Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Products	$ 12,241	$ 13,110	$ 36,442	$ 37,384
Services	2,496	2,745	7,338	7,983
Consulting	755	794	2,121	2,170
Total revenue	15,492	16,649	45,901	47,537
Cost of revenue:
Products	5,707	5,648	16,490	16,318
Services	1,010	992	3,074	3,133
Consulting	457	447	1,515	1,412
Total cost of revenue	7,174	7,087	21,079	20,863
Gross profit	8,318	9,562	24,822	26,674
Selling, general and administrative expenses	5,808	6,125	17,914	18,216
Research and development expenses	886	950	3,081	3,064
Operating income	1,624	2,487	3,827	5,394
Other income (expense), net	(48)	(117)	90	(267)
Income before income taxes	1,576	2,370	3,917	5,127
Income tax expense	424	696	1,211	1,558
Net income	$ 1,152	$ 1,674	$ 2,706	$ 3,569
Basic (in dollars per share)	$ 0.20	$ 0.30	$ 0.47	$ 0.63
Diluted (in dollars per share)	$ 0.20	$ 0.29	$ 0.46	$ 0.62
Basic (in shares)	5,753	5,668	5,748	5,655
Diluted (in shares)	5,808	5,776	5,826	5,768
Cash dividends declared per common share (in dollars per share)	$ 0.11	$ 0.11	$ 0.33	$ 0.33