Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Loss from continuing operations	$ (561,196)	$ (482,702)
Loss from discontinued operations	(703)	(20,299)
Net loss	(561,899)	(503,001)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	46,921	30,734
Stock-based compensation expense	135,160	103,933
Other non-cash based compensation expense	0	5,856
Intangible asset impairment charge	0	412,900
Deferred income taxes	0	(130,164)
Impairment of property and equipment	978	6,650
Write-down of inventories to net realizable value	0	10,358
Other non-cash items, net	7	5,307
Changes in operating assets and liabilities:
Accounts receivable, net	(7,315)	20,737
Inventories	(4,901)	5,212
Prepaid expenses and other assets	(19,110)	(16,477)
Accounts payable	(5,544)	(46,005)
Accrued expenses and other liabilities	12,210	26,172
Accrued restructuring expense	27,249	2,810
Deferred revenues	(15,085)	(15,447)
Net cash used in operating activities	(391,329)	(80,425)
Cash flows from investing activities:
Purchases of marketable securities	(1,066,772)	(1,850,015)
Sales and maturities of marketable securities	1,203,400	1,842,361
Expenditures for property and equipment	(36,525)	(36,922)
Decrease in restricted cash and cash equivalents	9	31,807
Decrease in restricted cash and cash equivalents (Alios)	0	18,924
Decrease (increase) in deposits	(92)	1,094
Net cash provided by investing activities	100,020	7,249
Cash flows from financing activities:
Issuances of common stock from employee benefit plans	201,274	242,360
Payments to redeem secured notes (due 2015)	0	(158)
Payments on capital lease obligations	(17,215)	(14,601)
Payments on construction financing lease obligation	(45,438)	(63,242)
Proceeds from senior secured term loan	294,383	0
Payments returned related to construction financing lease obligation	8,050	0
Net cash provided by (used in) financing activities	441,054	164,359
Effect of changes in exchange rates on cash	(481)	2,591
Net increase in cash and cash equivalents	149,264	93,774
Cash and cash equivalents—beginning of period	569,299	489,407
Cash and cash equivalents—end of period	718,563	583,181
Supplemental disclosure of cash flow information:
Cash paid for interest	2,817	7,637
Cash paid for income taxes	798	0
Conversion of convertible senior subordinated notes (due 2015) for common stock	0	399,842
Unamortized deferred debt issuance costs exchanged	0	4,230
Capitalization of costs related to construction financing lease obligation	25,564	176,484
Assets acquired under capital lease	8,985	38,520
Issuances of common stock exercises from employee benefit plans receivable	$ 23,035	$ 0