CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUE:
Product sales	$ 75,880	$ 74,170	$ 149,576	$ 145,728
Services and other	9,552	5,294	18,827	11,681
Total revenue	85,432	79,464	168,403	157,409
COSTS AND EXPENSES:
Cost of product sales	30,560	33,587	60,071	68,021
Cost of services and other	6,028	3,706	12,932	7,213
Research and development	12,882	11,959	24,517	24,207
Selling, general and administrative	36,266	33,518	74,828	68,638
Litigation settlement	0	0	5,100	0
Restructuring charges	0	(355)	0	4,487
Total costs and expenses	85,736	82,415	177,448	172,566
Loss from operations	(304)	(2,951)	(9,045)	(15,157)
Interest income and other, net	1,418	89	1,711	432
Interest expense	1,623	2,724	3,377	5,622
Loss before income taxes	(509)	(5,586)	(10,711)	(20,347)
Income tax provision	402	521	674	1,196
Net loss	$ (911)	$ (6,107)	$ (11,385)	$ (21,543)
Basic and diluted net loss per common share (in dollars per share)	$ (0.01)	$ (0.09)	$ (0.16)	$ (0.30)
Shares used in computing basic and diluted net loss per common share	72,944	71,154	72,722	71,038