Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Net revenues	$ 78,563	$ 66,801
Cost of revenues	39,162	32,111
Gross margin	39,401	34,690
Operating expenses:
Selling expense	9,611	8,108
Engineering and product development expense	4,908	4,301
General and administrative expense	12,801	11,694
Adjustment to contingent consideration liability	6,901	6,976
Total operating expenses	34,221	31,079
Operating income	5,180	3,611
Other income (expense)	(137)	227
Earnings before income tax expense	5,043	3,838
Income tax expense	2,006	2,863
Net earnings	$ 3,037	$ 975
Net earnings per common share – basic (in dollars per share)	$ 0.29	$ 0.09
Weighted average common shares outstanding – basic (in shares)	10,347,947	10,284,572
Net earnings per common share – diluted (in dollars per share)	$ 0.29	$ 0.09
Weighted average common shares and common share equivalents outstanding – diluted (in shares)	10,382,194	10,339,313