CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net revenues:
Products	$ 105,330	$ 92,969	$ 287,215	$ 291,545
Services	37,099	45,924	114,840	124,764
Total net revenues	142,429	138,893	402,055	416,309
Cost of revenues:
Products	37,807	39,683	107,898	115,600
Services	14,981	16,372	45,975	47,040
Amortization of intangible assets	0	158	50	1,310
Total cost of revenues	52,788	56,213	153,923	163,950
Gross profit	89,641	82,680	248,132	252,359
Operating expenses:
Research and development	22,154	23,239	67,178	70,693
Marketing and selling	31,410	31,512	98,522	99,324
General and administrative	20,644	22,715	58,959	54,443
Amortization of intangible assets	373	660	1,251	1,981
Restructuring costs (recoveries), net	0	688	(165)	2,879
Total operating expenses	74,581	78,814	225,745	229,320
Operating income	15,060	3,866	22,387	23,039
Interest income	1	76	71	271
Interest expense	(458)	(441)	(1,246)	(1,150)
Other income, net	2	2	12	11
Income before income taxes	14,605	3,503	21,224	22,171
Provision for income taxes, net	365	921	1,427	2,147
Net income	$ 14,240	$ 2,582	$ 19,797	$ 20,024
Net income per common share – basic and diluted	$ 0.36	$ 0.07	$ 0.51	$ 0.51
Weighted-average common shares outstanding – basic	39,133	39,075	39,117	39,031
Weighted-average common shares outstanding – diluted	39,201	39,076	39,164	39,066