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
Balance (in shares) at Dec. 31, 2020	25,229
Balance at Dec. 31, 2020	$ 262	$ 140,138	$ (114,603)	$ (1,370)	$ 76	$ (2,182)	$ 22,321
Net income (loss)	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)
Balance (in shares) at Mar. 31, 2021	30,264
Balance at Mar. 31, 2021	$ 312	164,137	(114,205)	(1,563)	76	(2,234)	46,523
Balance (in shares) at Dec. 31, 2020	25,229
Balance at Dec. 31, 2020	$ 262	140,138	(114,603)	(1,370)	76	(2,182)	22,321
Net income (loss)							(380)
Foreign currency translation adjustments							(60)
Balance (in shares) at Jun. 30, 2021	30,264
Balance at Jun. 30, 2021	$ 312	164,157	(114,983)	(1,430)	76	(2,234)	45,898
Balance (in shares) at Mar. 31, 2021	30,264
Balance at Mar. 31, 2021	$ 312	164,137	(114,205)	(1,563)	76	(2,234)	46,523
Net income (loss)	0	0	(778)	0	0	0	(778)
Foreign currency translation adjustments	0	0	0	133	0	0	133
Stock compensation expense	$ 0	20	0	0	0	0	20
Balance (in shares) at Jun. 30, 2021	30,264
Balance at Jun. 30, 2021	$ 312	164,157	(114,983)	(1,430)	76	(2,234)	45,898
Balance (in shares) at Dec. 31, 2021	30,264
Balance at Dec. 31, 2021	$ 312	164,199	(114,549)	(1,604)	76	(2,234)	46,200
Net income (loss)	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)
Balance (in shares) at Mar. 31, 2022	30,296
Balance at Mar. 31, 2022	$ 313	164,216	(115,547)	(1,674)	76	(2,251)	45,133
Balance (in shares) at Dec. 31, 2021	30,264
Balance at Dec. 31, 2021	$ 312	164,199	(114,549)	(1,604)	76	(2,234)	46,200
Net income (loss)							(1,354)
Foreign currency translation adjustments							(292)
Balance (in shares) at Jun. 30, 2022	30,296
Balance at Jun. 30, 2022	$ 313	164,244	(115,903)	(1,896)	76	(2,251)	44,583
Balance (in shares) at Mar. 31, 2022	30,296
Balance at Mar. 31, 2022	$ 313	164,216	(115,547)	(1,674)	76	(2,251)	45,133
Net income (loss)	0	0	(356)	0	0	0	(356)
Foreign currency translation adjustments	0	0	0	(222)	0	0	(222)
Stock compensation expense	$ 0	28	0	0	0	0	28
Balance (in shares) at Jun. 30, 2022	30,296
Balance at Jun. 30, 2022	$ 313	$ 164,244	$ (115,903)	$ (1,896)	$ 76	$ (2,251)	$ 44,583