Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues	$ 37,610	$ 55,146
Cost of Goods Sold, Product	22,175	35,732
Revenue, Product	28,699	47,317
Revenue, Service	8,911	7,829
Cost of sales:
Cost of Goods Sold, Service	5,286	4,703
Amortization of purchased technology	1,927	1,927
Total cost of sales	29,388	42,362
Gross margin	8,222	12,784
Research and development	6,480	5,653
Selling, general and administrative	9,382	7,639
Intangible asset amortization	1,260	1,260
Restructuring and acquisition-related charges, net	235	682
Income (loss) from operations	(9,135)	(2,450)
Interest expense	(272)	(117)
Other income (expense), net	(297)	139
Income (loss) before income tax expense (benefit)	(9,704)	(2,428)
Income tax expense (benefit)	304	537
Net income (loss)	$ (10,008)	$ (2,965)
Net income (loss) per share:
Basic (in dollars per share)	$ (0.26)	$ (0.08)
Diluted (in dollars per share)	$ (0.26)	$ (0.08)
Weighted average shares outstanding:
Basic (in shares)	38,715	37,007
Diluted (in shares)	38,715	37,007