CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Interest income:
Loans, including fees	$ 29,220,000	$ 26,232,000	$ 84,331,000	$ 76,503,000
Investment securities	2,315,000	2,393,000	7,175,000	6,530,000
Fed funds sold and interest-bearing balances in banks	3,017,000	4,414,000	8,359,000	13,348,000
FHLB dividends	253,000	243,000	750,000	762,000
FRB dividends	145,000	144,000	434,000	433,000
Total interest and dividend income	34,950,000	33,426,000	101,049,000	97,576,000
Interest expense:
Deposits	9,777,000	9,448,000	27,669,000	26,677,000
Subordinated debt	1,571,000	892,000	3,354,000	2,676,000
Junior subordinated deferrable interest debentures	193,000	221,000	577,000	656,000
Total interest expense	11,541,000	10,561,000	31,600,000	30,009,000
Net interest income	23,409,000	22,865,000	69,449,000	67,567,000
Provision for credit losses	2,973,000	1,245,000	3,818,000	1,668,000
Net interest income after provision for credit losses	20,436,000	21,620,000	65,631,000	65,899,000
Noninterest income:
Gain on sale of loans			251,000	287,000
Gain on equity securities	771,000	1,420,000	523,000	1,672,000
Loan servicing and other loan fees	403,000	324,000	1,308,000	1,157,000
Loss on investment in Small Business Investment Company ("SBIC") fund	(29,000)	(253,000)	(365,000)	(212,000)
Other income and fees	278,000	356,000	801,000	915,000
Total noninterest income	2,248,000	2,745,000	5,201,000	6,290,000
Noninterest expense:
Salaries and employee benefits	10,168,000	9,569,000	29,831,000	29,247,000
Occupancy and equipment	2,143,000	2,209,000	6,462,000	6,496,000
Data processing	2,038,000	1,973,000	5,804,000	5,376,000
Other expense	1,597,000	2,323,000	5,592,000	7,038,000
Total noninterest expense	15,946,000	16,074,000	47,689,000	48,157,000
Income before provision for income taxes	6,738,000	8,291,000	23,143,000	24,032,000
Provision for income taxes	1,731,000	2,274,000	6,070,000	6,538,000
Net income	$ 5,007,000	$ 6,017,000	$ 17,073,000	$ 17,494,000
Earnings per common share:
Basic earnings per common share (in dollars per share)	$ 0.46	$ 0.54	$ 1.55	$ 1.55
Weighted average common shares outstanding (in shares)	10,929,779	11,148,482	11,022,179	11,308,901
Diluted earnings per common share (in dollars per share)	$ 0.46	$ 0.54	$ 1.55	$ 1.55
Weighted average common shares outstanding (in shares)	10,929,779	11,148,482	11,022,179	11,308,901
Service charges and other fees
Noninterest income:
Service charges and other fees	$ 825,000	$ 898,000	$ 2,683,000	$ 2,471,000