Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Including Additional Paid in Capital [Member]	Treasury Stock, Common [Member]	Key Executive Deferred Compensation [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance at December 31, 2022	$ 139,500	$ (5,927)	$ 5,927	$ 45	$ 8,224	$ 147,769
Balance (in shares)	27,484	(822)
Balance (in shares) at Jun. 30, 2022	27,484	(822)
Balance at Jun. 30, 2022	$ 139,500	$ (5,927)	5,927	45	8,224	147,769
Net Income	0	0	0	0	6,261	6,261
Other comprehensive gain (loss)	$ 0	$ 0	0	7	0	7
Board stock compensation (in shares)	12	0
Board stock compensation	$ 75	$ 0	0	0	0	75
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	201	0
Restricted stock units issued, net of shares withheld for tax withholdings	$ (66)	$ 0	0	0	0	(66)
Shares issued for deferred compensation (in shares)	80	0
Shares issued for deferred compensation	$ 539	$ 0	0	0	0	539
Activity of treasury shares, net (in shares)	0	77
Activity of treasury shares, net	$ 0	$ 512	0	0	0	512
Deferred stock compensation	0	0	512	0	0	512
Stock-based compensation expense	$ 551	$ 0	0	0	0
Stock options exercised, net (in shares)	0	0
Stock options exercised, net	$ 0	$ 0	0	0	0	0
Dividends	$ 0	$ 0	0	0	(1,408)	(1,408)
Balance (in shares) at Sep. 30, 2022	27,777	(899)
Balance at Sep. 30, 2022	$ 140,599	$ (6,439)	6,439	52	13,077	153,728
Balance (in shares) at Jun. 30, 2022	27,484	(822)
Balance at Jun. 30, 2022	$ 139,500	$ (5,927)	5,927	45	8,224	147,769
Net Income						12,678
Balance (in shares) at Dec. 31, 2022	28,120	(957)
Balance at Dec. 31, 2022	$ 142,988	$ (6,988)	6,988	120	18,208	161,316
Balance at December 31, 2022	$ 140,599	$ (6,439)	6,439	52	13,077	153,728
Balance (in shares)	27,777	(899)
Balance (in shares) at Sep. 30, 2022	27,777	(899)
Balance at Sep. 30, 2022	$ 140,599	$ (6,439)	6,439	52	13,077	153,728
Net Income					6,417	6,417
Other comprehensive gain (loss)				68		68
Board stock compensation (in shares)	23
Board stock compensation	$ 98					98
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	71
Restricted stock units issued, net of shares withheld for tax withholdings	$ (399)					(399)
Shares issued for deferred compensation (in shares)	57
Shares issued for deferred compensation	$ 548					548
Activity of treasury shares, net (in shares)		(58)
Activity of treasury shares, net		$ (549)				(549)
Deferred stock compensation			549			549
Stock-based compensation expense	$ 864					864
Stock options exercised, net (in shares)	192
Stock options exercised, net	$ 1,278					1,278
Dividends					(1,286)	(1,286)
Balance (in shares) at Dec. 31, 2022	28,120	(957)
Balance at Dec. 31, 2022	$ 142,988	$ (6,988)	6,988	120	18,208	161,316
Balance at December 31, 2022	$ 142,988	$ (6,988)	6,988	120	18,208	161,316
Balance (in shares)	28,120	(957)
Balance at December 31, 2022	$ 148,691	$ (7,166)	7,166	339	28,548	177,578
Balance (in shares)	28,488	(922)
Balance (in shares) at Jun. 30, 2023	28,488	(922)
Balance at Jun. 30, 2023	$ 148,691	$ (7,166)	7,166	339	28,548	177,578
Net Income	0	0	0	0	8,028	8,028
Other comprehensive gain (loss)	$ 0	$ 0	0	(56)	0	(56)
Board stock compensation (in shares)	9	0
Board stock compensation	$ 113	$ 0	0	0	0	113
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	276	0
Restricted stock units issued, net of shares withheld for tax withholdings	$ 0	$ 0	0	0	0	0
Shares issued for deferred compensation (in shares)	32	0
Shares issued for deferred compensation	$ 437	$ 0	0	0	0	437
Activity of treasury shares, net (in shares)	0	(30)
Activity of treasury shares, net	$ 0	$ (417)	0	0	0	(417)
Deferred stock compensation	0	0	417	0	0	417
Stock-based compensation expense	$ 1,220	$ 0	0	0	0
Stock options exercised, net (in shares)	70	0
Stock options exercised, net	$ 549	$ 0	0	0	0	549
Dividends	$ 0	$ 0	0	0	(1,380)	(1,380)
ESPP Stock Awards (in shares)	3	0
ESPP Stock Awards	$ 57	$ 0	0	0	0	57
Balance (in shares) at Sep. 30, 2023	28,878	(952)
Balance at Sep. 30, 2023	$ 151,067	$ (7,583)	7,583	283	35,196	186,546
Balance (in shares) at Jun. 30, 2023	28,488	(922)
Balance at Jun. 30, 2023	$ 148,691	$ (7,166)	7,166	339	28,548	177,578
Net Income						13,934
Balance (in shares) at Dec. 31, 2023	29,060	(988)
Balance at Dec. 31, 2023	$ 152,924	$ (8,088)	8,088	354	39,656	192,934
Balance at December 31, 2022	$ 151,067	$ (7,583)	7,583	283	35,196	186,546
Balance (in shares)	28,878	(952)
Balance (in shares) at Sep. 30, 2023	28,878	(952)
Balance at Sep. 30, 2023	$ 151,067	$ (7,583)	7,583	283	35,196	186,546
Net Income					5,906	5,906
Other comprehensive gain (loss)				71		71
Board stock compensation (in shares)	7
Board stock compensation	$ 112					112
Restricted stock units issued, net of shares withheld for tax withholdings (in shares)	28
Restricted stock units issued, net of shares withheld for tax withholdings	$ (244)					(244)
Shares issued for deferred compensation (in shares)	36
Shares issued for deferred compensation	$ 506					506
Activity of treasury shares, net (in shares)		(36)
Activity of treasury shares, net		$ (505)				(505)
Deferred stock compensation			505			505
Stock-based compensation expense	$ 814					814
Stock options exercised, net (in shares)	107
Stock options exercised, net	$ 628					628
Dividends					(1,446)	(1,446)
ESPP Stock Awards (in shares)	4
ESPP Stock Awards	$ 41					41
Balance (in shares) at Dec. 31, 2023	29,060	(988)
Balance at Dec. 31, 2023	$ 152,924	$ (8,088)	8,088	354	39,656	192,934
Balance at December 31, 2022	$ 152,924	$ (8,088)	$ 8,088	$ 354	$ 39,656	$ 192,934
Balance (in shares)	29,060	(988)