Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss and credit carryforwards	$ 828	$ 21,828
Capital loss	0	429
Accrued compensation	8,033	6,046
Stock-based compensation	5,487	5,996
Deferred revenue	1,741	1,966
Lease liabilities	8,568	9,083
Other, net	2,556	2,630
Total gross deferred tax assets	27,213	47,978
Valuation allowance	(202)	(16,801)	$ (67,735)	$ (43,824)
Deferred tax assets, net of valuation allowance	27,011	31,177
Deferred tax liabilities:
Amortization	(42,875)	(44,644)
Depreciation	(237)	(756)
Right-of-use assets	(4,677)	(4,871)
Other, net	(41)	(30)
Total gross deferred tax liabilities	(47,830)	(50,301)
Net deferred tax liabilities	$ (20,819)	$ (19,124)