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)			(2,567)				(2,567)
Foreign currency translation adjustments				(231)			(231)
Stock compensation expense		81					81
Common shares issued upon vesting of restricted stock units (in shares)	55
Common shares issued upon vesting of restricted stock units
Treasury shares withheld (in shares)	(11)
Treasury shares withheld						(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, 2020	25,229
Balance at Dec. 31, 2020	$ 262	140,138	(114,603)	(1,370)	76	(2,182)	22,321
Net income (loss)			398				398
Foreign currency translation adjustments				(193)			(193)
Stock compensation expense		20					20
Common shares issued upon vesting of restricted stock units (in shares)	50
Common shares issued upon vesting of restricted stock units
Treasury shares withheld (in shares)	(15)
Treasury shares withheld						(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					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