Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2019	6,472	(1,310)
Balances at Dec. 31, 2019	$ 65	$ (6,352)	$ 88,471	$ (60,815)	$ 2	$ 21,371
Share based payment expense	0	0	16	0	0	16
Net income (loss) to common shareholders	$ 0	$ 0	0	(4,941)	0	(4,941)
Purchases of treasury stock (in shares)	0	(5)
Purchases of treasury stock	$ 0	$ (19)	0	0	0	(19)
Foreign currency translation	$ 0	$ 0	0	0	79	79
Balances (in shares) at Dec. 31, 2020	6,472	(1,315)
Balances at Dec. 31, 2020	$ 65	$ (6,371)	88,487	(65,756)	81	16,506
Share based payment expense	0	0	61	0	0	61
Net income (loss) to common shareholders	0	0	0	4,518	0	$ 4,518
Purchases of treasury stock (in shares)						0
Foreign currency translation	0	0	0	0	(104)	$ (104)
Short swing profit disgorgement	$ 0	$ 0	32	0	0	32
Balances (in shares) at Dec. 31, 2021	6,472	(1,315)
Balances at Dec. 31, 2021	$ 65	$ (6,371)	$ 88,580	$ (61,238)	$ (23)	$ 21,013