Non-interest Income and Expense - Components of Non-Interest Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ 12,637	$ 11,197
Increase in cash value of life insurance	803	802
Asset management and commission income	1,128	934
Gain on sale of loans	261	206
Lease brokerage income	161	98
Sale of customer checks	312	288
Loss on sale of investment securities	0	(164)
(Loss) gain on marketable equity securities	(28)	42
Other	497	232
Total other non-interest income	3,134	2,438
Total non-interest income	15,771	13,635
ATM and interchange fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	6,169	6,344
Service charges on deposit accounts
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	4,663	3,431
Other service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	1,366	1,166
Mortgage banking service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	428	465
Change in value of mortgage servicing rights
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ 11	$ (209)