Related Party Transactions - Summary of Royalty Revenue Recognized (Parenthetical) (Detail) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Revenue		$ 50,212,000	$ 61,647,000	$ 98,761,000	$ 120,370,000
Type of Revenue [Extensible List]		us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember	us-gaap:LicenseMember
Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Revenue		$ 5,900,000	$ 4,200,000	$ 11,100,000	$ 6,700,000
Earned fees			0
Royalty
Related Party Transaction [Line Items]
Revenue		8,550,000	5,935,000	16,008,000	11,239,000
Royalty | Peanuts Holdings, LLC
Related Party Transaction [Line Items]
Revenue		0	700,000	0	1,600,000
Royalty | Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Revenue	[1]	$ 6,138,000	$ 4,458,000	$ 11,767,000	7,696,000
Maximum | Global Brands Group Asia Limited
Related Party Transaction [Line Items]
Earned fees					$ 100,000

[1] Royalty revenue of approximately $0.7 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. Royalty revenue of $1.6 million for the Prior Year Six Months as compared to none during the Current Six Months was included in the amounts presented in the table above, related to royalty revenue associated with Peanuts Worldwide which has been reclassified into 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 and Prior Year Six Months, Global Brands Group Asia Limited earned fees of approximately $0 million and less than $0.1 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.