CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 2,131	$ 2,287
Cost of revenues	1,213	1,369
Gross profit	918	918
Operating expenses
Depreciation and amortization expense	51	34
Research and development	360	262
Selling, general and administrative	857	807
Total operating expenses	1,268	1,103
Operating loss	(350)	(185)
Other expense
Interest expense	261	58
Other expense	11	50
Total other expense	272	108
Loss before income taxes	(622)	(293)
Income tax benefit	0	(38)
Net income (loss)	(622)	(255)
Preferred dividend	(23)	(23)
Net loss to common stockholders	(645)	(278)
Condensed consolidated statements of comprehensive (loss)
Net loss	(622)	(255)
Other comprehensive income (loss)
Foreign currency translation adjustments	191	(247)
Comprehensive loss	(431)	(502)
Loss per share
Net loss to common stockholders	$ (645)	$ (278)
Basic and diluted loss per share	$ (0.03)	$ (0.01)
Weighted average basic and diluted shares outstanding	21,055,990	19,546,116