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
Stock option grant compensation	$ 0	35	0	0	35	0	35
Restricted stock compensation	0	269	0	0	269	0	269
Shares granted to Employees	0	50	0	0	50	0	50
Restricted stock award	3	(3)	0	0	0	0	0
Shares granted to Directors	$ 1	499	0	0	500	0	500
Shares granted to directors	9,105
Exercise of stock options	$ 1	268	0	0	269	0	$ 269
Stock options exercised							15,334
Net income	0	0	28,455	0	28,455	12,701	$ 41,156
Distributions to partners	0	0	0	0	0	(527)	(527)
Unrealized loss on investment, net	0	0	0	(407)	(407)	0	$ (407)
Employee shares granted							1,098
Restricted stock award							27,778
Contributions from partners	0	0	0	0	0	4,551	$ 4,551
Shares purchased and cancelled	0	(37)	(227)	0	(264)	0	$ (264)
Shares purchased and cancelled							(6,004)
Ending balance, value at Jun. 30, 2021	$ 941	57,360	337,992	268	396,561	31,724	$ 428,285
Common shares outstanding at Jun. 30, 2021	9,411,028
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
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						9,411,028
Beginning balance, value at Mar. 31, 2021	$ 939	56,474	337,910	433	395,756	31,879	$ 427,635
Common shares outstanding at Mar. 31, 2021	9,387,823
Stock option grant compensation	$ 0	18	0	0	18	0	18
Restricted stock compensation	0	134	0	0	134	0	134
Shares granted to Directors	$ 1	499	0	0	500	0	500
Shares granted to directors	9,105
Exercise of stock options	$ 1	235	0	0	236	0	$ 236
Stock options exercised							14,100
Net income	0	0	82	0	82	199	$ 281
Distributions to partners	0	0	0	0	0	(357)	(357)
Unrealized loss on investment, net	0	0	0	(165)	(165)	0	(165)
Contributions from partners	0	0	0	0	0	3	3
Ending balance, value at Jun. 30, 2021	$ 941	57,360	337,992	268	396,561	31,724	428,285
Common shares outstanding at Jun. 30, 2021	9,411,028
Beginning 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						9,411,028
Stock option grant compensation	$ 0	34	0	0	34	0	$ 34
Restricted stock compensation	0	292	0	0	292	0	292
Shares granted to Employees	0	50	0	0	50	0	50
Restricted stock award	2	(2)	0	0	0	0	0
Shares granted to Directors	$ 1	649	0	0	650	0	650
Shares granted to directors	11,232
Forfeiture	$ 0	0	0	0	0	0	0
Exercise of stock options	1	232	0	0	233	0	$ 233
Stock options exercised							11,870
Net income	0	0	1,329	0	1,329	(343)	$ 986
Distributions to partners	0	0	0	0	0	(1,349)	(1,349)
Unrealized loss on investment, net	0	0	0	(1,209)	(1,209)	0	$ (1,209)
Employee shares granted							865
Restricted stock award							21,464
Restricted stock forfeited							(1,363)
Ending balance, value at Jun. 30, 2022	$ 945	58,872	339,081	(1,096)	397,802	27,135	$ 424,937
Common shares outstanding at Jun. 30, 2022	9,455,096						9,455,096
Beginning balance, value at Mar. 31, 2022	$ 943	57,812	338,424	(737)	396,442	27,788	$ 424,230
Common shares outstanding at Mar. 31, 2022	9,431,994
Stock option grant compensation	$ 0	17	0	0	17	0	17
Restricted stock compensation	0	162	0	0	162	0	162
Shares granted to Directors	$ 1	649	0	0	650	0	650
Shares granted to directors	11,232
Exercise of stock options	$ 1	232	0	0	233	0	$ 233
Stock options exercised							11,870
Net income	0	0	657	0	657	(75)	$ 582
Distributions to partners	0	0	0	0	0	(578)	(578)
Unrealized loss on investment, net	0	0	0	(359)	(359)	0	(359)
Ending balance, value at Jun. 30, 2022	$ 945	$ 58,872	$ 339,081	$ (1,096)	$ 397,802	$ 27,135	$ 424,937
Common shares outstanding at Jun. 30, 2022	9,455,096						9,455,096