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, 2019	24,592
Balance at Dec. 31, 2019	$ 254	$ 139,560	$ (110,325)	$ (1,778)	$ 76	$ (1,612)	$ 26,175
Net income (loss)	0	0	(2,567)	0	0	0	(2,567)
Foreign currency translation adjustments	0	0	0	(231)	0	0	(231)
Stock compensation expense	$ 0	81	0	0	0	0	81
Common shares issued upon vesting of restricted stock units (in shares)	55
Common shares issued upon vesting of restricted stock units	$ 0	0	0	0	0	0	0
Treasury shares withheld (in shares)	(11)
Treasury shares withheld	$ 0	0	0	0	0	(5)	(5)
Balance (in shares) at Mar. 31, 2020	24,636
Balance at Mar. 31, 2020	$ 254	139,641	(112,892)	(2,009)	76	(1,617)	23,453
Balance (in shares) at Dec. 31, 2019	24,592
Balance at Dec. 31, 2019	$ 254	139,560	(110,325)	(1,778)	76	(1,612)	26,175
Net income (loss)							(5,111)
Foreign currency translation adjustments							(79)
Balance (in shares) at Jun. 30, 2020	24,701
Balance at Jun. 30, 2020	$ 255	139,710	(115,436)	(1,857)	76	(1,618)	21,130
Balance (in shares) at Mar. 31, 2020	24,636
Balance at Mar. 31, 2020	$ 254	139,641	(112,892)	(2,009)	76	(1,617)	23,453
Net income (loss)	0	0	(2,544)	0	0	0	(2,544)
Foreign currency translation adjustments	0	0	0	152	0	0	152
Stock compensation expense	$ 0	69	0	0	0	0	69
Common shares issued upon vesting of restricted stock units (in shares)	66
Common shares issued upon vesting of restricted stock units	$ 1	0	0	0	0	(1)	0
Treasury shares withheld (in shares)	(1)
Treasury shares withheld	$ 0	0	0	0	0	0	0
Balance (in shares) at Jun. 30, 2020	24,701
Balance at Jun. 30, 2020	$ 255	139,710	(115,436)	(1,857)	76	(1,618)	21,130
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 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
Treasury shares withheld (in shares)	(15)
Treasury shares withheld	$ 0	0	0	0	0	(52)	(52)
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
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