Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues	$ 9,289	$ 10,787	$ 19,111	$ 21,722
Cost of revenues	5,120	5,615	10,534	11,195
Gross profit	4,169	5,172	8,577	10,527
Operating Expenses:
General & administrative	1,355	1,457	3,270	3,308
Marketing & selling	1,088	1,301	2,217	2,540
Research & development	400	358	820	717
Total Operating Expenses	2,843	3,116	6,307	6,565
Operating income	1,326	2,056	2,270	3,962
Other income, net	22	24	48	56
Net income before provision for income taxes	1,348	2,080	2,318	4,018
Provision for income taxes	580	903	923	1,590
Net income	768	1,177	1,395	2,428
Other Comprehensive Income (Loss):
Foreign currency translation	82	(1,154)	34	(1,165)
Total Comprehensive Income	$ 850	$ 23	$ 1,429	$ 1,263
Basic net income per share (in dollars per share)	$ 0.14	$ 0.21	$ 0.25	$ 0.44
Diluted net income per share (in dollars per share)	0.14	0.21	0.25	0.44
Dividends declared per share (in dollars per share)	$ 0.18	$ 0.18	$ 0.36	$ 0.36
Weighted average common shares outstanding, basic (in shares)	5,514	5,502	5,510	5,497
Weighted average common shares outstanding, diluted (in shares)	5,523	5,554	5,535	5,552