Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Balance (in shares) at Dec. 31, 2020	10,562,200
Balance at Dec. 31, 2020	$ 106	$ 26,851	$ 17,110	$ 889	$ (204)	$ 44,752
Net earnings	0	0	2,212	0	0	2,212
Other comprehensive earnings (loss)	0	0	0	(101)	0	(101)
Amortization of deferred compensation related to stock-based awards	$ 0	269	0	0	0	269
Issuance of unvested shares of restricted stock (in shares)	81,468
Issuance of unvested shares of restricted stock	$ 1	(1)	0	0	0	0
Stock options exercised (in shares)	99,740
Stock options exercised	$ 1	716	0	0	0	717
Balance (in shares) at Mar. 31, 2021	10,743,408
Balance at Mar. 31, 2021	$ 108	27,835	19,322	788	(204)	47,849
Balance (in shares) at Dec. 31, 2020	10,562,200
Balance at Dec. 31, 2020	$ 106	26,851	17,110	889	(204)	44,752
Net earnings						4,821
Balance (in shares) at Jun. 30, 2021	10,815,859
Balance at Jun. 30, 2021	$ 108	28,574	21,931	812	(204)	51,221
Balance (in shares) at Mar. 31, 2021	10,743,408
Balance at Mar. 31, 2021	$ 108	27,835	19,322	788	(204)	47,849
Net earnings	0	0	2,609	0	0	2,609
Other comprehensive earnings (loss)	0	0	0	24	0	24
Amortization of deferred compensation related to stock-based awards	$ 0	454	0	0	0	454
Issuance of unvested shares of restricted stock (in shares)	44,741
Issuance of unvested shares of restricted stock	$ 0	0	0	0	0	0
Stock options exercised (in shares)	45,835
Stock options exercised	$ 0	285	0	0	0	285
Forfeiture of unvested shares of restricted stock (in shares)	(18,125)
Forfeiture of unvested shares of restricted stock	$ 0	0	0	0	0	0
Balance (in shares) at Jun. 30, 2021	10,815,859
Balance at Jun. 30, 2021	$ 108	28,574	21,931	812	(204)	51,221
Balance (in shares) at Dec. 31, 2021	10,910,460
Balance at Dec. 31, 2021	$ 109	29,931	24,393	594	(204)	54,823
Net earnings	0	0	577	0	0	577
Other comprehensive earnings (loss)	0	0	0	173	0	173
Amortization of deferred compensation related to stock-based awards	$ 0	372	0	0	0	372
Issuance of unvested shares of restricted stock (in shares)	79,489
Issuance of unvested shares of restricted stock	$ 1	(1)	0	0	0	0
Shares issued under Employee Stock Purchase Plan (in shares)	5,245
Shares issued under Employee Stock Purchase Plan	$ 0	56	0	0	0	56
Balance (in shares) at Mar. 31, 2022	10,995,194
Balance at Mar. 31, 2022	$ 110	30,358	24,970	767	(204)	56,001
Balance (in shares) at Dec. 31, 2021	10,910,460
Balance at Dec. 31, 2021	$ 109	29,931	24,393	594	(204)	54,823
Net earnings						$ 2,693
Stock options exercised (in shares)						(0)
Balance (in shares) at Jun. 30, 2022	11,048,708
Balance at Jun. 30, 2022	$ 110	30,974	27,086	164	(214)	$ 58,120
Balance (in shares) at Mar. 31, 2022	10,995,194
Balance at Mar. 31, 2022	$ 110	30,358	24,970	767	(204)	56,001
Net earnings	0	0	2,116	0	0	2,116
Other comprehensive earnings (loss)	0	0	0	(603)	0	(603)
Amortization of deferred compensation related to stock-based awards	$ 0	551	0	0	0	551
Issuance of unvested shares of restricted stock (in shares)	44,044
Issuance of unvested shares of restricted stock	$ 0	0	0	0	0	0
Shares issued under Employee Stock Purchase Plan (in shares)	9,470
Shares issued under Employee Stock Purchase Plan	$ 0	65	0	0	0	65
Shares redeemed into treasury stock	$ 0	0	0	0	(10)	(10)
Balance (in shares) at Jun. 30, 2022	11,048,708
Balance at Jun. 30, 2022	$ 110	$ 30,974	$ 27,086	$ 164	$ (214)	$ 58,120