Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenue:
Products	$ 48,302	$ 50,694	$ 44,848
Services	9,956	10,658	9,126
Consulting	2,966	3,123	3,134
Total revenue	61,224	64,475	57,108
Cost of revenue:
Products	21,778	22,174	20,036
Services	4,205	4,188	3,936
Consulting	2,017	1,999	1,867
Total cost of revenue	28,000	28,361	25,839
Gross profit	33,224	36,114	31,269
Selling, general and administrative expenses	23,468	24,988	22,454
Research and development expenses	4,341	$ 4,191	$ 4,032
Realignment expenses	$ 1,049
Impairment of investment in affiliated company		$ 3,171
Operating income	$ 4,366	3,764	$ 4,783
Other income (expense), net	93	(306)	(359)
Income before income taxes	4,459	3,458	4,424
Income taxes	1,487	1,922	963
Net income	$ 2,972	$ 1,536	$ 3,461
Net income per common share:
Basic (in dollars per share)	$ 0.52	$ 0.27	$ 0.62
Diluted (in dollars per share)	$ 0.51	$ 0.27	$ 0.61
Basic (in shares)	5,753	5,665	5,545
Diluted (in shares)	5,818	5,754	5,640
Dividends declared, per share (in dollars per share)	$ 0.44	$ 0.44	$ 0.44