Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 11,626	$ 17,755
Short-term investments	351,280	298,177
Accounts receivable	8,460	25,102
Inventory	9,797	7,266
Other current assets	7,932	5,679
Total current assets	389,095	353,979
Long-term investments	118,941	0
Property and equipment, net	85,381	89,773
Goodwill	76,501	76,501
Other assets	936	972
Total assets	670,854	521,225
Current liabilities:
Accounts payable	3,243	7,194
Accrued compensation	9,435	9,252
Accrued expenses	8,129	8,540
Accrued clinical trial expenses	13,832	12,144
Deferred revenue, current portion	19,867	20,584
Other current liabilities	6,768	6,394
Total current liabilities	61,274	64,108
Convertible subordinated notes	214,955	214,955
Capital lease obligations, less current portion	15,863	17,014
Deferred revenue, less current portion	117,931	124,763
Deferred gain	3,715	4,152
Other long-term liabilities	5,840	5,571
Total liabilities	419,578	430,563
Commitments and contingencies
Stockholders' equity:
Preferred stock, 10,000 shares authorized Series A, $0.0001 par value; 3,100 shares designated; no shares issued or outstanding at June 30, 2011 and December 31, 2010	0	0
Common stock, $0.0001 par value; 300,000 authorized; 114,305 shares and 94,517 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	11	9
Capital in excess of par value	1,587,461	1,354,232
Accumulated other comprehensive income	766	968
Accumulated deficit	(1,336,962)	(1,264,547)
Total stockholders' equity	251,276	90,662
Total liabilities and stockholders' equity	$ 670,854	$ 521,225