Net Revenues by Type of License and Information by Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Licensing revenue				$ 108,576	$ 148,984
Type of Revenue [Extensible List]				us-gaap:LicenseMember	us-gaap:LicenseMember
Operating income (loss)	$ 3,765	$ (1,087)	$ 65,263	$ 67,601	$ (31,532)
International
Segment Reporting Information [Line Items]
Licensing revenue				$ 900	$ 900
Type of Revenue [Extensible List]				us-gaap:LicenseMember	us-gaap:LicenseMember
Operating Segments | Women's
Segment Reporting Information [Line Items]
Licensing revenue				$ 25,248	$ 37,491
Operating income (loss)				3,652	(961)
Operating Segments | Men's
Segment Reporting Information [Line Items]
Licensing revenue				22,737	36,793
Operating income (loss)				10,103	24,878
Operating Segments | Home
Segment Reporting Information [Line Items]
Licensing revenue				16,194	14,753
Operating income (loss)				9,486	(4,932)
Operating Segments | International
Segment Reporting Information [Line Items]
Licensing revenue				44,397	59,947
Operating income (loss)				20,621	23,487
Corporate
Segment Reporting Information [Line Items]
Operating income (loss)				$ 23,739	$ (74,004)