CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUE:
Product sales	$ 74,776	$ 72,685	$ 220,505	$ 189,681
Services and other	5,578	6,939	17,258	21,593
Total revenue	80,354	79,624	237,763	211,274
COSTS AND EXPENSES:
Cost of product sales	32,600	33,979	100,621	81,907
Cost of services and other	3,915	3,959	11,128	11,057
Research and development	11,478	16,498	35,686	43,417
Selling, general and administrative	33,646	36,302	102,286	104,752
Restructuring charges	(2)	0	4,484	0
Total costs and expenses	81,637	90,738	254,205	241,133
Loss from operations	(1,283)	(11,114)	(16,442)	(29,859)
Interest income and other, net	68	(3,933)	501	(1,631)
Interest expense	2,652	2,993	8,274	4,191
Loss before income taxes	(3,867)	(18,040)	(24,215)	(35,681)
Income tax provision (benefit)	289	(181)	1,485	(37,254)
Net (loss) income	$ (4,156)	$ (17,859)	$ (25,700)	$ 1,573
Basic net (loss) income per common share	$ (0.06)	$ (0.25)	$ (0.36)	$ 0.02
Diluted net (loss) income per common share	$ (0.06)	$ (0.25)	$ (0.36)	$ 0.02
Shares used in computing basic net (loss) income per common share	71,600	70,403	71,227	70,181
Shares used in computing diluted net (loss) income per common share	71,600	70,403	71,227	70,610