CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net revenues:
Products	$ 51,006	$ 84,509
Services	53,101	59,038
Total net revenues	104,107	143,547
Cost of revenues:
Products	24,504	27,124
Services	14,094	14,409
Amortization of intangible assets	1,950	1,950
Total cost of revenues	40,548	43,483
Gross profit	63,559	100,064
Operating expenses:
Research and development	18,888	21,405
Marketing and selling	25,811	31,619
General and administrative	14,431	17,719
Amortization of intangible assets	363	786
Restructuring costs, net	983	2,777
Total operating expenses	60,476	74,306
Operating income	3,083	25,758
Interest expense	(4,846)	(4,183)
Income before income taxes	(1,763)	21,575
(Benefit from) provision for income taxes	152	635
Net income	$ (1,915)	$ 20,940
Net income per common share - basic and diluted	$ (0.05)	$ 0.53
Weighted-average common shares outstanding – basic	40,772	39,566
Weighted-average common shares outstanding – diluted	40,772	39,640