CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 157,215	$ 148,984
Marketable securities	57,613	54,346
Accounts receivable	60	529
Prepaids and other current assets	9,038	10,529
Deferred taxes	788	788
Total current assets	224,714	215,176
Intangible assets, net	145,930	153,173
Goodwill	124,969	124,969
Property, plant and equipment, net	78,218	86,905
Deferred taxes, long-term	4,806	4,458
Other assets	3,029	3,131
Total assets	581,666	587,812
Current liabilities:
Accounts payable	4,036	7,918
Accrued salaries and benefits	31,925	23,992
Accrued litigation expenses	10,256	9,822
Other accrued liabilities	7,954	12,402
Total current liabilities	54,171	54,134
Convertible notes, long-term	151,487	147,556
Long-term imputed financing obligation	39,685	45,919
Long-term income taxes payable	6,534	6,533
Other long-term liabilities	13,992	12,076
Total liabilities	265,869	266,218
Commitments and contingencies (Notes 9 and 14)
Stockholders' equity:
Convertible preferred stock, $.001 par value: Authorized: 5,000,000 shares Issued and outstanding: no shares at March 31, 2013 and December 31, 2012	0	0
Common stock, $.001 par value: Authorized: 500,000,000 shares Issued and outstanding: 111,641,153 shares at March 31, 2013 and 111,525,021 shares at December 31, 2012	112	112
Additional paid-in capital	1,080,380	1,075,761
Accumulated deficit	(764,381)	(753,979)
Accumulated other comprehensive loss	(314)	(300)
Total stockholders' equity	315,797	321,594
Total liabilities and stockholders' equity	$ 581,666	$ 587,812