Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ 87,876	$ (176,096)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization expense	8,560	8,858
Stock-based compensation expense	27,688	27,879
Other non-cash based compensation expense	2,292	1,685
Secured notes (due 2012) discount amortization expense		6,605
Change in fair value of derivative instruments		5,598
Deferred incomes taxes	(2,281)
Other non-cash items, net	18	(204)
Changes in operating assets and liabilities:
Accounts receivable, net	(49,093)	6,922
Inventories	(16,915)	(17,662)
Prepaid expenses and other current assets	(20,541)	(12,979)
Accounts payable	(1,400)	(1,066)
Accrued expenses and other liabilities	(7,245)	(22,678)
Excess tax benefit from share-based payment arrangements	(227)
Accrued restructuring expense	(840)	(781)
Accrued interest	3,350	3,350
Income taxes payable (Alios)	(11,874)
Deferred revenues	(16,452)	(16,059)
Net cash provided by (used in) operating activities	2,916	(186,628)
Cash flows from investing activities:
Purchases of marketable securities	(403,179)	(124,996)
Sales and maturities of marketable securities	183,987	536,362
Expenditures for property and equipment	(6,155)	(4,850)
Increase in restricted cash		(21)
Increase in restricted cash and cash equivalents (Alios)	(6,139)
Increase in other assets	(216)	(543)
Net cash provided by (used in) investing activities	(231,702)	405,952
Cash flows from financing activities:
Excess tax benefit from share-based payment arrangements	227
Issuances of common stock from employee benefit plans	21,298	33,643
Payments to redeem a portion of secured notes (due 2012)		(50,000)
Net cash provided by (used in) financing activities	21,525	(16,357)
Effect of changes in exchange rates on cash	(136)	372
Net increase (decrease) in cash and cash equivalents	(207,397)	203,339
Cash and cash equivalents-beginning of period	475,320	243,197
Cash and cash equivalents-end of period	267,923	446,536
Supplemental disclosure of cash flow information:
Cash paid for interest	0
Capitalization of construction in-process related to financing lease transactions	$ 38,229