Condensed Statements of Stockholders' Equity (Unaudited) - USD ($) $ 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, Common [Member]	Total
Balance (in shares) at Dec. 31, 2022	30,296,000
Balance at Dec. 31, 2022	$ 313	$ 164,422	$ (115,991)	$ (1,728)	$ 76	$ (2,251)	$ 44,841
Net income (loss)	0	0	(414)	0	0	0	(414)
Foreign currency translation adjustments	0	0	0	86	0	0	86
Stock compensation expense	$ 0	89	0	0	0	0	89
Balance (in shares) at Mar. 31, 2023	30,296,000
Balance at Mar. 31, 2023	$ 313	164,511	(116,405)	(1,642)	76	(2,251)	44,602
Balance (in shares) at Dec. 31, 2022	30,296,000
Balance at Dec. 31, 2022	$ 313	164,422	(115,991)	(1,728)	76	(2,251)	44,841
Net income (loss)							(999)
Foreign currency translation adjustments							(84)
Balance (in shares) at Sep. 30, 2023	30,385,000
Balance at Sep. 30, 2023	$ 313	164,752	(116,990)	(1,812)	76	(2,251)	44,088
Balance (in shares) at Mar. 31, 2023	30,296,000
Balance at Mar. 31, 2023	$ 313	164,511	(116,405)	(1,642)	76	(2,251)	44,602
Net income (loss)	0	0	(1,044)	0	0	0	(1,044)
Foreign currency translation adjustments	0	0	0	(48)	0	0	(48)
Stock compensation expense	$ 0	98	0	0	0	0	98
Exercise of stock options (in shares)	44,000
Exercise of stock options	$ 0	42	0	0	0	0	42
Common shares issued upon vesting of restricted stock units (in shares)	45,000
Common shares issued upon vesting of restricted stock units	$ 0	0	0	0	0	0	0
Balance (in shares) at Jun. 30, 2023	30,385,000
Balance at Jun. 30, 2023	$ 313	164,651	(117,449)	(1,690)	76	(2,251)	43,650
Net income (loss)	0	0	459	0	0	0	459
Foreign currency translation adjustments	0	0	0	(122)	0	0	(122)
Stock compensation expense	$ 0	101	0	0	0	0	101
Balance (in shares) at Sep. 30, 2023	30,385,000
Balance at Sep. 30, 2023	$ 313	164,752	(116,990)	(1,812)	76	(2,251)	44,088
Balance (in shares) at Dec. 31, 2023	30,385,000
Balance at Dec. 31, 2023	$ 313	164,853	(117,529)	(1,748)	76	(2,251)	43,714
Net income (loss)	0	0	281	0	0	0	281
Foreign currency translation adjustments	0	0	0	(143)	0	0	(143)
Stock compensation expense	$ 0	104	0	0	0	0	104
Balance (in shares) at Mar. 31, 2024	30,385,000
Balance at Mar. 31, 2024	$ 313	164,957	(117,248)	(1,891)	76	(2,251)	43,956
Balance (in shares) at Dec. 31, 2023	30,385,000
Balance at Dec. 31, 2023	$ 313	164,853	(117,529)	(1,748)	76	(2,251)	43,714
Net income (loss)							(60)
Foreign currency translation adjustments							$ (32)
Exercise of stock options (in shares)							(0)
Balance (in shares) at Sep. 30, 2024	30,708,000
Balance at Sep. 30, 2024	$ 317	165,186	(117,589)	(1,780)	76	(2,346)	$ 43,864
Balance (in shares) at Mar. 31, 2024	30,385,000
Balance at Mar. 31, 2024	$ 313	164,957	(117,248)	(1,891)	76	(2,251)	43,956
Net income (loss)	0	0	(421)	0	0	0	(421)
Foreign currency translation adjustments	0	0	0	5	0	0	5
Stock compensation expense	$ 0	124	0	0	0	0	124
Common shares issued upon vesting of restricted stock units (in shares)	406,000
Common shares issued upon vesting of restricted stock units	$ 4	(4)	0	0	0	0	0
Taxes paid on behalf of equity award participants (in shares)	(83,000)
Taxes paid on behalf of equity award participants	$ 0	0	0	0	0	(95)	(95)
Balance (in shares) at Jun. 30, 2024	30,708,000
Balance at Jun. 30, 2024	$ 317	165,077	(117,669)	(1,886)	76	(2,346)	43,569
Net income (loss)	0	0	80	0	0	0	80
Foreign currency translation adjustments	0	0	0	106	0	0	106
Stock compensation expense	$ 0	109	0	0	0	0	109
Balance (in shares) at Sep. 30, 2024	30,708,000
Balance at Sep. 30, 2024	$ 317	$ 165,186	$ (117,589)	$ (1,780)	$ 76	$ (2,346)	$ 43,864