CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net revenues:
Net revenues	$ 46,362	$ 48,938	$ 154,594	$ 177,064
Costs of sales:
Cost of sales	37,824	39,710	122,849	138,199
Gross margin	8,538	9,228	31,745	38,865
Operating expenses:
Selling, general and administrative	7,967	9,054	25,587	27,581
Research and development	2,992	2,529	9,082	8,161
Amortization of identifiable intangible assets	241	241	724	724
Operating expenses	11,200	11,824	35,393	36,466
Operating (loss) income from continuing operations	(2,662)	(2,596)	(3,648)	2,399
Other income (expense), net	455	(70)	120	(264)
Interest expense, net	(142)	(39)	(261)	(84)
(Loss) income from continuing operations before benefit from / (provision for) income taxes	(2,349)	(2,705)	(3,789)	2,051
Benefit from / (provision for) income taxes	(14,355)	1,188	(14,170)	(327)
(Loss) income from continuing operations	(16,704)	(1,517)	(17,959)	1,724
Discontinued operations
Income from discontinued operations (net of tax)	0	0	0	183
Net (loss) income	$ (16,704)	$ (1,517)	$ (17,959)	$ 1,907
Basic (Loss) Earnings per Share:
(Loss) Income from continuing operations (in dollars per share)	$ (1.04)	$ (0.10)	$ (1.12)	$ 0.11
Income from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.01
Net (Loss) income per share (in dollars per share)	(1.04)	(0.10)	(1.12)	0.12
Diluted (Loss) Earnings per Share:
(Loss) Income from continuing operations (in dollars per share)	(1.04)	(0.10)	(1.12)	0.11
Income from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.01
Net (loss) income per share (in dollars per share)	$ (1.04)	$ (0.10)	$ (1.12)	$ 0.12
Weighted average shares outstanding
Basic (in shares)	16,071	15,976	16,033	15,949
Diluted (in shares)	16,071	15,976	16,033	16,260
Product [Member]
Net revenues:
Net revenues	$ 15,451	$ 20,706	$ 62,658	$ 90,594
Costs of sales:
Cost of sales	12,065	15,861	46,844	67,822
Service [Member]
Net revenues:
Net revenues	13,475	13,317	40,615	42,694
Costs of sales:
Cost of sales	10,248	10,241	30,000	31,113
Contract [Member]
Net revenues:
Net revenues	17,436	14,915	51,321	43,776
Costs of sales:
Cost of sales	$ 15,511	$ 13,608	$ 46,005	$ 39,264