Consolidated Statement of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net revenues	$ 14,180	$ 8,647
Cost of revenues	6,452	4,580
Gross margin	7,728	4,067
Operating expenses:
Selling expense	1,668	1,335
Engineering and product development expense	935	991
General and administrative expense	1,994	1,645
Total operating expenses	4,597	3,971
Operating income	3,131	96
Other income	41	28
Earnings before income tax expense	3,172	124
Income tax expense	1,094	43
Net earnings	$ 2,078	$ 81
Net earnings per common share - basic (in dollars per share)	$ 0.20	$ 0.01
Weighted average common shares outstanding - basic (in shares)	10,264,565	10,390,002
Net earnings per common share - diluted (in dollars per share)	$ 0.20	$ 0.01
Weighted average common shares and common share equivalents outstanding - diluted (in shares)	10,295,337	10,404,244