Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Effective income tax rate reconciliation
Computed provision for income taxes at the statutory rate	$ 11,362	$ 24,790
State income tax provision, net of federal income tax benefit	1,189	2,757
Non-deductible expenses	60	52
Tax exempt income	0	(2,100)
Valuation allowance changes affecting the provision for income taxes	2,375	0
Return to provision adjustments	9	0
Other, net	(2)	(78)
Provision for income taxes	$ 14,993	$ 25,421