Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - 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	6	0	0	6
Net income (loss) to common shareholders	$ 0	$ 0	0	(2,660)	0	(2,660)
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	(234)	(234)
Balances (in shares) at Mar. 31, 2020	6,472	(1,315)
Balances at Mar. 31, 2020	$ 65	$ (6,371)	88,477	(63,475)	(232)	18,464
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
Net income (loss) to common shareholders						(5,338)
Foreign currency translation						(119)
Balances (in shares) at Sep. 30, 2020	6,472	(1,315)
Balances at Sep. 30, 2020	$ 65	$ (6,371)	88,484	(66,153)	(117)	15,908
Balances (in shares) at Mar. 31, 2020	6,472	(1,315)
Balances at Mar. 31, 2020	$ 65	$ (6,371)	88,477	(63,475)	(232)	18,464
Share based payment expense	0	0	4	0	0	4
Net income (loss) to common shareholders	$ 0	$ 0	0	(2,700)	0	(2,700)
Purchases of treasury stock (in shares)	0	0
Purchases of treasury stock	$ 0	$ 0	0	0	0	0
Foreign currency translation	$ 0	$ 0	0	0	(5)	(5)
Balances (in shares) at Jun. 30, 2020	6,472	(1,315)
Balances at Jun. 30, 2020	$ 65	$ (6,371)	88,481	(66,175)	(237)	15,763
Share based payment expense	0	0	3	0	0	3
Net income (loss) to common shareholders	0	0	0	22	0	22
Purchases of treasury stock	0	0	0	0	0	0
Foreign currency translation	$ 0	$ 0	0	0	120	120
Balances (in shares) at Sep. 30, 2020	6,472	(1,315)
Balances at Sep. 30, 2020	$ 65	$ (6,371)	88,484	(66,153)	(117)	15,908
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	3	0	0	3
Net income (loss) to common shareholders	0	0	0	2,221	0	2,221
Foreign currency translation	$ 0	$ 0	0	0	(19)	(19)
Balances (in shares) at Mar. 31, 2021	6,472	(1,315)
Balances at Mar. 31, 2021	$ 65	$ (6,371)	88,490	(63,535)	62	18,711
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
Net income (loss) to common shareholders						$ 4,495
Purchases of treasury stock (in shares)						0
Foreign currency translation						$ (120)
Balances (in shares) at Sep. 30, 2021	6,472	(1,315)
Balances at Sep. 30, 2021	$ 65	$ (6,371)	88,525	(61,261)	(39)	20,919
Balances (in shares) at Mar. 31, 2021	6,472	(1,315)
Balances at Mar. 31, 2021	$ 65	$ (6,371)	88,490	(63,535)	62	18,711
Share based payment expense	0	0	1	0	0	1
Net income (loss) to common shareholders	0	0	0	1,121	0	1,121
Foreign currency translation	0	0	0	0	16	16
Short swing profit disgorgement	$ 0	$ 0	32	0	0	32
Balances (in shares) at Jun. 30, 2021	6,472	(1,315)
Balances at Jun. 30, 2021	$ 65	$ (6,371)	88,523	(62,414)	78	19,881
Share based payment expense	0	0	2	0	0	2
Net income (loss) to common shareholders	0	0	0	1,153	0	1,153
Foreign currency translation	$ 0	$ 0	0	0	(117)	(117)
Balances (in shares) at Sep. 30, 2021	6,472	(1,315)
Balances at Sep. 30, 2021	$ 65	$ (6,371)	$ 88,525	$ (61,261)	$ (39)	$ 20,919