Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net revenues	$ 18,062	$ 18,871
Cost of revenues	9,226	9,476
Gross margin	8,836	9,395
Operating expenses:
Selling expense	2,374	2,476
Engineering and product development expense	1,284	1,296
General and administrative expense	3,737	2,990
Adjustment to contingent consideration liability		1,726
Total operating expenses	7,395	8,488
Operating income	1,441	907
Other income	21	75
Earnings before income tax expense	1,462	982
Income tax expense	324	601
Net earnings	$ 1,138	$ 381
Net earnings per common share - basic (in dollars per share)	$ 0.11	$ 0.04
Weighted average common shares outstanding - basic (in shares)	10,385,017	10,326,309
Net earnings per common share - diluted (in dollars per share)	$ 0.11	$ 0.04
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	10,414,330	10,365,306