Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income/(Loss)	Total
Beginning Balance at Dec. 31, 2008	$ 6,481	$ 6,058,786	$ (4,360,775)	$ (263,570)	$ 1,440,922
Beginning Balance, shares at Dec. 31, 2008	648,132
Net income/(loss)			(47,719)		(47,719)
Foreign currency translation adjustments				5,273
Net unrealized gain (loss) on investments, net of tax of $1,957,$644 and $0 for year 2009,2010 and 2011 respectively				3,248
Net unrealized gain (loss) on derivatives, net of tax of $467, $0 and $0 for year 2009, 2010 and 2011, respectively				775
Actuarial loss on pension and post-retirement plans, net of tax of $717, $0 and $0 for year 2009, 2010 and 2011, respectively				(23,828)
Amortization of transition asset, prior service cost and net actuarial (gain) loss				(1,539)
Total comprehensive income (loss)					(63,790)
Issuance under employee equity incentive plans, net	84	13,828			13,912
Issuance under employee equity incentive plans, net, shares	8,352
Stock-based compensation		70,060			70,060
Ending Balance at Dec. 31, 2009	6,565	6,142,674	(4,408,494)	(279,641)	1,461,104
Ending Balance, shares at Dec. 31, 2009	656,484
Net income/(loss)			39,972		39,972
Foreign currency translation adjustments				162
Net unrealized gain (loss) on investments, net of tax of $1,957,$644 and $0 for year 2009,2010 and 2011 respectively				1,032
Net unrealized gain (loss) on derivatives, net of tax of $467, $0 and $0 for year 2009, 2010 and 2011, respectively				357
Actuarial loss on pension and post-retirement plans, net of tax of $717, $0 and $0 for year 2009, 2010 and 2011, respectively				(43,008)
Amortization of transition asset, prior service cost and net actuarial (gain) loss				2,833
Total comprehensive income (loss)					1,348
Issuance under employee equity incentive plans, net	101	37,736			37,837
Issuance under employee equity incentive plans, net, shares	10,084
Repurchase of shares	(514)	(249,428)			(249,942)
Repurchase of shares, shares	(51,377)				51,400
Stock-based compensation		67,155			67,155
Ending Balance at Dec. 31, 2010	6,152	5,998,137	(4,368,522)	(318,265)	1,317,502
Ending Balance, shares at Dec. 31, 2010	615,191				615,191
Net income/(loss)			331,491		331,491
Foreign currency translation adjustments				(4,786)
Net unrealized gain (loss) on investments, net of tax of $1,957,$644 and $0 for year 2009,2010 and 2011 respectively				(1,018)
Net unrealized gain (loss) on derivatives, net of tax of $467, $0 and $0 for year 2009, 2010 and 2011, respectively				(2,778)
Actuarial loss on pension and post-retirement plans, net of tax of $717, $0 and $0 for year 2009, 2010 and 2011, respectively				(213,701)
Amortization of transition asset, prior service cost and net actuarial (gain) loss				7,320
Total comprehensive income (loss)					116,528
Issuance under employee equity incentive plans, net	190	73,702			73,892
Issuance under employee equity incentive plans, net, shares	18,971
Repurchase of shares	(724)	(498,062)			(498,786)
Repurchase of shares, shares	(72,395)				72,400
Stock-based compensation		49,804			49,804
Ending Balance at Dec. 31, 2011	$ 5,618	$ 5,623,581	$ (4,037,031)	$ (533,228)	$ 1,058,940
Ending Balance, shares at Dec. 31, 2011	561,767				561,767