Supplemental Financial Information - Other Long-term Liabilities (Detail) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Liabilities, Noncurrent [Abstract]
2016 MIP - Dividend equivalents	[1]	$ 8,798	$ 8,735
Noncurrent deferred revenue		1,647	1,893
Noncurrent operating lease liabilities		644	969
Other non-current liabilities		5,415	5,415
Other long-term liabilities		$ 16,504	$ 17,012

[1] Dividend Equivalents on vested TBGs are payable on settlement of the applicable award.