CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ (71,801)	$ 115,550
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,593	3,865
Stock-based compensation	5,954	3,781
Deferred executive compensation expense	1,194	1,088
Revaluation of warrant liability	26,629	8,723
Increase (decrease) from:
Other current assets	(398)	617
Amounts due under license agreements	343	1,118
Other assets	(4)	15
Accounts payable	1,601	(1,420)
Accrued compensation and benefits	(326)	(499)
Accrued product development expenses	661	(1,426)
Other accrued expenses	1,675	(742)
Other liabilities		18
Deferred revenue	1,056	(111,599)
Deferred executive compensation paid	(775)	(310)
Net cash provided by (used in) operating activities	(30,598)	18,779
Cash flows from investing activities:
Investment in property and equipment	(1,147)	(980)
Investment in intangible assets	(563)	(517)
Net cash used in investing activities	(1,710)	(1,497)
Cash flows from financing activities:
Proceeds from borrowing of long-term debt	4,375
Repayment of long-term borrowings	(1,050)	(1,400)
Principal payments under capital lease obligation	(51)	(87)
Proceeds from issuance of common stock, pursuant to warrants	8,079	2,624
Proceeds from issuance of common stock pursuant to stock option and purchase plans	4,469	524
Payment of tax withholding obligations related to stock compensation	(827)
Net cash provided by financing activities	14,995	1,661
Net increase (decrease) in cash and cash equivalents	(17,313)	18,943
Cash and cash equivalents, beginning of period	103,630	40,362
Cash and cash equivalents, end of period	86,317	59,305
Supplemental cash flow information
Assets acquired under capital lease		$ 19