CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net revenues:
Products	$ 76,150	$ 87,315	$ 156,179	$ 181,885
Services	33,617	37,329	73,174	77,741
Total net revenues	109,767	124,644	229,353	259,626
Cost of revenues:
Products	28,363	35,097	60,160	70,091
Services	14,943	15,323	30,638	30,994
Amortization of intangible assets	163	0	163	50
Total cost of revenues	43,469	50,420	90,961	101,135
Gross profit	66,298	74,224	138,392	158,491
Operating expenses:
Research and development	23,310	22,070	46,483	45,024
Marketing and selling	32,811	34,297	60,856	67,112
General and administrative	17,425	19,984	36,812	38,315
Amortization of intangible assets	408	398	782	878
Restructuring costs (recoveries), net	539	(165)	539	(165)
Total operating expenses	74,493	76,584	145,472	151,164
Operating (loss) income	(8,195)	(2,360)	(7,080)	7,327
Interest income	5	50	39	70
Interest expense	(920)	(415)	(1,292)	(788)
Other (expense) income, net	(524)	8	(909)	10
(Loss) income before income taxes	(9,634)	(2,717)	(9,242)	6,619
Provision for income taxes, net	(5,550)	622	(4,989)	1,062
Net (loss) income	$ (4,084)	$ (3,339)	$ (4,253)	$ 5,557
Net (loss) income per common share – basic and diluted	$ (0.10)	$ (0.09)	$ (0.11)	$ 0.14
Weighted-average common shares outstanding – basic	39,635	39,119	39,512	39,109
Weighted-average common shares outstanding – diluted	39,635	39,119	39,512	39,138