Income Taxes - Summary of Income Tax Provision Reconciled to Income Taxes that Computed at Statutory Federal Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal income tax, at statutory rates	$ 30,238	$ 26,740	$ 15,703
Increase (deduction) in taxes resulting from:
Tax-exempt income	(2,085)	(1,114)	(961)
State income tax, net of federal income tax effect	6,942	6,176	2,178
Excess tax (benefits) expense from employee share-based payments	(69)	89	132
Non-deductible expenses	1,524	0	0
Other, net	73	403	207
Total provision for income taxes	$ 36,623	$ 32,294	$ 17,259