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													4,448			4,448
Other comprehensive income (loss)														(216)		(216)
Issuance of stock based incentive plan shares, net of forfeitures										1		(1)
Restricted stock expense, net of forfeitures												283				283
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(71)	(71)
Cash dividends declared on common stock													(320)			(320)
Balance at Mar. 31, 2023										57	13	90,095	65,184	(2,253)	(9,763)	143,333
Balance at Dec. 31, 2023			$ 57	$ 13	$ 91,068	$ 76,517	$ (2,290)	$ (9,991)	$ 155,374							155,374
Net income													3,070			3,070
Other comprehensive income (loss)														9		9
Issuance of stock based incentive plan shares, net of forfeitures
Restricted stock expense, net of forfeitures												233				233
Acquisition of treasury shares surrendered upon vesting of restricted stock for payment of taxes															(122)	(122)
Purchase of treasury shares															(179)	(179)
Conversion of shares of voting common stock to Series D Preferred Stock										(2)		2
Cash dividends declared on common stock													(386)			(386)
Balance at Mar. 31, 2024										$ 55	$ 13	$ 91,303	$ 79,201	$ (2,281)	$ (10,292)	$ 157,999