Revenue Recognition - Summary of Revenues Disaggregated by License Type (Parenthetical) (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Disaggregation Of Revenue [Line Items]
Total revenue		$ 35,942	$ 48,548
Other Licenses
Disaggregation Of Revenue [Line Items]
Total revenue	[1]	383	2,197
Other Licenses | Umbro Business
Disaggregation Of Revenue [Line Items]
Total revenue		$ 400	$ 2,000

[1] Included in Other licenses for the Current Quarter and Prior Year Quarter is $0.4 million and $2.0 million, respectively, of revenue associated with the Umbro business purchases discussed above.