CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue	$ 45,380	$ 46,362	$ 134,309	$ 154,594
Costs of sales:
Cost of sales	36,143	37,824	106,735	122,849
Gross margin	9,237	8,538	27,574	31,745
Operating expenses:
Selling, general and administrative	9,539	7,967	27,162	25,587
Research and development	3,448	2,992	9,233	9,082
Amortization of identifiable intangible assets	241	241	724	724
Operating expenses	13,228	11,200	37,119	35,393
Operating loss	(3,991)	(2,662)	(9,545)	(3,648)
Other (expense), net	(401)	455	(1,205)	120
Interest expense, net	(1,588)	(142)	(2,978)	(261)
Loss before benefit from (provision for) income taxes	(5,980)	(2,349)	(13,728)	(3,789)
Benefit from (provision for) income taxes	78	(14,355)	3,988	(14,170)
Net loss	$ (5,902)	$ (16,704)	$ (9,740)	$ (17,959)
Basic Earnings per Share:
Net loss (in dollars per share)	$ (0.36)	$ (1.04)	$ (0.61)	$ (1.12)
Diluted Earnings per Share:
Net loss (in dollars per share)	$ (0.36)	$ (1.04)	$ (0.61)	$ (1.12)
Weighted average shares outstanding
Basic (in shares)	16,300	16,071	16,086	16,033
Diluted (in shares)	16,300	16,071	16,086	16,033
Product
Revenue	$ 15,904	$ 15,451	$ 46,149	$ 62,658
Costs of sales:
Cost of sales	12,259	12,065	34,912	46,844
Service
Revenue	13,937	13,475	41,514	40,615
Costs of sales:
Cost of sales	9,241	10,248	29,144	30,000
Contract
Revenue	15,539	17,436	46,646	51,321
Costs of sales:
Cost of sales	$ 14,643	$ 15,511	$ 42,679	$ 46,005