Related Party Transactions - Summary of Royalty Revenue Recognized (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Related Party Transaction [Line Items]
Royalty revenue		$ 46,224	$ 53,165	$ 144,984	$ 173,535
Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Royalty revenue		2,300	6,000	13,400	12,700
Royalty
Related Party Transaction [Line Items]
Royalty revenue		4,798	7,730	20,804	18,969
Royalty | Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Royalty revenue	[1]	2,587	6,472	14,353	14,168
Royalty | Buffalo International ULC
Related Party Transaction [Line Items]
Royalty revenue	[2]				690
Royalty | Rise Partners, LLC / Top On International Group Limited
Related Party Transaction [Line Items]
Royalty revenue		242		725	695
Royalty | M.G.S. Sports Trading Limited
Related Party Transaction [Line Items]
Royalty revenue		139	188	475	405
Royalty | Pac Brands USA, Inc.
Related Party Transaction [Line Items]
Royalty revenue		47	74	171	197
Royalty | Albion Equity Partners LLC / GL Damek
Related Party Transaction [Line Items]
Royalty revenue		776	448	1,993	1,366
Royalty | Anthony L&S
Related Party Transaction [Line Items]
Royalty revenue			98	617	98
Royalty | Sports Direct International plc
Related Party Transaction [Line Items]
Royalty revenue		275		275
Royalty | MHMC
Related Party Transaction [Line Items]
Royalty revenue		$ 732	$ 450	$ 2,195	$ 1,350

[1] 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 and Prior Year Nine Months, Global Brands Group Asia Limited earned fees of approximately $0 million and less than $1.6 million, respectively, 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 $2.3 million and $6.0 million of the total license revenue for GBG shown in the table above for the Current Quarter and Prior Year Quarter, respectively. The license revenue from the Buffalo license agreement represents approximately $13.4 million and $12.7 million of the total license revenue for GBG shown in the table above for the Current Nine Months and Prior Year Nine Months, respectively.