CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ (11,674)	$ (17,015)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	4,888	4,118
Stock-based compensation	2,038	2,343
Equity in net loss of Rhapsody	2,233	368
Deferred income taxes, net	(1,559)	(19)
Gain on sale of patent and other technology assets, net of costs	0	1,580
Realized translation gain	0	(1,611)
Other	(75)	(3)
Net change in certain operating assets and liabilities:
Trade accounts receivable	1,554	1,394
Prepaid expenses and other assets	2,823	(2,738)
Accounts payable	(1,784)	(894)
Accrued and other liabilities	(5,177)	(3,185)
Net cash provided by (used in) operating activities	(6,733)	(17,242)
Cash flows from investing activities:
Purchases of equipment, software, and leasehold improvements	(1,194)	(2,798)
Purchases of short-term investments	(43,318)	(9,969)
Proceeds from sales and maturities of short-term investments	27,640	5,027
Payment of acquisition costs, net of cash acquired	(700)	0
Net cash provided by (used in) investing activities	(17,572)	(7,740)
Cash flows from financing activities:
Proceeds from issuance of common stock (stock options and stock purchase plan)	20	675
Tax payments from shares withheld upon vesting of restricted stock	(166)	0
Payment of contingent consideration	(828)	0
Net cash provided by (used in) financing activities	(974)	675
Effect of exchange rate changes on cash and cash equivalents	(1,225)	1,306
Net increase (decrease) in cash and cash equivalents	(26,504)	(23,001)
Cash and cash equivalents, beginning of period	163,198	106,333
Cash and cash equivalents, end of period	136,694	83,332
Supplemental disclosure of cash flow information:
Cash received from income tax refunds	3,612	39
Cash paid for income taxes	725	517
Non-cash investing activities:
Increase (decrease) in accrued purchases of equipment, software, and leasehold improvements	$ 172	$ 1,430