Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Consolidated net loss	$ (29,868)	$ (29,629)
Adjustments to reconcile consolidated net loss to net cash used in operating activities:
Depreciation	1,125	1,307
Impairment of fixed assets	0	769
Increase in fair value of Symphony Icon, Inc. purchase liability	2,081	1,058
Stock-based compensation	1,718	1,472
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	164	(87)
Increase in prepaid expenses and other current assets	(1,395)	(565)
Decrease in other assets	24	315
Increase (decrease) in accounts payable and other liabilities	(851)	3,849
Decrease in deferred revenue	0	(29)
Net cash used in operating activities	(27,002)	(21,540)
Cash flows from investing activities:
Purchases of property and equipment	(234)	(507)
Proceeds from disposal of property and equipment	0	43
Purchases of investments	(151,776)	(33,895)
Maturities of investments	22,435	29,041
Net cash used in investing activities	(129,575)	(5,318)
Cash flows from financing activities:
Proceeds from issuance of common stock	52	160
Repurchase of common stock	(285)	(108)
Repayment of debt borrowings	(353)	(284)
Other financing activities	(136)	0
Net cash used in financing activities	(722)	(232)
Net decrease in cash and cash equivalents	(157,299)	(27,090)
Cash and cash equivalents at beginning of period	186,309	47,208
Cash and cash equivalents at end of period	29,010	20,118
Supplemental disclosure of cash flow information:
Cash paid for interest	516	584
Supplemental disclosure of non-cash investing and financing activities:
Unrealized gain (loss) on investments	$ (78)	$ 35