CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUE:
Product sales	$ 74,170	$ 58,505	$ 145,728	$ 116,996
Services and other	5,294	7,898	11,681	14,654
Total revenue	79,464	66,403	157,409	131,650
COSTS AND EXPENSES:
Cost of product sales	33,587	24,363	68,021	47,928
Cost of services and other	3,706	3,319	7,213	7,098
Research and development	11,959	13,588	24,207	26,919
Selling, general and administrative	33,518	40,526	68,638	68,450
Restructuring charges	(355)	0	4,487	0
Total costs and expenses	82,415	81,796	172,566	150,395
Loss from operations	(2,951)	(15,393)	(15,157)	(18,745)
Interest income and other, net	89	2,276	432	2,302
Interest expense	2,724	218	5,622	1,198
Loss before income taxes	(5,586)	(13,335)	(20,347)	(17,641)
Income tax provision (benefit)	521	(36,984)	1,196	(37,073)
Net (loss) income	$ (6,107)	$ 23,649	$ (21,543)	$ 19,432
Basic net (loss) income per common share (in dollars per share)	$ (0.09)	$ 0.34	$ (0.30)	$ 0.28
Diluted net (loss) income per common share (in dollars per share)	$ (0.09)	$ 0.33	$ (0.30)	$ 0.27
Shares used in computing basic net (loss) income per common share (in shares)	71,154	70,161	71,038	70,069
Shares used in computing diluted net (loss) income per common share (in shares)	71,154	71,918	71,038	72,263