Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Tax Assets
Accruals and reserves not currently deductible	$ 5,294	$ 5,647
State NOL carryovers	70	21
Accrued and deferred compensation	1,987	2,562
Prepaid items	111	891
Lease liability	694	1,033
Contract liability	283	1,215
Deferred revenues	4,094	11,328
Unrealized loss on investments	2,375	276
Other	1,240	1,266
Subtotal before valuation allowance	16,148	24,239
Less: valuation allowance	(2,375)	0
Total Deferred Tax Assets	13,773	24,239
Deferred Tax Liabilities
Property and equipment	(20,475)	(22,607)
Right-of-use asset	(1,282)	(1,663)
Other	(6)	(124)
Total Deferred Tax Liabilities	(21,763)	(24,394)
Net Deferred Income Tax Liabilities	$ (7,990)	$ (155)