Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 22,550	$ 30,467
Costs and expenses:
Cost of sales	11,912	19,637
Selling, general and administrative	13,600	17,191
Restructuring charge		625
Research and development	1,177	1,127
Intangible assets abandonment and impairment	197	127
Total Costs and Expenses	26,886	38,707
Operating loss from continuing operations	(4,336)	(8,240)
Interest (expense)	(4)
Interest income		41
Foreign exchange gain		370
Other income (loss)	119	(8)
Loss from continuing operations before income taxes	(4,221)	(7,837)
Income tax expense	(57)	(14)
Net loss from continuing operations	(4,278)	(7,851)
Loss from discontinued operations (net of income tax benefit of $0 in 2020 and 2019)		(1)
Net loss	$ (4,278)	$ (7,852)
Net loss per common share:
Continuing operations (in dollars per share)	$ (0.17)	$ (0.32)
Discontinued operations (in dollars per share)		0
Basic net loss per common share (in dollars per share)	(0.17)	(0.32)
Diluted
Continuing operations (in dollars per share)	(0.17)	(0.32)
Discontinued operations (in dollars per share)
Diluted net loss per common share (in dollars per share)	$ (0.17)	$ (0.32)
Weighted-average number of common shares outstanding:
Basic weighted-average shares (in shares)	24,691,000	24,202,000
Diluted (in shares)	24,691,000	24,202,000