Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock Outstanding [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Nil Coupon Perpetual Loan Notes [Member]	Treasury Stock [Member]	Total
Beginning balance (in shares) at Dec. 31, 2020	25,229
Beginning balance at Dec. 31, 2020	$ 262	$ 140,138	$ (114,603)	$ (1,370)	$ 76	$ (2,182)	$ 22,321
Net (loss) income	0	0	398	0	0	0	398
Foreign currency translation adjustments	0	0	0	(193)	0	0	(193)
Stock compensation expense	$ 0	20	0	0	0	0	20
Common stock issued in connection with private placement, net (in shares)	5,000
Common stock issued in connection with private placement, net	$ 50	23,979	0	0	0	0	24,029
Common shares issued upon vesting of restricted stock units (in shares)	50
Common shares issued upon vesting of restricted stock units	$ 0	0	0	0	0	0	0
Taxes paid on behalf of equity award participants (in shares)	(15)
Taxes paid on behalf of equity award participants	$ 0	0	0	0	0	(52)	(52)
Net (loss) income	$ 0	0	398	0	0	0	398
Ending balance (in shares) at Mar. 31, 2021	30,264
Ending balance at Mar. 31, 2021	$ 312	164,137	(114,205)	(1,563)	76	(2,234)	46,523
Beginning balance (in shares) at Dec. 31, 2021	30,264
Beginning balance at Dec. 31, 2021	$ 312	164,199	(114,549)	(1,604)	76	(2,234)	46,200
Net (loss) income	0	0	(998)	0	0	0	(998)
Foreign currency translation adjustments	0	0	0	(70)	0	0	(70)
Stock compensation expense	$ 0	18	0	0	0	0	18
Common shares issued upon vesting of restricted stock units (in shares)	45
Common shares issued upon vesting of restricted stock units	$ 1	(1)	0	0	0	0	0
Taxes paid on behalf of equity award participants (in shares)	(13)
Taxes paid on behalf of equity award participants	$ 0	0	0	0	0	(17)	(17)
Net (loss) income	$ 0	0	(998)	0	0	0	(998)
Ending balance (in shares) at Mar. 31, 2022	30,296
Ending balance at Mar. 31, 2022	$ 313	$ 164,216	$ (115,547)	$ (1,674)	$ 76	$ (2,251)	$ 45,133