Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Consolidated net loss	$ (55,799)	$ (56,267)
Adjustments to reconcile consolidated net loss to net cash used in operating activities:
Depreciation	2,219	2,571
Impairment of fixed assets	0	785
Increase in fair value of Symphony Icon, Inc. purchase liability	4,243	2,862
Share-based compensation	3,313	2,922
Changes in operating assets and liabilities:
Decrease in accounts receivable	168	239
Increase in prepaid expenses and other current assets	(2,834)	(991)
Decrease in other assets	48	366
Increase (decrease) in accounts payable and other liabilities	(317)	2,360
Decrease in deferred revenue	0	(76)
Net cash used in operating activities	(48,959)	(45,229)
Cash flows from investing activities:
Purchases of property and equipment	(329)	(815)
Proceeds from disposal of property and equipment	1	2,516
Purchases of investments	(151,776)	(64,126)
Maturities of investments	49,384	83,609
Net cash provided by (used in) investing activities	(102,720)	21,184
Cash flows from financing activities:
Proceeds from issuance of common stock	276	188
Repurchase of common stock	(285)	(108)
Repayment of debt borrowings	(706)	(2,915)
Other financing activities	(136)	0
Net cash used in financing activities	(851)	(2,835)
Net decrease in cash and cash equivalents	(152,530)	(26,880)
Cash and cash equivalents at beginning of period	186,309	47,208
Cash and cash equivalents at end of period	33,779	20,328
Supplemental disclosure of cash flow information:
Cash paid for interest	1,029	1,385
Supplemental disclosure of non-cash investing and financing activities:
Unrealized gain (loss) on investments	$ (41)	$ 66