per share calculation as follows: Three Months Ended March 31, 2018 2017 Net income from continuing operations attributable to Iconix Brand Group, Inc. $ 32,715 $ 4,402 Accretion of redeemable non-controlling interest (2,483 ) (1,026 ) Net income attributable to Iconix Brand Group, Inc. after accretion of redeemable non-controlling interest 30,232 3,376 Net loss from discontinued operations attributable to Iconix Brand Group, Inc. — (8,682 ) Net income (loss) attributable to Iconix Brand Group, Inc. $ 30,232 $ (5,306 ) Earnings (loss) per share - basic: Continuing operations $ 0.51 $ 0.06 Discontinued operations $ — $ (0.15 ) Earnings (loss) per share - basic $ 0.51 $ (0.09 ) Earnings (loss) per share - diluted: Continuing operations $ 0.51 $ 0.06 Discontinued operations $ — $ (0.15 ) Earnings (loss) per share - diluted $ 0.51 $ (0.09 ) Weighted average number of common shares outstanding: Basic 59,117 56,964 Diluted 59,117 56,964

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Mar. 31, 2018
Related Party Transactions [Abstract]
Summary of Royalty Revenue Recognized	The Company has entered into certain license agreements in which the core licensee is also one of our joint venture partners. For the Current Quarter and Prior Year Quarter, the Company recognized the following royalty revenue amounts: Three Months Ended March 31, 2018 2017 Joint Venture Partner Global Brands Group Asia Limited (1) $ 5,629 $ 3,238 Buffalo International ULC (2) — 690 Rise Partners, LLC / Top On International Group Limited 242 335 M.G.S. Sports Trading Limited 153 92 Pac Brands USA, Inc. 100 33 Albion Equity Partners LLC / GL Damek 585 466 Anthony L&S 17 — MHMC 732 450 $ 7,458 $ 5,304 (1) Royalty revenue of less than $0.1 million for the Prior Year Quarter as compared to none during the Current Quarter was included in the amounts presented in the table above, related to royalty revenue associated with Peanuts Worldwide which has been reclassified in to income from discontinued operations on the Company’s condensed consolidated statement of operations. Additionally, Global Brands Group Asia Limited also served as agent to Peanuts Worldwide in respect of the Greater China Territory for Peanuts brands. As of June 30, 2017, due to the completion of the sale of the Entertainment segment, Global Brands Group Asia Limited is no longer a related party in its capacity as agent of Peanuts Worldwide. For the Prior Year Quarter, Global Brands Group Asia Limited earned fees of approximately $0.8 million in its capacity as agent to Peanuts Worldwide, which have been recorded within discontinued operations in the Company’s condensed consolidated statement of operations. (2) Prior to FY 2017, Buffalo International ULC maintained the Buffalo license agreement. However, starting in February 2017, Buffalo International ULC effectively assigned the Buffalo license agreement to GBG. The license revenue from the Buffalo license agreement represents approximately $5.2 million and $2.5 million of the total license revenue for GBG shown in the table above for the Current Quarter and Prior Year Quarter, respectively.

Accumulated Other Comprehensi41

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table sets forth the activity in accumulated other comprehensive income for the Current Quarter and Prior Year Quarter: Foreign currency translation adjustments Unrealized losses of available for sale securities Total Balance at December 31, 2017 $ (48,103 ) $ (3,177 ) $ (51,280 ) Changes before reclassifications 2,761 — 2,761 Cumulative adjustment for adoption of ASU 2016-01 — 3,177 3,177 Current period other comprehensive income 2,761 3,177 5,938 Balance at March 31, 2018 $ (45,342 ) $ — $ (45,342 ) Foreign currency translation adjustments Unrealized losses of available for sale securities Total Balance at December 31, 2016 $ (67,735 ) $ (2,693 ) $ (70,428 ) Changes before reclassifications 2,630 (571 ) 2,059 Current period other comprehensive income 2,630 (571 ) 2,059 Balance at March 31, 2017 $ (65,105 ) $ (3,264 ) $ (68,369 )

Segment and Geographic Data (Ta

Segment and Geographic Data (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Net Revenues by Type of License and Information by Geographic Region	Reportable data for the Company’s operating segments is as follows: Three Months Ended March 31, 2018 2017 Licensing revenue: Women's $ 16,598 $ 28,143 Men's 9,945 10,193 Home 6,512 7,336 International 15,493 13,050 $ 48,548 $ 58,722 Operating income (loss): Women's $ 14,628 $ 26,281 Men's 5,874 5,944 Home 5,743 6,625 International 6,486 5,520 Corporate (12,238 ) (10,760 ) $ 20,493 $ 33,610

Other Assets- Current and Lon43

Other Assets- Current and Long-Term (Tables)	3 Months Ended
	Mar. 31, 2018
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Other Assets-Current and Long-Term	Other Assets - Current March 31, 2018 December 31, 2017 Other assets- current consisted of the following: Notes receivables on sale of trademarks (1) $ 4,114 $ 3,097 Note receivable in connection with acquisition of interest in Buffalo brand — 2,515 Due from DHX Media, Ltd. (2) 739 1,175 Contract asset - current 6,370 — Prepaid advertising 2,356 2,453 Prepaid expenses 4,239 4,621 US federal tax receivables 29,662 29,662 Prepaid taxes 4,140 2,347 Prepaid insurance 1,153 1,428 Due from related parties 3,899 3,843 Other current assets 492 709 Other current assets $ 57,164 $ 51,850 (1) Certain amounts due from our joint venture partners are presented net of redeemable non-controlling interest and non-controlling interest in the condensed consolidated balance sheet. Refer to Note 5 for further details. (2) This amount represents the remaining amount due from DHX as a result of amounts reimbursable to the Company of $0.7 million associated with the transitional service agreement between DHX and the Company and other expenses which were incurred by the Company subsequent to the completion of the sale of the Entertainment segment on June 30, 2017. Refer to Note 2 for further details. Other Assets – Long Term March 31, December 31, 2018 2017 Other noncurrent assets consisted of the following: Contract asset - long term $ 11,667 $ — Prepaid Interest 5,596 5,601 Deposits 616 616 Other noncurrent assets 46 51 Other noncurrent assets $ 17,925 $ 6,268

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	Feb. 22, 2018	Aug. 02, 2017	Mar. 31, 2018
Basis Of Presentation [Line Items]
Proceeds from long-term debt, net of discount and fees			$ 95,700
5.75% Senior Subordinated Notes Due August 2023
Basis Of Presentation [Line Items]
Debt instrument, interest rate, stated percentage	5.75%
Senior Secured Term Loan
Basis Of Presentation [Line Items]
Proceeds from long-term debt, net of discount and fees	$ 110,000
Debt instrument, maturity date		Aug. 2, 2022
1.50% Senior Subordinated Notes Due March 15, 2018
Basis Of Presentation [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Principal amount of notes exchanged	$ 125,000
Debt instrument, maturity date	Mar. 15, 2018

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	May 09, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amortization of convertible note discount	$ 3,298,000	$ 4,346,000
Senior Secured Term Loan
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amortization of convertible note discount	$ 500,000	0
Operating Segments | Entertainment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Sell price of business			$ 349,100,000
Interest expense		6,100,000
Prepayment premium		15,737,000
Operating Segments | Entertainment | Senior Secured Term Loan
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Amortization of convertible note discount		600,000
Prepayment premium		$ 15,700,000

Discontinued Operations - Summa

Discontinued Operations - Summary of Details of Entertainment Segment (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Other expenses (income):
Loss from operations of discontinued operations before income taxes	$ (12,477)
Benefit for income taxes	(5,098)
Net loss from discontinued operations	(7,379)
Less: Net income attributable to non-controlling interest from discontinued operations	1,303
Net loss from discontinued operations attributable to Iconix Brand Group, Inc.	(8,682)
Operating Segments | Entertainment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Licensing revenue	27,461
Selling, general and administrative expenses	17,850
Depreciation and amortization	185
Operating income	9,426
Other expenses (income):
Interest expense	6,122
Interest income	(99)
Loss on extinguishment of debt	15,737
Foreign currency translation loss	143
Other expenses – net	21,903
Loss from operations of discontinued operations before income taxes	(12,477)
Benefit for income taxes	(5,098)
Net loss from discontinued operations	(7,379)
Less: Net income attributable to non-controlling interest from discontinued operations	1,303
Net loss from discontinued operations attributable to Iconix Brand Group, Inc.	$ (8,682)

Discontinued Operations - Sum47

Discontinued Operations - Summary of Cash Flow of the Entertainment Segment (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net cash used in discontinued operating activities	$ (1,352)
Net cash used in discontinued investing activities	(31)
Operating Segments | Entertainment
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net cash used in discontinued operating activities	(1,352)
Net cash used in discontinued investing activities	$ (31)

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Apr. 01, 2018	Jan. 01, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Increase of retained earnings, net of tax	$ (177,146,000)				$ (223,718,000)
Non-Controlling Interest, net of installment payments due from non-controlling interest holders	25,495,000				$ 23,444,000
Licensing revenue	48,548,000	$ 58,722,000
Revenue, remaining performance obligation			$ 470,000,000
Contract assets, cuurrent	6,370,000
Contract assets, long term	11,667,000
International
Disaggregation Of Revenue [Line Items]
Licensing revenue	2,000,000	0
Selling, General and Administrative Expenses | International
Disaggregation Of Revenue [Line Items]
Cost of goods sold	1,900,000	$ 0
ASC 606
Disaggregation Of Revenue [Line Items]
Deferred revenue	$ 2,200,000
ASC 606 | Other Assets
Disaggregation Of Revenue [Line Items]
Contract assets term	1 year
ASC 606 | Other Assets – Current
Disaggregation Of Revenue [Line Items]
Contract assets, cuurrent	$ 6,400,000
ASC 606 | Other Assets Noncurrent
Disaggregation Of Revenue [Line Items]
Contract assets, long term	13,700,000
ASC 606 | Impact of changes in accounting policies, Effect of Change Increase/(Decrease)
Disaggregation Of Revenue [Line Items]
Increase of retained earnings, net of tax				$ 16,500,000
Non-Controlling Interest, net of installment payments due from non-controlling interest holders				$ 1,200,000
Revenues	$ (1,900,000)

Revenue Recognition - Summary o

Revenue Recognition - Summary of Revenues Disaggregated by License Type (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue		$ 48,548	$ 58,722
Direct To Retail License
Disaggregation Of Revenue [Line Items]
Total revenue		21,213	34,538
Wholesale License
Disaggregation Of Revenue [Line Items]
Total revenue		25,138	24,155
Other Licenses
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	$ 2,197	$ 29
[1]	Included in Other licenses for the Current Quarter is $2.1 million of revenue associated with the Umbro business purchases discussed above of which there was no comparable amount in Prior Year Quarter.

Revenue Recognition - Summary50

Revenue Recognition - Summary of Revenues Disaggregated by License Type (Parenthetical) (Detail) - USD ($)		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue		$ 48,548,000	$ 58,722,000
Other Licenses
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	2,197,000	29,000
Other Licenses | Umbro Business
Disaggregation Of Revenue [Line Items]
Total revenue		$ 2,100,000	$ 0
[1]	Included in Other licenses for the Current Quarter is $2.1 million of revenue associated with the Umbro business purchases discussed above of which there was no comparable amount in Prior Year Quarter.

Revenue Recognition - Summary51

Revenue Recognition - Summary of Revenues Disaggregated by Geography (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Total revenue		$ 48,548	$ 58,722
UNITED STATES
Disaggregation Of Revenue [Line Items]
Total revenue		32,877	44,618
Other
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	$ 15,671	$ 14,104
[1]	No single country represented 10% of the Company’s revenues in the periods presented.

Revenue Recognition - Additio52

Revenue Recognition - Additional Information (Detail1) - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2018
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation		$ 470,000,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2018-04-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 101,000
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2019-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 104,900
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 76,000
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 42,200
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 35,800
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2023-01-01
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation	$ 111,200
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year

Goodwill and Trademarks and O53

Goodwill and Trademarks and Other Intangibles, net - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Intangible Assets By Major Class [Line Items]
Change in goodwill	$ 0	$ 0
Impairment of goodwill	0	0
Amortization of trademarks and other intangibles	96,000	219,000
Trademarks
Intangible Assets By Major Class [Line Items]
Trademark impairment	0	0
Residual value	$ 0
Trademarks | Minimum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	10 years
Trademarks | Maximum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	15 years
Trademarks
Intangible Assets By Major Class [Line Items]
Impairment of the definite-lived trademarks	$ 0	$ 0
Trademarks | Minimum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	10 years
Trademarks | Maximum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	15 years
Non-compete agreements and contracts | Minimum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	1 year
Non-compete agreements and contracts | Maximum
Intangible Assets By Major Class [Line Items]
Finite-lived intangible assets, useful life	15 years

Trademarks and Other Intangible

Trademarks and Other Intangibles, net (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Intangible Assets By Major Class [Line Items]
Gross Carrying Amount	$ 478,427	$ 478,701
Accumulated Amortization	9,752	12,979
Net Carrying Amount	468,675	465,722
Indefinite-lived trademarks
Intangible Assets By Major Class [Line Items]
Indefinite-lived, Gross Carrying Amount	468,435	465,391
Trademarks
Intangible Assets By Major Class [Line Items]
Finite Lived, Gross Carrying Amount	8,958	8,958
Accumulated Amortization	$ 8,927	8,917
Trademarks | Minimum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	10 years
Trademarks | Maximum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	15 years
Non-compete agreements
Intangible Assets By Major Class [Line Items]
Finite Lived, Gross Carrying Amount		940
Accumulated Amortization		940
Non-compete agreements | Minimum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	2 years
Non-compete agreements | Maximum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	15 years
Licensing contracts
Intangible Assets By Major Class [Line Items]
Finite Lived, Gross Carrying Amount	$ 1,034	3,412
Accumulated Amortization	$ 825	$ 3,122
Licensing contracts | Minimum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	1 year
Licensing contracts | Maximum
Intangible Assets By Major Class [Line Items]
Estimated Lives in Years	9 years

Joint Ventures and Investment55

Joint Ventures and Investments - Consolidated Joint Ventures (Detail)	3 Months Ended
	Mar. 31, 2018
Danskin China Limited
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2016-10
Company ownership interest	100.00%
Joint Venture Partner	Li-Ning (China) Sports Goods Co. Ltd.
Umbro China Limited | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2016-07	[1]
Company ownership interest	95.00%	[1]
Joint Venture Partner	Hong Kong MH Umbro International Co. Ltd.	[1]
US Pony Holdings, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2015-02
Company ownership interest	75.00%
Joint Venture Partner	Anthony L&S Athletics, LLC
Hardy Way, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2009-05
Company ownership interest	85.00%
Joint Venture Partner	Donald Edward Hardy
Variable Interest Entity, Primary Beneficiary | Iconix MENA Ltd | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2014-12	[1],[2]
Company ownership interest	55.00%	[1],[2]
Joint Venture Partner	Global Brands Group Asia Limited	[1],[2]
Variable Interest Entity, Primary Beneficiary | Iconix Israel, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2013-11	[2]
Iconix's Ownership %	50.00%	[2]
Joint Venture Partner	MGS	[2]
Variable Interest Entity, Primary Beneficiary | Iconix Europe LLC | Put / Call Options
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2009-12	[1],[2]
Company ownership interest	51.00%	[1],[2]
Joint Venture Partner	Global Brands Group Asia Limited	[1],[2]
Variable Interest Entity, Primary Beneficiary | Hydraulic IP Holdings LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2014-12	[2]
Company ownership interest	51.00%	[2]
Joint Venture Partner	Top On International	[2]
Variable Interest Entity, Primary Beneficiary | Buffalo Brand Joint Venture
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2013-02	[2]
Company ownership interest	51.00%	[2]
Joint Venture Partner	Buffalo International	[2]
Variable Interest Entity, Primary Beneficiary | Diamond Icon
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2013-03	[2]
Company ownership interest	51.00%	[2]
Joint Venture Partner	Albion Agencies Ltd.	[2]
Variable Interest Entity, Primary Beneficiary | Icon Modern Amusement, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2012-12
Company ownership interest	51.00%
Joint Venture Partner	Dirty Bird Productions
[1]	Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for material terms of the put and call options associated with certain of the Company’s joint ventures.
[2]	The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity.

Joint Ventures and Investment56

Joint Ventures and Investments - Consolidated Joint Ventures (Parenthetical) (Detail) - Variable Interest Entity, Primary Beneficiary - Hydraulic IP Holdings LLC		1 Months Ended
		Apr. 30, 2018	Mar. 31, 2018
Schedule Of Investments [Line Items]
Company ownership interest	[1]		51.00%
Subsequent Event
Schedule Of Investments [Line Items]
Ownership interest acquired		49.00%
Ownership interest		100.00%
[1]	The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity.

Joint Ventures and Investment57

Joint Ventures and Investments - Amounts Due from Such Joint Venture Partners Remain Recorded on Consolidated Balance Sheet (Detail) - Iconix India $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Schedule Of Investments [Line Items]
Joint Venture Partner	Reliance Brands Ltd.	[1],[2]
Other Assets - Current
Schedule Of Investments [Line Items]
Joint Venture Partner	Reliance Brands Ltd.
Amount	$ 1,000
[1]	Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for material terms of the put and call options associated with the Company’s joint venture.
[2]	The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, that the joint venture is not a VIE and not subject to consolidation. The Company has recorded its investment under the equity method of accounting since inception.

Joint Ventures and Investment58

Joint Ventures and Investments - Equity Method Investments (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Value of Investment	$ 25,310
Iconix Australia, LLC | Put / Call Options
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	2013-09	[1],[2]
Joint Venture Partner	Pac Brands USA, Inc.	[1],[2]
Iconix India
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	2012-06	[1],[2]
Joint Venture Partner	Reliance Brands Ltd.	[1],[2]
Iconix SE Asia, Ltd. | Put / Call Options
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	2013-10	[1],[2]
Joint Venture Partner	Global Brands Group Asia Limited	[1],[2]
MG Icon
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	2010-03	[1],[2]
Joint Venture Partner	Purim LLC	[1],[2]
Galore Media, Inc.
Schedule Of Equity Method Investments [Line Items]
Date of Original Formation / Investment	2016-04	[1],[2],[3]
Joint Venture Partner	Various minority interest holders	[1],[2],[3]
Candies Shanghai Fashion Co., Ltd. | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed	Candie’s
Ownership by Iconix China	20.00%
Value of Investment	$ 10,343
Shanghai MuXiang Apparel & Accessory Co. Limited | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed	Marc Ecko
Ownership by Iconix China	15.00%
Value of Investment	$ 2,270
Ningo Material Girl Fashion Co., Ltd | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed	Material Girl
Ownership by Iconix China	20.00%
Value of Investment	$ 2,129
Ai Xi Enterprise (Shanghai) Co. Limited | Iconix China Holdings Limited
Schedule Of Equity Method Investments [Line Items]
Brands Placed	Ecko Unltd
Ownership by Iconix China	20.00%
Value of Investment	$ 10,568
[1]	Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 for material terms of the put and call options associated with the Company’s joint venture.
[2]	The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, that the joint venture is not a VIE and not subject to consolidation. The Company has recorded its investment under the equity method of accounting since inception.
[3]	In September 2017, the Company entered into a stock repurchase agreement with Galore Media, Inc. (“Galore”) whereby the Company sold, and Galore agreed to repurchase, the Company’s 50,050 outstanding shares of Series A Preferred Stock of Galore for $0.5 million. Pursuant to the stock repurchase agreement, the Company received $0.3 million upon execution of the agreement and the remaining $0.2 million was received in December 2017. Additionally, pursuant to the stock repurchase agreement, the Company forfeited and surrendered the 46,067 shares of Series A Preferred Stock of Galore that were received in April 2016 upon the Company’s exercise of the initial warrant. All remaining warrants to purchase additional shares of Series A Preferred Stock of Galore were also forfeited as part of the stock repurchase arrangement. This transaction resulted in the Company’s ownership interest in Galore being reduced to zero.

Joint Ventures and Investment59

Joint Ventures and Investments - Equity Method Investments (Parenthetical) (Detail) - Galore Media, Inc. - Series A Preferred Stock $ in Millions	1 Months Ended
	Sep. 30, 2017USD ($)shares
Schedule Of Equity Method Investments [Line Items]
Shares repurchase | shares	50,050
Shares purchased, value	$ 0.5
Share repurchase amount received upon execution of agreement	0.3
Share repurchase remaining amount was received	$ 0.2
Shares repurchase forfeited and surrendered upon execution of agreement | shares	46,067

Joint Ventures and Investment60

Joint Ventures and Investments - Other Equity Investments (Detail)	3 Months Ended
	Mar. 31, 2018
China Outfitters Holdings Ltd
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2008-09	[1]
Marcy Media Holdings, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2013-07	[2]
Complex Media
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2013-09	[2],[3]
iBrand International, LLC
Schedule Of Investments [Line Items]
Date of Original Formation / Investment	2014-04	[2]
[1]	As part of the 2015 purchase of our joint venture partners’ interest in Iconix China, the Company acquired available-for-sale securities in China Outfitters Holdings Ltd. The Company historically recorded the change in fair value through accumulated other comprehensive income on the Company’s condensed consolidated balance sheet. In the Current Quarter, the Company adopted ASU 2016-01 and accordingly, adjustments to the fair value of this entity will be recorded through other income on the Company’s condensed consolidated statement of operations prospectively. As of January 1, 2018, the Company reclassified the $3.2 million cumulative loss in fair value of these available-for-sale securities which were historically recorded in accumulated other comprehensive loss to accumulated losses in accordance with ASU 2016-01. As of March 31, 2018, the fair value of this investment was approximately $1.0 mil
[2]	Historically, given that the Company does not have significant influence over the entity, its investment has been recorded under the cost method of accounting. During the Current Quarter, the Company adopted ASU 2016-01, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. As a result of the adoption of the standard, given that these investments do not have readily determinable fair values and the Company does not have significant influence over the entity, the Company assesses these investments for potential impairment on a quarterly basis. As of March 31, 2018, there were no indicators of impairment for these investments.
[3]	In July 2016, the Company received $35.3 million in connection with the sale of its interest in Complex Media. An additional $3.7 million was held in escrow to satisfy specified indemnification claims, with a portion of such escrow released twelve months following the closing of the transaction and the remainder released eighteen months following the closing of the transaction, subject to any such claims, at which time, the Company recorded the gain within its consolidated statement of operations. The Company recognized a gain of $10.2 million as a result of this transaction which has been recorded in Other Income on the Company’s consolidated statement of operations during the third quarter of the year ended December 31, 2016. In July 2017, the Company received $2.7 million in cash of the total $3.7 million being held in escrow. As a result, the Company has recognized a gain of $2.7 million recorded within Other Income on the Company’s condensed consolidated statement of operations in FY 2017. In January 2018, the Company received the remaining $1.0 million in cash being held in escrow. As a result, the Company has recognized a gain of $1.0 million recorded within Other Income on the Company’s condensed consolidated statement of operations in the Current Quarter.

Joint Ventures and Investment61

Joint Ventures and Investments - Other Equity Investments (Parenthetical) (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jul. 31, 2016	Mar. 31, 2018	Sep. 30, 2016	Dec. 31, 2017	Jan. 31, 2018	Jan. 01, 2018	Jul. 31, 2017
Schedule Of Investments [Line Items]
Fair value of available for sale securities		$ 1
ASU 2016-01
Schedule Of Investments [Line Items]
Cumulative loss in fair value of available-for-sale securities reclassified from accumulated other comprehensive income to accumulated losses resulted from new accounting standard adoption						$ 3.2
Complex Media
Schedule Of Investments [Line Items]
Cash received in connection with sale of interest	$ 35.3
Additional amount held in escrow	$ 3.7						$ 3.7
Period for amount held in escrow	12 months
Period following the closing date for escrow account	18 months
Gain on sale of investments		$ 1	$ 10.2	$ 2.7
Cash received from escrow					$ 1		$ 2.7

Schedule of Gains on Sale of Tr

Schedule of Gains on Sale of Trademarks, Net (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	$ 1,143
Sharper Image Trademark | Iconix Southeast Asia
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	236	[1]
Sharper Image Trademark | Iconix Europe LLC
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	352	[1]
Sharper Image Trademark | Iconix MENA
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	250	[1]
Badgley Mischka Trademark | Iconix Southeast Asia
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	478	[2]
Badgley Mischka Trademark | Iconix Europe LLC
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	(244)	[2]
Badgley Mischka Trademark | Iconix MENA
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	$ 71	[2]
[1]	In December 2016, the Company sold its rights to the Sharper Image intellectual property and related assets to 360 Holdings, Inc. The Sharper Image intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined gain of approximately $0.8 million upon final execution of the agreement for the sale of the Sharper Image intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures.
[2]	In February 2016, the Company sold its rights to the Badgley Mischka intellectual property and related assets to Titan Industries, Inc. in partnership with the founders, Mark Badgley and James Mischka, and the apparel license MJCLK LLC. The Badgley Mischka intellectual property and related assets within other foreign territories, which was owned by certain of the Company’s joint venture entities, required the Company to negotiate and finalize the sale of the intellectual property with its respective joint venture partners. As a result, in the Current Quarter, the Company recognized an additional combined net gain of approximately $0.3 million upon final execution of the agreement for the sale of the Badgley Mischka intellectual property and related assets which were previously owned by the Iconix Southeast Asia, Iconix Europe and Iconix MENA joint ventures.

Gains on Sale of Trademarks, 63

Gains on Sale of Trademarks, net - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Dec. 31, 2016	Feb. 29, 2016	Mar. 31, 2018
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks			$ 1,143
Sharper Image intellectual property and related assets
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks	$ 800
Badgley Mischka Intellectual Property and Related Assets
Schedule Of Gain Loss On Investments Including Marketable Securities And Investments Held At Cost Income Statement Reported Amounts Summary [Line Items]
Net gains (losses) on sale of trademarks		$ 300

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Impairment of long-lived assets	$ 0	$ 0
Fair value of available for sale securities	$ 1,000,000

Estimated Fair Values of Other

Estimated Fair Values of Other Financial Instruments (Detail) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Long-term debt, including current portion, Carrying Amount	[1]	$ 758,351	$ 800,842
Long-term debt, including current portion, Fair Value	[1]	$ 769,136	$ 747,818
[1]	Carrying amounts include aggregate unamortized debt discount and debt issuance costs.

Fair Value Option - Additional

Fair Value Option - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Feb. 22, 2018	Dec. 31, 2017
Fair Value Option Qualitative Disclosures Related To Election [Line Items]
Long term debt, fair value		$ 109,455		$ 0
Principal outstanding balance	[1]	$ 758,351		$ 800,842
5.75% Senior Subordinated Notes Due August 2023
Fair Value Option Qualitative Disclosures Related To Election [Line Items]
Debt instrument, interest rate, stated percentage		5.75%
Convertible Notes
Fair Value Option Qualitative Disclosures Related To Election [Line Items]
Debt instrument, interest rate, stated percentage		1.50%
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Fair Value Option Qualitative Disclosures Related To Election [Line Items]
Debt instrument, interest rate, stated percentage		5.75%	5.75%
Long term debt, fair value		$ 109,500
Principal outstanding balance		116,200
Change in fair value of convertible notes		$ 24,400
[1]	Carrying amounts include aggregate unamortized debt discount and debt issuance costs.

Schedule of Debt Obligations (D

Schedule of Debt Obligations (Detail) - USD ($) $ in Thousands		Mar. 31, 2018		Dec. 31, 2017
Debt Instrument [Line Items]
Total debt		$ 769,722
Unamortized debt issuance costs		(11,371)		$ (7,406)
Total debt	[1]	758,351		800,842
Less current maturities		46,549		44,349
Total long-term debt		711,802		756,493
Senior Secured Notes
Debt Instrument [Line Items]
Total debt		397,500		408,174
Less current maturities		42,700		42,700
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Total debt				233,898
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Total debt	[2],[3]	109,455
Total debt		116,200
Variable Funding Notes
Debt Instrument [Line Items]
Total debt		92,294	[4]	91,363
Senior Secured Term Loan
Debt Instrument [Line Items]
Total debt		170,473		74,813
Less current maturities		$ 3,900		$ 1,700
[1]	Carrying amounts include aggregate unamortized debt discount and debt issuance costs.
[2]	On February 12, 2018, the Company entered into the Exchange Agreements and consummated the Note Exchange on February 22, 2018, pursuant to which the Company exchanged approximately $125.0 million aggregate principal amount of its 1.50% Convertible Notes for 5.75% Convertible Notes issued by the Company in an aggregate principal amount of approximately $125.0 million. See below for further details.
[3]	Reflects the debt carrying amount which is accounted for under the Fair Value Option in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the 5.75% Convertible Notes is $116.2 million as of March 31, 2018.
[4]	Reflects the net debt carrying amount, effected by the outstanding balance of the original issue discount, in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the Variable Funding Notes is $100.0 million as of March 31, 2018.

Schedule of Debt Obligations (P

Schedule of Debt Obligations (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 16, 2018	Feb. 22, 2018	Dec. 31, 2017	Oct. 27, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Mar. 18, 2013
Debt Instrument [Line Items]
Principal amount of long term debt					$ 240.7	$ 0
1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.75%
Convertible Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.50%		1.50%	1.50%			1.50%	1.50%	1.50%
Principal amount of long term debt			$ 125						$ 400
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.75%		5.75%
Principal amount of long term debt	$ 116.2	$ 8.8	$ 125

Debt Arrangements - Additional

Debt Arrangements - Additional Information (Detail)		Mar. 15, 2018USD ($)	Mar. 14, 2018USD ($)	Feb. 22, 2018USD ($)d	Dec. 07, 2017USD ($)	Nov. 02, 2017USD ($)	Oct. 27, 2017USD ($)	Aug. 18, 2017USD ($)	Aug. 02, 2017USD ($)	Jun. 30, 2017USD ($)	Apr. 04, 2016USD ($)	Mar. 07, 2016USD ($)	Mar. 18, 2013USD ($)d$ / shares	Nov. 29, 2012USD ($)	Mar. 16, 2018USD ($)shares	Jul. 31, 2017USD ($)	Jan. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Feb. 28, 2015USD ($)	Jul. 31, 2014USD ($)	Mar. 31, 2018USD ($)shares	Mar. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)shares	Jul. 31, 2019	Feb. 12, 2018USD ($)	Nov. 24, 2017USD ($)	Oct. 26, 2017USD ($)	Jun. 21, 2013USD ($)
Debt Instrument [Line Items]
Principal amount of long term debt							$ 240,700,000			$ 0
Net proceeds received from issuance of debt																					$ 95,700,000
Payments of securitized financing transaction																					4,841,000
Payment for the acquisition of Brand																					201,000	$ 11,000
Payment of long-term debt																					122,380,000	105,921,000
Deferred financing costs							5,400,000																	$ 200,000
Gain (loss) on extinguishment of debt																					4,473,000	(5,482,000)
Debt issue discount costs							9,300,000
Current portion of long-term debt																					46,549,000			44,349,000
Restricted cash																					43,719,000			48,766,000
Cash interest expense for convertible notes																					0	6,300,000
Repayment of remaining outstanding principal balance					$ 5,000,000		$ 231,000,000
Non cash additional interest expense on convertible notes																					$ 3,298,000	4,346,000
Leverage ratio							450.00%
Net proceeds from Permitted Capital Raising Transactions							$ 100,000,000
Financial covenant compliance on a pro forma basis																					The Company raising additional funds through various sources (and/or achieving a reduction in the outstanding principal amount of the 2018 Notes) in an aggregate amount of at least $100 million which will be utilized to repay the 2018 Notes and provide at least $25 million of additional cash to enhance liquidity and be used for general corporate purposes, (ii) the Company being in financial covenant compliance, on a pro forma basis as of the time of the requested borrowing and on a projected basis for the succeeding 12 months
Projected Succeding period of borrowings							12 months
Long term debt, fair value																					$ 109,455,000			0
Principal outstanding balance	[1]																				$ 758,351,000			800,842,000
Maximum
Debt Instrument [Line Items]
Leverage ratio							575.00%
Aggregate amount of term loan facility							$ 165,700,000
1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage																					1.50%
Repurchase of equity portion of convertible notes																					$ 23,250,000
5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage																					5.75%
5.75% Senior Subordinated Notes Due August 2023 | Common Stock
Debt Instrument [Line Items]
Shares issued on conversion of 5.75% Convertible Notes (in shares) | shares																					6,412,000
MG Icon
Debt Instrument [Line Items]
Equity ownership percentage														50.00%
Hardy Way, LLC
Debt Instrument [Line Items]
Joint venture ownership percentage														85.00%
Zoo York brand
Debt Instrument [Line Items]
Ownership Percentage														100.00%
IBG Borrower
Debt Instrument [Line Items]
Termination of license generating with minimum royalty guarantees									$ 500,000
IBG Borrower | Minimum
Debt Instrument [Line Items]
Asset coverage ratio, minimum									125.00%
IBG Borrower | Maximum
Debt Instrument [Line Items]
Leverage ratio									450.00%
Ice Cream Trademarks
Debt Instrument [Line Items]
Equity ownership percentage																														50.00%
2012 Senior Secured Notes
Debt Instrument [Line Items]
Principal amount of long term debt														$ 600,000,000
Debt instrument, quarterly payment														10,500,000
Debt instrument, frequency of payment																					quarterly
Proceeds from issuance of debt instrument														150,400,000
Payments of securitized financing transaction														20,900,000
2012 Senior Secured Notes | Umbro
Debt Instrument [Line Items]
Payment for the acquisition of Brand														218,300,000
Variable Funding Notes
Debt Instrument [Line Items]
Principal amount of long term debt														100,000,000							$ 100,000,000
Net proceeds received from issuance of debt																			$ 100,000,000
Commitment fee on the unused portion of the variable funding notes facility																			0.50%
Debt Instrument anticipated repayment year and month								2020-01											2018-01
Additional interest rate																			5.00%
L/C commitment and the swingline commitment								$ 0
2013 Senior Secured Notes
Debt Instrument [Line Items]
Principal amount of long term debt																														$ 275,000,000
Debt instrument, quarterly payment														4,800,000
Debt instrument, frequency of payment																					quarterly
Payments of securitized financing transaction														$ 7,200,000
Senior Secured Notes
Debt Instrument [Line Items]
Principal amount of long term debt																					$ 497,500,000			508,200,000
Debt Instrument anticipated repayment year and month														2020-01
Additional interest rate														5.00%
Debt instrument, Maturity Date														2043-01
Debt instrument description of interest														If the Co-Issuers have not repaid or refinanced the Senior Secured Notes prior to the anticipated repayment date, additional interest will accrue on the Senior Secured Notes at a rate equal to the greater of (A) 5% per annum and (B) a per annum interest rate equal to the excess, if any, by which the sum of (i) the yield to maturity (adjusted to a quarterly bond-equivalent basis), on the anticipated repayment date of the United States treasury security having a term closest to 10 years plus (ii) 5% plus (iii) with respect to the 2012 Senior Secured Notes, 3.4%, or with respect to the 2013 Senior Secured Notes, 3.14%, exceeds the original interest rate.
Anticipated repayment date														10 years
Payment of long-term debt																				$ 1,600,000
Debt instrument, annual principal prepayment																	$ 36,700,000
Deferred financing costs																	500,000
Gain (loss) on extinguishment of debt																$ (2,300,000)	(500,000)
Debt instrument, quarterly principal payments																	4,500,000
Mandatory principal prepayment																152,200,000
Debt issue discount costs																2,000,000
Prepayment penalty																300,000
Current portion of long-term debt																					42,700,000			42,700,000
Restricted cash																					42,900,000			$ 29,900,000
Cash interest expense for convertible notes																					$ 5,600,000	8,100,000
2012 Senior Secured Notes
Debt Instrument [Line Items]
Excess interest rate on original interest rate														3.40%
Debt instrument, quarterly principal payments																	9,900,000
Debt instrument, decrease in quarterly principal payments																7,300,000
2013 Senior Secured Notes
Debt Instrument [Line Items]
Excess interest rate on original interest rate														3.14%
Debt instrument, decrease in quarterly principal payments																$ 3,400,000
Convertible Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage																					1.50%
Cash from escrow deposit returned to lenders							231,000,000
Payment from Escrow Account to acquire convertible notes																							$ 59,200,000
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Principal amount of long term debt				$ 125,000,000									$ 400,000,000
Net proceeds received from issuance of debt													$ 390,600,000
Cash interest expense for convertible notes																					$ 700,000	$ 1,100,000
Debt instrument, interest rate, stated percentage				1.50%									1.50%					1.50%			1.50%	1.50%		1.50%	1.50%
Debt instrument, par value of notes repurchased																		$ 104,900,000						$ 58,900,000	$ 104,900,000
Debt instrument, cash paid to repurchase convertible notes																								59,300,000	36,700,000
Debt instrument, gain (loss) on repurchase of convertible notes																								(1,500,000)	9,600,000
Repurchase of equity portion of convertible notes																									$ 1,200,000
Repayment of remaining outstanding principal balance		$ 111,200,000
Debt instrument, payment terms																					The 1.50% Convertible Notes bore interest at an annual rate of 1.50%, payable semi-annually in arrears on March 15 and September 15 of each year, beginning on September 15, 2013.
Debt instrument, effective interest rate													6.50%
Debt instrument, conversion rate													32.4052
Principal amount of each convertible note													$ 1,000
Convertible notes, initial conversion price per share | $ / shares													$ 30.86
Non cash additional interest expense on convertible notes																					$ 2,400,000	$ 3,200,000
Maturity date of credit agreement				Mar. 15, 2018
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018 | Scenario 1
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days | d													20
Debt instrument, convertible, threshold consecutive trading days | d													30
Debt instrument, redemption price, percentage																					100.00%
Debt instrument, redemption, description																					price equal to 100% of the principal amount of the 1.50% Convertible Notes, plus accrued and unpaid interest, if any.
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018 | Scenario 2
Debt Instrument [Line Items]
Debt instrument, convertible, threshold trading days | d													5
Debt instrument, convertible, threshold consecutive trading days | d													5
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018 | Minimum
Debt Instrument [Line Items]
Percentage of closing price to trigger debt conversion													130.00%
Reduction in outstanding principal amount				$ 100,000,000
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018 | Maximum
Debt Instrument [Line Items]
Percentage of closing price to trigger debt conversion													98.00%
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018 | Common Stock
Debt Instrument [Line Items]
Debt instrument, shares issued to repurchase convertible notes | shares																									7,400,000
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Principal amount of long term debt				$ 125,000,000											$ 8,800,000						$ 116,200,000
Cash interest expense for convertible notes																					$ 700,000	0
Debt instrument, interest rate, stated percentage				5.75%																	5.75%
Debt instrument, convertible, threshold trading days | d				10
Debt instrument, convertible, threshold consecutive trading days | d				30
Debt instrument, redemption price, percentage				100.00%
Debt instrument, redemption, description				Each holder will have the right, at its option, to require the Company to repurchase for cash all or a portion of such holder’s 5.75% Convertible Notes at a fundamental change purchase price equal to 100% of the principal amount of the 5.75% Convertible Notes to be repurchased, together with interest accrued and unpaid to, but excluding, the fundamental change purchase date.
Reduction in outstanding principal amount															$ 9,600,000
Debt instrument convertible conversion price as percentage upon automatic conversion				5.75%
Debt instrument convertible conversion price as percentage upon mandatory conversion				5.75%
Volume weighted average price description				If the Company elects to pay all or a portion of a Conversion Make-Whole Payment in shares of common stock, the number of shares of common stock payable will be equal to the applicable Conversion Make-Whole Payment divided by the average of the 10 individual volume-weighted average prices for the 10-trading day period immediately preceding the applicable conversion date.
Debt instrument, restrictive covenants				The Company will be subject to certain restrictive covenants pursuant to the 5.75% Convertible Note Indenture, including limitations on (i) liens, (ii) indebtedness, (iii) asset sales, (iv) restricted payments and investments, (v) prepayments of indebtedness and (vi) transactions with affiliates.
Shares issued on conversion of 5.75% Convertible Notes (in shares) | shares															4,500,000
Stock issued pursuant to conversion settlement | shares															1,900,000
Long term debt, fair value																					$ 109,500,000
Principal outstanding balance																					116,200,000
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023 | Fair Value Option
Debt Instrument [Line Items]
Long term debt, fair value																					109,500,000
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023 | Other Income
Debt Instrument [Line Items]
Gain on conversion of debt															$ 800,000
Convertible Notes | 2.50% Senior Subordinated Notes Due June 2016
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage											2.50%
Second Delayed Draw Term Loan
Debt Instrument [Line Items]
Aggregate amount of term loan received in cash			$ 110,000,000
Aggregate amount of term loan facility			140,700,000
Second Delayed Draw Term Loan | 1.50% Senior Subordinated Notes Due March 15, 2018
Debt Instrument [Line Items]
Aggregate amount of term loan facility			$ 110,000,000
2016 Senior Secured Term Loan
Debt Instrument [Line Items]
Principal amount of long term debt										0		$ 300,000,000
Debt instrument, annual principal prepayment																		28,700,000							$ 28,700,000
Deferred financing costs																		1,000,000						800,000	1,000,000
Gain (loss) on extinguishment of debt																		(7,400,000)						(5,000,000)
Mandatory principal prepayment																	23,500,000
Debt issue discount costs																		2,100,000						1,700,000
Maturity date of credit agreement												Mar. 7, 2021
Margin applied to LIBOR												10.00%
Net proceeds received from issuance of debt											$ 264,200,000
Premium prepayment of aggregate principal amount																		4,300,000
Voluntary prepayment amount																	23,000,000
Voluntary prepayment premium																	3,400,000
Additional mandatory prepayment premium																	$ 3,400,000
2016 Senior Secured Term Loan | Discontinued Operations | Entertainment
Debt Instrument [Line Items]
Debt instrument, annual principal prepayment										140,000,000
Deferred financing costs										4,700,000
Debt issue discount costs										9,400,000
Premium prepayment of aggregate principal amount										15,200,000
2016 Senior Secured Term Loan | Continuing Operations
Debt Instrument [Line Items]
Deferred financing costs										2,300,000
Debt issue discount costs										4,400,000
Voluntary prepayment amount										66,000,000
Voluntary prepayment premium										$ 7,200,000
2016 Senior Secured Term Loan | Accounts Payable And Accrued Liabilities
Debt Instrument [Line Items]
Accrued Expenses																		$ 6,800,000							$ 6,800,000
2016 Senior Secured Term Loan | LIBOR
Debt Instrument [Line Items]
LIBOR floor												1.50%
Senior Secured Term Loan
Debt Instrument [Line Items]
Principal amount of long term debt							57,800,000		$ 300,000,000												192,300,000								$ 300,000,000
Net proceeds received from issuance of debt				$ 110,000,000
Deferred financing costs							800,000
Gain (loss) on extinguishment of debt							8,800,000
Debt issue discount costs																					21,800,000			8,000,000
Current portion of long-term debt																					3,900,000			1,700,000
Cash interest expense for convertible notes																					2,200,000	0
Repayment of remaining outstanding principal balance																					5,000,000
Non cash additional interest expense on convertible notes																					500,000	$ 0
Maturity date of credit agreement									Aug. 2, 2022
Margin applied to LIBOR									7.00%
Percentage of principal debt quarterly amortization									0.50%
Principal debt quarterly amortization commencement date									Sep. 30, 2017
Estimated principal payments																												$ 12,000,000
Interest rate increase additional per annum									3.00%
Payment of unpaid principal and accrued interest of lenders									50.00%
Principal amount of long term debt																					$ 170,500,000			$ 74,800,000
Senior Secured Term Loan | IBG Borrower
Debt Instrument [Line Items]
Equity ownership percentage									35.00%
Premium percentage of aggregate principal amount first year loan									5.00%
Premium percentage of aggregate principal amount second year loan									3.00%
First Delayed Draw Term Loan
Debt Instrument [Line Items]
Debt issue discount costs						$ 1,000,000
Aggregate amount of term loan received in cash						24,000,000
Aggregate amount of term loan facility						$ 25,000,000	$ 25,000,000
Senior Secured Term Loan Due 2022 | Minimum
Debt Instrument [Line Items]
Amortization rate per annum							2.00%
Senior Secured Term Loan Due 2022 | Maximum | Scenario, Forecast
Debt Instrument [Line Items]
Amortization rate per annum																										10.00%
Second Delayed Draw Term Loan | Minimum
Debt Instrument [Line Items]
Additional funds to be raised through various sources							$ 100,000,000
Additional funds to enhance liquidity for general corporate purpose							$ 25,000,000
5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage				5.75%
Estimated principal payments																											$ 6,100,000
5.75% Senior Subordinated Notes Due August 2023 | Maximum
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage																											5.75%
[1]	Carrying amounts include aggregate unamortized debt discount and debt issuance costs.

Company's Debt Maturities on Ca

Company's Debt Maturities on Calendar Year Basis (Detail) - USD ($) $ in Thousands		Mar. 31, 2018		Dec. 31, 2017
Debt Instrument [Line Items]
Total		$ 769,722
April 1 through December 31, 2018		34,913
2,019		54,263
2,020		154,271
2,021		61,977
2,022		160,135
Thereafter		304,163
Senior Secured Notes
Debt Instrument [Line Items]
Total		397,500		$ 408,174
April 1 through December 31, 2018		32,020
2,019		42,693
2,020		42,693
2,021		42,693
2,022		42,693
Thereafter		194,708
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Total	[1],[2]	109,455
Thereafter	[2]	109,455
Variable Funding Notes
Debt Instrument [Line Items]
Total		92,294	[3]	$ 91,363
2,020	[3]	92,294
2017 Senior Secured Term Loan
Debt Instrument [Line Items]
Total	[4]	170,473
April 1 through December 31, 2018	[4]	2,893
2,019	[4]	11,570
2,020	[4]	19,284
2,021	[4]	19,284
2,022	[4]	$ 117,442
[1]	On February 12, 2018, the Company entered into the Exchange Agreements and consummated the Note Exchange on February 22, 2018, pursuant to which the Company exchanged approximately $125.0 million aggregate principal amount of its 1.50% Convertible Notes for 5.75% Convertible Notes issued by the Company in an aggregate principal amount of approximately $125.0 million. See below for further details.
[2]	Reflects the debt carrying amount which is accounted for under the Fair Value Option in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the 5.75% Convertible Notes is $116.2 million as of March 31, 2018.
[3]	Reflects the net debt carrying amount, effected by the outstanding balance of the original issue discount, in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the Variable Funding Notes is $100.0 million as of March 31, 2018.
[4]	Reflects the net debt carrying amount, effected by the outstanding balance of the original issue discount, in the unaudited condensed consolidated balance sheet as of March 31, 2018. The actual principal outstanding balance of the Senior Secured Term Loan is $192.3 million as of March 31, 2018.

Company's Debt Maturities on 71

Company's Debt Maturities on Calendar Year Basis (Parenthetical) (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Mar. 16, 2018	Feb. 22, 2018	Oct. 27, 2017	Oct. 26, 2017	Aug. 02, 2017	Jun. 30, 2017	Nov. 29, 2012
Debt Instrument [Line Items]
Principal amount of long term debt				$ 240.7			$ 0
5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.75%
Variable Funding Notes
Debt Instrument [Line Items]
Principal amount of long term debt	$ 100							$ 100
Senior Secured Term Loan
Debt Instrument [Line Items]
Principal amount of long term debt	$ 192.3			$ 57.8	$ 300	$ 300
Convertible Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Convertible Notes | 5.75% Senior Subordinated Notes Due August 2023
Debt Instrument [Line Items]
Principal amount of long term debt	$ 116.2	$ 8.8	$ 125
Debt instrument, interest rate, stated percentage	5.75%		5.75%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($)

Mar. 15, 2018

Oct. 31, 2017

Mar. 07, 2017

Mar. 31, 2016

Feb. 23, 2016

Jan. 07, 2016

Aug. 15, 2012

Aug. 13, 2009

Mar. 31, 2018

Mar. 31, 2017

Mar. 31, 2016

Mar. 31, 2018

Sep. 30, 2017

May 07, 2018

Nov. 04, 2016

Class Of Stock [Line Items]

Stock options granted

0

Value of common stock shares repurchased in connection with net share settlement of restricted stock grants and option exercises

$ 25,000

Warrant

Class Of Stock [Line Items]

Share based compensation awards granted in period

0

0

Weighted average contractual term of awards outstanding and exercisable

6 months 3 days

Stock Options

Class Of Stock [Line Items]

Compensation expense related to stock grants

$ 0

$ 0

Stock options granted

0

0

Weighted average contractual term of awards outstanding and exercisable

1 year 3 months 3 days

Restricted Stock

Class Of Stock [Line Items]

Compensation expense related to stock grants

$ 1,000,000

$ 1,700,000

Compensation cost not yet recognized

$ 7,900,000

7,900,000

Compensation cost not yet recognized, period for recognition

2 years

Value of common stock shares repurchased in connection with net share settlement of restricted stock grants and option exercises

900,000

Share based compensation awards forfeited in period

19,244

Restricted Stock | Maximum

Class Of Stock [Line Items]

Share based compensation awards vesting period

3 years

Value of common stock shares repurchased in connection with net share settlement of restricted stock grants and option exercises

$ 100,000

Retention Stock

Class Of Stock [Line Items]

Compensation expense related to stock grants

200,000

400,000

Share based compensation awards granted in period

7,500,000

Share based compensation awards vesting period

3 years

Compensation cost not yet recognized

$ 900,000

$ 900,000

Share based compensation awards granted in period, value

$ 1,300,000

Grant date fair value of award issued

$ 4.25

Employment Inducement Award | Mr. Haugh

Class Of Stock [Line Items]

Grant date fair value of award issued

$ 5.75

2009 Equity Incentive Plan

Class Of Stock [Line Items]

Number of common stock shares authorized under Equity Incentive Plan

3,000,000

Plan expiration date

Aug. 13, 2019

Amended and Restated 2009 Equity Incentive Plan

Class Of Stock [Line Items]

Number of common stock shares authorized under Equity Incentive Plan

7,000,000

Plan expiration date

Aug. 15, 2022

Number of additional common stock shares approved for issuance under Incentive Plan

4,000,000

2016 Omnibus Incentive Plan

Class Of Stock [Line Items]

Number of additional common stock shares approved for issuance under Incentive Plan

1,900,000

Common stock reserved for issuance

0

0

2,400,000

2016 Omnibus Incentive Plan | Subsequent Event

Class Of Stock [Line Items]

Common stock reserved for issuance

1,900,000

Long-Term Incentive Compensation | Performance Shares

Class Of Stock [Line Items]

Compensation expense related to stock grants

$ 300,000

$ 100,000

Compensation cost not yet recognized

$ 4,600,000

$ 4,600,000

2016 LTIP

Class Of Stock [Line Items]

Share based compensation awards granted in period

707,028

Share based compensation awards granted in period, value

$ 5,200,000

$ 5,200,000

Granted

$ 7.31

Share based compensation awards forfeited in period

100,000

2016 LTIP | Performance Shares

Class Of Stock [Line Items]

Weighted average contractual term of awards outstanding and exercisable

1 year

2016 LTIP | Performance Shares | Mr. Haugh

Class Of Stock [Line Items]

Share based compensation awards, form of awards percentage

75.00%

Description of award conversion

One-third of Mr. Haugh’s PSUs shall be converted to time-based awards on December 31, 2016, December 31, 2017 and December 31, 2018, based on the achievement of aggregate adjusted operating income performance targets established by the Compensation Committee

2016 LTIP | Performance Shares | Other Than Mr Haugh

Class Of Stock [Line Items]

Share based compensation awards vesting period

3 years

Share based compensation awards, form of awards percentage

67.00%

Share based compensation award, description of vesting rights

based on the achievement of an aggregate adjusted operating income performance target established by the Compensation Committee

2016 LTIP | RSUs

Class Of Stock [Line Items]

Share based compensation awards vesting period

3 years

Share based compensation award, description of vesting rights

three equal installments annually

2016 LTIP | RSUs | Mr. Haugh

Class Of Stock [Line Items]

Share based compensation awards, form of awards percentage

25.00%

2016 LTIP | RSUs | Other Than Mr Haugh

Class Of Stock [Line Items]

Share based compensation awards, form of awards percentage

33.00%

2016 LTIP | Time Based Awards | Mr. Haugh

Class Of Stock [Line Items]

Share based compensation award, description of vesting rights

vest and be settled on December 31, 2018

2017 LTIP

Class Of Stock [Line Items]

Share based compensation awards granted in period

871,011

Share based compensation awards granted in period, value

$ 6,600,000

Granted

$ 7.52

Share based compensation awards forfeited in period

0

100,000

2017 LTIP | Performance Shares

Class Of Stock [Line Items]

Weighted average contractual term of awards outstanding and exercisable

2 years

Share based compensation awards, form of awards percentage

67.00%

Share based compensation award, description of vesting rights

based on performance metrics approved by the Compensation Committee

2017 LTIP | RSUs

Class Of Stock [Line Items]

Share based compensation awards, form of awards percentage

33.00%

Share based compensation award, description of vesting rights

one third annually

2018 LTIP

Class Of Stock [Line Items]

Share based compensation awards granted in period

2,241,828

Share based compensation awards vesting period

15 days

Share based compensation awards granted in period, value

$ 3,100,000

Granted

$ 1.38

Share based compensation award, description of vesting rights

48 equal semi-monthly installments

Share based compensation awards forfeited in period

0

Share based compensation cash awards, aggregate amount.

$ 3,100,000

2018 LTIP | Performance Shares

Class Of Stock [Line Items]

Weighted average contractual term of awards outstanding and exercisable

3 years

Share based compensation awards, form of awards percentage

50.00%

2018 LTIP | Cash Grant

Class Of Stock [Line Items]

Share based compensation awards, form of awards percentage

50.00%

Summary of Stock Options Activi

Summary of Stock Options Activity and Related Information (Detail)	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Options
Beginning balance | shares	20,000
Granted | shares	0
Canceled | shares	0
Exercised | shares	0
Expired/Forfeited | shares	0
Ending balance | shares	20,000
Exercisable at March 31, 2018 | shares	20,000
Weighted Average Exercise Price
Beginning balance | $ / shares	$ 12.29
Granted | $ / shares	0
Canceled | $ / shares	0
Exercised | $ / shares	0
Expired/Forfeited | $ / shares	0
Ending balance | $ / shares	12.29
Exercisable at March 31, 2018 | $ / shares	$ 12.29

Summary of Warrants and Related

Summary of Warrants and Related Information (Detail) - Warrant - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Warrants
Outstanding	20,000
Granted	0	0
Outstanding	20,000
Exercisable at March 31, 2018	20,000
Weighted Average Exercise Price
Outstanding	$ 6.64
Outstanding	6.64
Exercisable at March 31, 2018	$ 6.64

Summary of Unvested Restricted

Summary of Unvested Restricted Stock (Detail) - Restricted Stock	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Shares
Beginning balance | shares	1,308,084
Vested | shares	(239,559)
Expired/Forfeited | shares	19,244
Ending balance | shares	1,087,769
Weighted Average Grant Date Fair Value
Beginning balance | $ / shares	$ 25.29
Vested | $ / shares	7.83
Forfeited/Canceled | $ / shares	6.37
Ending balance | $ / shares	$ 28.81

Summary of Grant Date Fair Valu

Summary of Grant Date Fair Value of Awards Issued Based on Valuation Assumptions (Detail) - $ / shares	Feb. 23, 2016	Jan. 07, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free interest rate		1.21%
Expected dividend yield used when simulating the total shareholder return		0.00%
Expected dividend yield used when simulating the Company's stock price		0.00%
Stock price volatility, minimum		21.09%
Stock price volatility, maximum		72.17%
Mr. Haugh
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk free interest rate	0.90%
Expected dividend yield used when simulating the total shareholder return	0.00%
Expected dividend yield used when simulating the Company's stock price	0.00%
Stock price volatility, minimum	24.23%
Stock price volatility, maximum	74.33%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning average stock price		$ 4.85
Valuation date stock price		$ 4.53
Correlation coefficients		0.04%
Minimum | Mr. Haugh
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning average stock price	$ 4.86
Valuation date stock price	$ 5.52
Correlation coefficients	0.06%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning average stock price		$ 63.41
Valuation date stock price		$ 59.08
Correlation coefficients		0.47%
Maximum | Mr. Haugh
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning average stock price	$ 66.71
Valuation date stock price	$ 69.92
Correlation coefficients	0.50%

Summary of Grant Date Fair Va77

Summary of Grant Date Fair Value of Awards Issued Based on Valuation Assumptions (Parenthetical) (Detail)	Jan. 27, 2016	Jan. 07, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock price volatility, historical stock price term		2 years 11 months 23 days
Mr. Haugh
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock price volatility, historical stock price term	3 years

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Feb. 22, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 18, 2013
Earnings Per Share Disclosure [Line Items]
Anti-dilutive shares	600,000	100,000
1.50% Senior Subordinated Notes Due March 15, 2018
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Convertible Notes
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate, stated percentage	1.50%
Convertible Notes | 1.50% Senior Subordinated Notes Due March 15, 2018
Earnings Per Share Disclosure [Line Items]
Debt instrument, interest rate, stated percentage	1.50%	1.50%	1.50%	1.50%	1.50%	1.50%
Performance Shares
Earnings Per Share Disclosure [Line Items]
Anti-dilutive shares	800,000
Performance Shares | Maximum
Earnings Per Share Disclosure [Line Items]
Anti-dilutive shares		100,000

Reconciliation of Weighted Aver

Reconciliation of Weighted Average Shares Used in Calculating Basic and Diluted Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share Disclosure [Line Items]
Basic	59,117	56,964
Diluted	59,117	56,964

Impact of Adjustments to Redeem

Impact of Adjustments to Redeemable Non-controlling Interest on Earnings Per Share Calculation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income from continuing operations attributable to Iconix Brand Group, Inc.	$ 32,715	$ 4,402
Accretion of redeemable non-controlling interest	(2,483)	(1,026)
Net income attributable to Iconix Brand Group, Inc. after accretion of redeemable non-controlling interest	30,232	3,376
Net loss from discontinued operations attributable to Iconix Brand Group, Inc.		(8,682)
Net income (loss) attributable to Iconix Brand Group, Inc.	$ 30,232	$ (5,306)
Earnings (loss) per share - basic:
Continuing operations	$ 0.51	$ 0.06
Discontinued operations		(0.15)
Earnings (loss) per share - basic	0.51	(0.09)
Earnings (loss) per share - diluted:
Continuing operations	0.51	0.06
Discontinued operations		(0.15)
Earnings (loss) per share - diluted	$ 0.51	$ (0.09)
Weighted average number of common shares outstanding:
Basic	59,117	56,964
Diluted	59,117	56,964

Contingencies - Additional Info

Contingencies - Additional Information (Detail)	Jan. 12, 2018USD ($)	Nov. 03, 2017USD ($)	Nov. 01, 2017USD ($)	Oct. 27, 2017USD ($)	Aug. 31, 2017USD ($)	Apr. 30, 2016USD ($)	Jul. 31, 2013USD ($)	Mar. 31, 2018Claim
Loss Contingencies [Line Items]
Number of consolidated claims | Claim								3
Signature Apparel Group LLC v. ROC Fashions, LLC
Loss Contingencies [Line Items]
Application to reimburse counsel fees and expenses	$ 4,200,000
Signature Apparel Group LLC v. ROC Fashions, LLC | Signature's principals
Loss Contingencies [Line Items]
Disgorgement of consulting fees					$ 2,050,000
Signature Apparel Group LLC v. ROC Fashions, LLC | Maximum
Loss Contingencies [Line Items]
Compensatory damages sought		$ 70,000,000
Signature Apparel Group LLC v. ROC Fashions, LLC | Minimum
Loss Contingencies [Line Items]
Compensatory damages sought							$ 8,800,000
3TAC, LLC and West Loop South, LLC
Loss Contingencies [Line Items]
Compensatory damages sought				$ 19,000,000
Seth Gerszberg and EGRHC, LLC
Loss Contingencies [Line Items]
Compensatory damages sought			$ 100,000,000
New Rise Brands Holdings, LLC and Sichuan New Rise Import & Export Co. Ltd v. IP Holdings, LLC
Loss Contingencies [Line Items]
Compensatory damages sought						$ 15,000,000
Punitive damages						$ 50,000,000

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - Galore Media, Inc. - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Related Party Transaction [Line Items]
Advertising expenses	$ 0
Maximum
Related Party Transaction [Line Items]
Advertising expenses		$ 100,000

Related Party Transactions - Su

Related Party Transactions - Summary of Royalty Revenue Recognized (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Related Party Transaction [Line Items]
Royalty revenue		$ 7,458	$ 5,304
Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Royalty revenue	[1]	5,629	3,238
Buffalo International ULC
Related Party Transaction [Line Items]
Royalty revenue	[2]		690
Rise Partners, LLC / Top On International Group Limited
Related Party Transaction [Line Items]
Royalty revenue		242	335
M.G.S. Sports Trading Limited
Related Party Transaction [Line Items]
Royalty revenue		153	92
Pac Brands USA, Inc.
Related Party Transaction [Line Items]
Royalty revenue		100	33
Albion Equity Partners LLC / GL Damek
Related Party Transaction [Line Items]
Royalty revenue		585	466
Anthony L&S
Related Party Transaction [Line Items]
Royalty revenue		17
MHMC
Related Party Transaction [Line Items]
Royalty revenue		$ 732	$ 450
[1]	Royalty revenue of less than $0.1 million for the Prior Year Quarter as compared to none during the Current Quarter was included in the amounts presented in the table above, related to royalty revenue associated with Peanuts Worldwide which has been reclassified in to income from discontinued operations on the Company’s condensed consolidated statement of operations. Additionally, Global Brands Group Asia Limited also served as agent to Peanuts Worldwide in respect of the Greater China Territory for Peanuts brands. As of June 30, 2017, due to the completion of the sale of the Entertainment segment, Global Brands Group Asia Limited is no longer a related party in its capacity as agent of Peanuts Worldwide. For the Prior Year Quarter, Global Brands Group Asia Limited earned fees of approximately $0.8 million in its capacity as agent to Peanuts Worldwide, which have been recorded within discontinued operations in the Company’s condensed consolidated statement of operations.
[2]	Prior to FY 2017, Buffalo International ULC maintained the Buffalo license agreement. However, starting in February 2017, Buffalo International ULC effectively assigned the Buffalo license agreement to GBG. The license revenue from the Buffalo license agreement represents approximately $5.2 million and $2.5 million of the total license revenue for GBG shown in the table above for the Current Quarter and Prior Year Quarter, respectively.

Related Party Transactions - 84

Related Party Transactions - Summary of Royalty Revenue Recognized (Parenthetical) (Detail) - USD ($)		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Related Party Transaction [Line Items]
Royalty revenue		$ 7,458,000	$ 5,304,000
Licensing revenue		48,548,000	58,722,000
Peanuts Holdings, LLC
Related Party Transaction [Line Items]
Royalty revenue		0
Peanuts Holdings, LLC | Maximum
Related Party Transaction [Line Items]
Royalty revenue			100,000
Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Royalty revenue	[1]	5,629,000	3,238,000
Earned fees			800,000
Licensing revenue		$ 5,200,000	$ 2,500,000
[1]	Royalty revenue of less than $0.1 million for the Prior Year Quarter as compared to none during the Current Quarter was included in the amounts presented in the table above, related to royalty revenue associated with Peanuts Worldwide which has been reclassified in to income from discontinued operations on the Company’s condensed consolidated statement of operations. Additionally, Global Brands Group Asia Limited also served as agent to Peanuts Worldwide in respect of the Greater China Territory for Peanuts brands. As of June 30, 2017, due to the completion of the sale of the Entertainment segment, Global Brands Group Asia Limited is no longer a related party in its capacity as agent of Peanuts Worldwide. For the Prior Year Quarter, Global Brands Group Asia Limited earned fees of approximately $0.8 million in its capacity as agent to Peanuts Worldwide, which have been recorded within discontinued operations in the Company’s condensed consolidated statement of operations.

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended			12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2017
Income Taxes [Line Items]
Unrecognized tax benefits, interest expense	$ 0
Effective income tax rate from continuing operations	4.40%		46.10%
Provision for income taxes	$ 1,650,000		$ 5,887,000
Income tax provision (benefit), federal rate	21.00%			35.00%
Estimated income tax benefit		$ 67,000,000
Net income tax provision		34,000,000
Income tax benefit valuation allowance		$ 101,000,000
Undistributed earnings and profits in foreign subsidiary	$ 0
Maximum
Income Taxes [Line Items]
Unrecognized tax benefits, interest expense			$ 100,000

Schedule of Accumulated Other C

Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (50,976)
Current period other comprehensive income	2,761	$ 2,059
Ending Balance	(9,867)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(48,103)	(67,735)
Changes before reclassifications	2,761	2,630
Current period other comprehensive income	2,761	2,630
Ending Balance	(45,342)	(65,105)
Unrealized Losses of Available for Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(3,177)	(2,693)
Changes before reclassifications		(571)
Current period other comprehensive income	3,177	(571)
Ending Balance		(3,264)
Unrealized Losses of Available for Sale Securities | ASU 2016-01
Accumulated Other Comprehensive Income Loss [Line Items]
Cumulative adjustment for adoption of ASU 2016-01	3,177
AOCI Attributable to Parent
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(51,280)	(70,428)
Changes before reclassifications	2,761	2,059
Current period other comprehensive income	5,938	2,059
Ending Balance	(45,342)	$ (68,369)
AOCI Attributable to Parent | ASU 2016-01
Accumulated Other Comprehensive Income Loss [Line Items]
Cumulative adjustment for adoption of ASU 2016-01	$ 3,177

Net Revenues by Type of License

Net Revenues by Type of License and Information by Geographic Region (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Segment Reporting Information [Line Items]
Licensing revenue	$ 48,548,000	$ 58,722,000
Operating income (loss)	20,493,000	33,610,000
International
Segment Reporting Information [Line Items]
Licensing revenue	2,000,000	0
Operating Segments | Women's
Segment Reporting Information [Line Items]
Licensing revenue	16,598,000	28,143,000
Operating income (loss)	14,628,000	26,281,000
Operating Segments | Men's
Segment Reporting Information [Line Items]
Licensing revenue	9,945,000	10,193,000
Operating income (loss)	5,874,000	5,944,000
Operating Segments | Home
Segment Reporting Information [Line Items]
Licensing revenue	6,512,000	7,336,000
Operating income (loss)	5,743,000	6,625,000
Operating Segments | International
Segment Reporting Information [Line Items]
Licensing revenue	15,493,000	13,050,000
Operating income (loss)	6,486,000	5,520,000
Corporate
Segment Reporting Information [Line Items]
Operating income (loss)	$ (12,238,000)	$ (10,760,000)

Other Assets - Current (Detail)

Other Assets - Current (Detail) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Prepaid Expenses And Other Current Assets [Line Items]
Notes receivables on sale of trademarks	[1]	$ 4,114	$ 3,097
Due from related parties		3,899	3,843
Contract assets, cuurrent		6,370
Prepaid advertising		2,356	2,453
Prepaid expenses		4,239	4,621
US federal tax receivables		29,662	29,662
Prepaid taxes		4,140	2,347
Prepaid insurance		1,153	1,428
Other current assets		492	709
Total		57,164	51,850
DHX Media, Ltd.
Prepaid Expenses And Other Current Assets [Line Items]
Due from related parties	[2]	$ 739	1,175
Buffalo Brand Joint Venture
Prepaid Expenses And Other Current Assets [Line Items]
Note receivable			$ 2,515
[1]	Certain amounts due from our joint venture partners are presented net of redeemable non-controlling interest and non-controlling interest in the condensed consolidated balance sheet. Refer to Note 5 for further details.
[2]	This amount represents the remaining amount due from DHX as a result of amounts reimbursable to the Company of $0.7 million associated with the transitional service agreement between DHX and the Company and other expenses which were incurred by the Company subsequent to the completion of the sale of the Entertainment segment on June 30, 2017. Refer to Note 2 for further details.

Other Assets - Current (Parenth

Other Assets - Current (Parenthetical) (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
DHX Media, Ltd.
Prepaid Expenses And Other Current Assets [Line Items]
Transitional service agreement and other expenses	$ 0.7

Other Assets - Long-Term (Detai

Other Assets - Long-Term (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]
Contract assets, long term	$ 11,667
Prepaid Interest	5,596	$ 5,601
Deposits	616	616
Other noncurrent assets	46	51
Total	$ 17,925	$ 6,268

Other Liabilities - Current - A

Other Liabilities - Current - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other Current Liabilities [Line Items]
Other liabilities – current	$ 10,236	$ 13,581
Buffalo Brand
Other Current Liabilities [Line Items]
Due to joint ventures	0	4,400
Certain Joint Venture , Not Consolidated
Other Current Liabilities [Line Items]
Due to joint ventures	$ 10,200	$ 9,200

Foreign Currency Translation -

Foreign Currency Translation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Foreign Currency [Abstract]
Gain (loss) on foreign currency translation	$ 551	$ (429)
Foreign currency translation gain (loss)	$ 2,761	$ 2,630

Accounting Pronouncements - Add

Accounting Pronouncements - Additional Information (Detail) $ in Millions	Jan. 01, 2018USD ($)
ASU 2016-01
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Cumulative loss in fair value of available-for-sale securities reclassified from accumulated other comprehensive income to accumulated losses resulted from new accounting standard adoption	$ 3.2

Other Matters - Additional Info

Other Matters - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Selling, General and Administrative Expenses
Other Matters [Line Items]
Professional Fees	$ 2.7	$ 2.2

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended
		Apr. 30, 2018	May 07, 2018	Apr. 26, 2018	Mar. 31, 2018	Dec. 31, 2017	Nov. 04, 2016
Subsequent Event [Line Items]
Common stock, par value					$ 0.001	$ 0.001
Common stock, shares authorized					150,000,000	150,000,000
Variable Interest Entity, Primary Beneficiary | Hydraulic IP Holdings LLC
Subsequent Event [Line Items]
Company ownership interest	[1]				51.00%
5.75% Senior Subordinated Notes Due August 2023
Subsequent Event [Line Items]
Debt instrument, interest rate, stated percentage					5.75%
2016 Omnibus Incentive Plan
Subsequent Event [Line Items]
Common stock reserved for issuance					0		2,400,000
Subsequent Event
Subsequent Event [Line Items]
Common stock, shares authorized				260,000,000
Subsequent Event | Variable Interest Entity, Primary Beneficiary | Hydraulic IP Holdings LLC
Subsequent Event [Line Items]
Ownership interest acquired		49.00%
Ownership interest		100.00%
Subsequent Event | 5.75% Senior Subordinated Notes Due August 2023
Subsequent Event [Line Items]
Debt outstanding principal balance converted amount		$ 2.8
Debt instrument, interest rate, stated percentage		5.75%
Subsequent Event | 5.75% Senior Subordinated Notes Due August 2023 | Common Stock
Subsequent Event [Line Items]
Number of shares of common stock issued in debt conversion		2,300,000
Subsequent Event | 2016 Omnibus Incentive Plan
Subsequent Event [Line Items]
Common stock reserved for issuance			1,900,000
[1]	The Company determined, in accordance with ASC 810, based on the corporate structure, voting rights and contributions of the Company and its respective joint venture partner, the entity is a variable interest entity (VIE) and, as the Company has been determined to be the primary beneficiary, is subject to consolidation. The Company has consolidated this joint venture within its consolidated financial statements since inception. The liabilities of the VIE are not material and none of the VIE assets are encumbered by any obligation of the VIE or other entity.