Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Net revenues	$ 66,801	$ 40,227
Cost of revenues	32,111	19,849
Gross margin	34,690	20,378
Operating expenses:
Selling expense	8,108	5,567
Engineering and product development expense	4,301	3,660
General and administrative expense	11,694	7,005
Adjustment to contingent consideration liability	6,976
Total operating expenses	31,079	16,232
Operating income	3,611	4,146
Other income	227	61
Earnings before income tax expense	3,838	4,207
Income tax expense	2,863	1,549
Net earnings	$ 975	$ 2,658
Net earnings per common share - basic (in dollars per share)	$ 0.09	$ 0.26
Weighted average common shares outstanding - basic (in shares)	10,284,572	10,313,747
Net earnings per common share - diluted (in dollars per share)	$ 0.09	$ 0.26
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	10,339,313	10,332,920