CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues	$ 9,684	$ 9,700	$ 19,893	$ 16,367
Cost of revenues	5,075	4,491	9,968	8,420
Gross profit	4,609	5,209	9,925	7,947
Operating Expenses:
General & administrative	1,334	1,186	2,809	2,438
Marketing & selling	1,244	1,302	2,487	2,430
Research & development	321	350	651	710
Total Operating Expenses	2,899	2,838	5,947	5,578
Operating income	1,710	2,371	3,978	2,369
Interest expense, net	(12)	(35)	(34)	(70)
Net income before provision for income taxes	1,698	2,336	3,944	2,299
Provision for income taxes	791	702	1,537	689
Net income	$ 907	$ 1,634	$ 2,407	$ 1,610
Earnings per common share (basic) (in dollars per share)	$ 0.17	$ 0.3	$ 0.44	$ 0.30
Earnings per common share (diluted) (in dollars per share)	0.16	0.3	0.44	0.30
Dividends declared per share (in dollars per share)	$ 0.15	$ 0.15	$ 0.30	$ 0.30
Other comprehensive loss:
Foreign currency translation (gross)	$ (71)	$ 0	$ (71)	$ 0
Total comprehensive income	$ 836	$ 1,634	$ 2,336	$ 1,610