Non-interest Income and Expense - Components of Non Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Other Income and Expenses [Abstract]
Base salaries, net of deferred loan origination costs	$ 24,020	$ 23,000
Incentive compensation	3,257	2,895
Benefits and other compensation costs	7,027	6,668
Total salaries and benefits expense	34,304	32,563
Occupancy	3,951	4,160
Data processing and software	5,107	4,032
Equipment	1,356	1,383
Intangible amortization	1,030	1,656
Advertising	762	759
ATM and POS network charges	1,661	1,709
Professional fees	1,340	1,589
Telecommunications	511	595
Regulatory assessments and insurance	1,251	792
Postage	308	299
Operational losses	352	435
Courier service	480	339
(Gain) on sale or acquisition of foreclosed assets	(38)	0
Gain on disposal of fixed assets	5	0
Other miscellaneous expense	4,124	3,483
Total other non-interest expense	22,200	21,231
Total non-interest expense	$ 56,504	$ 53,794