Consolidated Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Non-Voting Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-In Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Accumulated Other Comprehensive Loss [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Non-Voting Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2022	$ (39)	$ (39)	$ 56	$ 13	$ 89,813	$ 61,056	$ (2,037)	$ (9,692)	$ 139,209	$ 56	$ 13	$ 89,813	$ 61,095	$ (2,037)	$ (9,692)	$ 139,248
Net income													12,702			12,702
Other comprehensive income (loss)														(347)		(347)
Issuance of stock based incentive plan shares, net of forfeitures										1		(1)
Restricted stock expense, net of forfeitures												875				875
Stock options exercised												44				44
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(96)	(96)
Acquisition of treasury shares surrendered upon exercise of stock options for payment of exercise price															(27)	(27)
Cash dividends declared on common stock													(1,090)			(1,090)
Balance at Sep. 30, 2023										57	13	90,731	72,668	(2,384)	(9,815)	151,270
Balance at Jun. 30, 2023										57	13	90,422	69,022	(2,401)	(9,772)	147,341
Net income													4,031			4,031
Other comprehensive income (loss)														17		17
Restricted stock expense, net of forfeitures												294				294
Stock options exercised												15				15
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(24)	(24)
Acquisition of treasury shares surrendered upon exercise of stock options for payment of exercise price															(19)	(19)
Cash dividends declared on common stock													(385)			(385)
Balance at Sep. 30, 2023										57	13	90,731	72,668	(2,384)	(9,815)	151,270
Balance at Dec. 31, 2023										57	13	91,068	76,517	(2,290)	(9,991)	155,374
Net income													8,970			8,970
Other comprehensive income (loss)														330		330
Restricted stock expense, net of forfeitures												842				842
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(129)	(129)
Purchase of treasury shares															(223)	(223)
Conversion of shares of voting common stock to Series D Preferred Stock										(2)		2
Cash dividends declared on common stock													(1,136)			(1,136)
Cash dividends declared on Series D preferred Stock ($6.00 per share)													(25)			(25)
Balance at Sep. 30, 2024										55	13	91,912	84,326	(1,960)	(10,343)	164,003
Balance at Jun. 30, 2024										55	13	91,586	80,509	(2,237)	(10,336)	159,590
Net income													4,205			4,205
Other comprehensive income (loss)														277		277
Restricted stock expense, net of forfeitures												326				326
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(7)	(7)
Cash dividends declared on common stock													(375)			(375)
Cash dividends declared on Series D preferred Stock ($6.00 per share)													(13)			(13)
Balance at Sep. 30, 2024										$ 55	$ 13	$ 91,912	$ 84,326	$ (1,960)	$ (10,343)	$ 164,003