CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Beginning balance, value at Dec. 31, 2020	$ 936	$ 56,279	$ 309,764	$ 675	$ 367,654	$ 14,999	$ 382,653
Common shares outstanding at Dec. 31, 2020	9,363,717
Exercise of stock options	$ 2	267	0	0	269	0	269
Stock options exercised	15,334
Stock option grant compensation	$ 0	69	0	0	69	0	69
Restricted stock compensation	0	492	0	0	492	0	492
Shares granted to Employee	$ 0	50	0	0	50	0	50
Shares granted to Employee	1,098
Shares granted to Directors	$ 1	499	0	0	500	0	500
Director shares granted	9,105
Restricted stock award	$ 3	(3)	0	0	0	0	0
Restricted shares awarded	27,778
Shares purchased and cancelled	$ (1)	(36)	(227)	0	(264)	0	(264)
Stock Repurchased During Period, Shares	(6,004)
Contributions from partner	$ 0	0	0	0	0	4,551	4,551
Net income	0	0	28,215	0	28,215	11,879	40,094
Distributions to partners	0	0	0	0	0	(2,602)	(2,602)
Minimum pension liability, net	0	0	0	(38)	(38)	0	(38)
Unrealized gains on investment, net	0	0	0	(524)	(524)	0	(524)
Ending balance, value at Dec. 31, 2021	$ 941	57,617	337,752	113	396,423	28,827	425,250
Common shares outstanding at Dec. 31, 2021	9,411,028
Exercise of stock options	$ 2	410	0	0	412	0	412
Stock options exercised	16,460
Stock option grant compensation	$ 0	69	0	0	69	0	69
Restricted stock compensation	0	800	0	0	800	0	800
Shares granted to Employee	$ 0	50	0	0	50	0	50
Shares granted to Employee	865
Shares granted to Directors	$ 1	649	0	0	650	0	650
Director shares granted	11,232
Restricted stock award	$ 2	(2)	0	0	0	0	0
Restricted shares awarded	21,464
Contributions from partner	$ 0	0	0	0	0	27,894	27,894
Net income	0	0	4,565	0	4,565	(518)	4,047
Distributions to partners	0	0	0	0	0	(11,472)	(11,472)
Minimum pension liability, net	0	0	0	(31)	(31)	0	(31)
Unrealized gains on investment, net	0	0	0	(1,358)	(1,358)	0	(1,358)
Forfeiture of restricted stock award	$ 0	0	0	0	0	0	0
Restricted stock forfeited	(1,363)
Reallocation of partners’ interest	$ 0	7,665	0	0	7,665	(7,665)	0
Reallocation income tax expense	0	(2,100)	0	0	(2,100)	0	(2,100)
Ending balance, value at Dec. 31, 2022	$ 946	65,158	342,317	(1,276)	407,145	37,066	$ 444,211
Common shares outstanding at Dec. 31, 2022	9,459,686						9,459,686
Exercise of stock options	$ 2	1,022	0	0	1,024	0	$ 1,024
Stock options exercised	24,855
Stock option grant compensation	$ 0	60	0	0	60	0	60
Restricted stock compensation	0	1,028	0	0	1,028	0	1,028
Shares granted to Employee	$ 0	50	0	0	50	0	50
Shares granted to Employee	928
Shares granted to Directors	$ 1	599	0	0	600	0	600
Director shares granted	10,380
Restricted stock award	$ 3	(3)	0	0	0	0	0
Restricted shares awarded	25,284
Shares purchased and cancelled	$ (4)	(259)	(1,737)	0	(2,000)	0	(2,000)
Stock Repurchased During Period, Shares	(36,909)
Net income	$ 0	0	5,302	0	5,302	(420)	4,882
Distributions to partners	0	0	0	0	0	(3,190)	(3,190)
Minimum pension liability, net	0	0	0	(30)	(30)	0	(30)
Unrealized gains on investment, net	0	0	0	1,341	1,341	0	1,341
Ending balance, value at Dec. 31, 2023	$ 948	$ 67,655	$ 345,882	$ 35	$ 414,520	$ 33,456	$ 447,976
Common shares outstanding at Dec. 31, 2023	9,484,224						9,484,224