CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Net revenues:
Product	$ 21,686	$ 18,592
Service	14,102	14,250
Contract	23,836	23,699
Revenue, net	59,624	56,541
Costs of sales:
Product	14,841	12,903
Service	9,320	9,553
Contract	22,474	22,072
Cost of goods and services sold	46,635	44,528
Gross margin	12,989	12,013
Operating expenses:
Selling, general and administrative	9,064	9,263
Research and development	4,345	3,864
Amortization of identifiable intangible assets	249	0
Operating expenses	13,658	13,127
Operating loss	(669)	(1,114)
Other expense, net	(229)	(78)
Interest expense	(86)	(17)
Loss before benefit from income taxes	(984)	(1,209)
Benefit for income taxes	599	220
Net loss	$ (385)	$ (989)
Earnings Per Share:
Basic (in dollars per share)	$ (0.02)	$ (0.06)
Diluted (in dollars per share)	$ (0.02)	$ (0.06)
Weighted average shares outstanding
Basic (in shares)	15,596	15,499
Diluted (in shares)	15,596	15,499