CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net revenues:
Product	$ 32,682	$ 21,444	$ 69,888	$ 43,528
Service	15,034	11,804	29,377	23,508
Contract	14,545	19,410	28,861	40,927
Revenue, net	62,261	52,658	128,126	107,963
Costs of sales:
Product	24,389	16,137	51,961	32,579
Service	9,766	8,219	19,651	16,818
Contract	12,909	17,857	25,656	37,512
Cost of goods and services sold	47,064	42,213	97,268	86,909
Gross margin	15,197	10,445	30,858	21,054
Operating expenses:
Selling, general and administrative	8,917	7,058	18,527	14,600
Research and development	3,284	2,793	6,853	5,555
Amortization of identifiable intangible assets	242	242	483	483
Operating expenses	12,443	10,093	25,863	20,638
Operating income from continuing operations	2,754	352	4,995	416
Other income (expense), net	54	(210)	(194)	(280)
Interest (expense) income, net	(13)	3	(45)	32
Income from continuing operations before provision for income taxes	2,795	145	4,756	168
Provision for income taxes	(818)	(45)	(1,515)	(53)
Net income from continuing operations	1,977	100	3,241	115
Discontinued operation
(Loss on) income from discontinued operations (net of tax)	0	(26)	183	(26)
Net income	$ 1,977	$ 74	$ 3,424	$ 89
Basic Earnings per Share:
Income from continuing operations (in dollars per share)	$ 0.12	$ 0.01	$ 0.20	$ 0.01
(Loss on) income from discontinued operations, net of tax	0	0	0.01	0
Net income (in dollars per share)	0.12	0.01	0.21	0.01
Diluted Earnings per Share:
Income from continuing operations (in dollars per share)	0.12	0.01	0.20	0.01
(Loss on) income from discontinued operations, net of tax	0	0	0.01	0
Net income (in dollars per share)	$ 0.12	$ 0.01	$ 0.21	$ 0.01
Weighted average shares outstanding
Basic (in shares)	15,919	15,615	15,893	15,651
Diluted (in shares)	16,179	15,670	16,146	15,717