CONDENSED 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
REVENUE:
Product sales	$ 78,069	$ 74,776	$ 227,644	$ 220,505
Services and other	9,017	5,578	27,845	17,258
Total revenue	87,086	80,354	255,489	237,763
COSTS AND EXPENSES:
Cost of product sales	29,140	32,600	89,211	100,621
Cost of services and other	6,426	3,915	19,358	11,128
Research and development	12,926	11,478	37,443	35,686
Selling, general and administrative	33,718	33,646	108,546	102,286
Litigation settlement	0	0	5,100	0
Restructuring charges	0	(2)	0	4,484
Total costs and expenses	82,210	81,637	259,658	254,205
Income (loss) from operations	4,876	(1,283)	(4,169)	(16,442)
Other (expense) income, net	(1,008)	68	703	501
Interest expense	1,595	2,652	4,972	8,274
Income (loss) before income taxes	2,273	(3,867)	(8,438)	(24,215)
Income tax (benefit) provision	(111)	289	563	1,485
Net income (loss)	$ 2,384	$ (4,156)	$ (9,001)	$ (25,700)
Basic net income (loss) per common share	$ 0.03	$ (0.06)	$ (0.12)	$ (0.36)
Diluted net income (loss) per common share	$ 0.03	$ (0.06)	$ (0.12)	$ (0.36)
Shares used in computing basic net income (loss) per common share	73,413	71,600	72,955	71,227
Shares used in computing diluted net income (loss) per common share	76,315	71,600	72,955	71,227