Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2018	6,175,000		668,000
Balance at Dec. 31, 2018	$ 31	$ 31,523	$ (10,082)	$ (1,326)	$ (1,399)	$ 18,747
Shares issued – vested (in shares)	10,000
Tax withholding related to vested shares from employee stock plans	$ 0	(33)	0	0	0	(33)
Stock compensation expense		759				759
Cash dividends declared	0	0	0	(3,970)	0	(3,970)
Net (loss) income				1,542		1,542
Foreign currency translation, net of taxes	$ 0	0	$ 0	0	(225)	(225)
Balance (in shares) at Dec. 31, 2019	6,185,000		668,000
Balance at Dec. 31, 2019	$ 31	32,249	$ (10,082)	(3,754)	(1,624)	16,820
Shares issued – vested (in shares)	20,000		0
Tax withholding related to vested shares from employee stock plans	$ 0	(9)	$ 0	0	0	(9)
Stock compensation expense	0	563	0	0	0	563
Cash dividends declared	0	0	0	(993)	0	(993)
Net (loss) income	0	0	0	(3,859)	0	(3,859)
Foreign currency translation, net of taxes	$ 0	0	$ 0	0	(10)	(10)
Balance (in shares) at Dec. 31, 2020	6,205,000		668,000
Balance at Dec. 31, 2020	$ 31	32,803	$ (10,082)	(8,606)	(1,634)	12,512
Shares issued – vested (in shares)	51,000		0
Tax withholding related to vested shares from employee stock plans	$ 0	(72)	$ 0	0	0	(72)
Stock compensation expense	0	743	0	0	0	743
Cash dividends declared	0	0	0	(279)	0	(279)
Net (loss) income	$ 0	0	$ 0	(665)	0	(665)
Foreign currency translation, net of taxes						$ 0
Exercise of stock options (in shares)	1		0			1,000
Exercise of stock options	$ 0	4	$ 0	0	0	$ 4
Balance (in shares) at Dec. 31, 2021	6,257,000		668,000
Balance at Dec. 31, 2021	$ 31	$ 33,478	$ (10,082)	$ (9,550)	$ (1,634)	$ 12,243