Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Total revenues	$ 23,009	$ 21,966
Cost of revenues	15,282	15,389
Gross profit	7,727	6,577
Operating expenses:
Selling, general and administrative	9,587	9,201
Depreciation and amortization	522	529
Research and development	604	620
Provision for bad debt	106	6
Other operating income	(2)
Total operating expenses	10,817	10,356
Loss from operations	(3,090)	(3,779)
Other income (expense), net	219	330
Interest expense	(85)	(114)
Loss before taxes	(2,956)	(3,563)
Income tax expense (benefit)	47	(302)
Net loss	$ (3,003)	$ (3,261)
Basic and diluted weighted average common shares outstanding (in shares)	28,583,600	28,488,032
Basic and diluted loss per common share (in dollars per share)	$ (0.11)	$ (0.11)