Non-interest Income and Expense - Components of Non-Interest Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ 11,197	$ 11,696
Increase in cash value of life insurance	802	638
Asset management and commission income	934	887
Gain on sale of loans	206	1,246
Lease brokerage income	98	158
Sale of customer checks	288	104
Loss on sale of investment securities	(164)	0
Gain (loss) on marketable equity securities	42	(137)
Other	232	504
Total other non-interest income	2,438	3,400
Total non-interest income	13,635	15,096
ATM and interchange fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	6,344	6,243
Service charges on deposit accounts
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	3,431	3,834
Other service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	1,166	882
Mortgage banking service fees
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	465	463
Change in value of mortgage servicing rights
Schedule Of Other Noninterest Income And Expense [Line Items]
Total service charges and fees	$ (209)	$ 274