Supplemental Financial Information - Other Long-term Liabilities (Detail) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Liabilities, Noncurrent [Abstract]
2016 MIP - Dividend equivalents	[1]	$ 3,521	$ 8,735
Noncurrent deferred revenue		1,397	1,893
Noncurrent operating lease liabilities		333	969
Other non-current liabilities		4,707	5,415
Other long-term liabilities		$ 9,958	$ 17,012

[1] “Dividend equivalents” on vested TBGs are payable upon settlement of the applicable award.