CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Net revenues:
Product	$ 115,126	$ 100,271
Service	56,467	49,070
Contract	61,012	80,312
Total net revenues	232,605	229,653
Costs of sales:
Product	85,850	73,976
Service	39,626	35,647
Contract	54,299	73,830
Total costs of sales	179,775	183,453
Gross margin	52,830	46,200
Operating expenses:
Selling, general and administrative	38,171	31,440
Research and development	13,814	11,581
Amortization of identifiable intangible assets	966	966
Total operating expenses	52,951	43,987
Operating (loss) income from continuing operations	(121)	2,213
Other income, net	629	1,316
Interest (expense) income, net	(121)	121
Income from continuing operations before provision for income taxes	387	3,650
Provision for income taxes	(3,997)	(1,147)
(Loss) income from continuing operations	(3,610)	2,503
Discontinued operations
Income (loss) on discontinued operations (net of tax)	224	(720)
Net (loss) income	$ (3,386)	$ 1,783
Basic Earnings per Share:
(Loss) Income from continuing operations (in dollars per share)	$ (0.23)	$ 0.16
Income (Loss) from discontinued operations (in dollars per share)	0.01	(0.05)
Net (loss) income (in dollars per share)	(0.22)	0.11
Diluted Earnings per Share:
(Loss) Income from continuing operations (in dollars per share)	(0.23)	0.16
Income (Loss) from discontinued operations (in dollars per share)	0.01	(0.05)
Net (loss) income (in dollars per share)	$ (0.22)	$ 0.11
Weighted average shares outstanding
Basic (in shares)	15,949	15,675
Diluted (in shares)	15,949	15,738