CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Interest income:
Loans, including fees	$ 154,675	$ 115,396	$ 113,648
Investment securities:
Taxable	10,674	8,662	3,604
Nontaxable	4,741	4,140	3,854
Federal funds sold	829	2,889	983
Total interest income	170,919	131,087	122,089
Interest expense:
Deposits	40,394	15,818	14,712
Other short-term borrowings	11,330	173	0
FHLB borrowings	5,309	94	2,915
Total interest expense	57,033	16,085	17,627
Net interest income	113,886	115,002	104,462
Credit loss expense (benefit) (Note 3)	15,621	6,340	(5,507)
Net interest income after credit loss expense (benefit)	98,265	108,662	109,969
Noninterest income:
Net gain on sale of loans	1,541	1,517	7,588
Other noninterest income	541	1,333	581
Total other income	28,606	27,780	33,464
Noninterest expenses:
Salaries and employee benefits	44,897	43,468	42,458
Occupancy	4,408	4,549	4,152
Furniture and equipment	6,835	6,937	7,276
Office supplies and postage	1,879	1,837	1,739
Advertising and business development	2,851	2,576	2,132
Outside services	13,791	12,766	12,592
FDIC insurance assessment	1,807	1,079	1,043
Other noninterest expenses	1,929	2,363	9,949
Total other expenses	78,397	75,575	81,341
Income before income taxes	48,474	60,867	62,092
Income taxes (Note 11)	10,298	13,114	14,007
Net income	$ 38,176	$ 47,753	$ 48,085
Earnings per share:
Basic (in dollars per share)	$ 4.16	$ 5.15	$ 5.16
Diluted (in dollars per share)	$ 4.16	$ 5.15	$ 5.16
Trust fees
Noninterest income:
Fee income	$ 13,578	$ 12,284	$ 13,521
Service charges and fees
Noninterest income:
Fee income	$ 12,946	$ 12,646	$ 11,774