Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net sales	$ 1,817	$ 3,746
Cost of sales	2,829	2,445
Gross (loss) profit	(1,012)	1,301
Selling, general and administrative expenses	1,337	1,692
Research and development expense	194	215
Provision (recovery) for bad debt expense	304	(61)
Operating loss	(2,847)	(545)
Interest expense, net	(1)	(1)
Other (expense) income, net	(25)	1,020
Foreign currency transaction loss	(71)	(56)
(Loss) earnings from operations before income tax (benefit) expense	(2,944)	418
Income tax (benefit) expense from operations	(88)	99
Net (loss) earnings from operations	(2,856)	319
Other comprehensive (loss) earnings:
Foreign currency translation (net of tax effect of $(32) and $45, respectively)	(119)	454
Other (loss) earnings comprehensive	(119)	454
Comprehensive (loss) earnings	$ (2,975)	$ 773
Net (loss) earnings per share (Note 3):
Basic from operations (in dollars per share)	$ (0.14)	$ 0.02
Basic (in dollars per share)	(0.14)	0.02
Diluted from operations (in dollars per share)	(0.14)	0.02
Diluted (in dollars per share)	$ (0.14)	$ 0.02
Weighted–average shares outstanding (Note 3):
Basic (in shares)	20,152,029	19,571,947
Diluted (in shares)	20,152,029	19,709,356