INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
INCOME TAXES
Income (loss) before income taxes	$ 109,691	$ (76,101)	$ 194,039	$ (56,843)
(Provision for) benefit from income taxes	(18,821)	39,658	(28,616)	37,015
Effective tax rate (as a percent)	17.16%	(52.11%)	14.75%	(65.12%)
Statutory federal income tax rate (as a percent)	35.00%		35.00%
Unrecognized tax benefits	66,726		66,726		63,593
Reserves released related to effective settlement of refundable R&D credits for the tax years 2008-2009	2,525
Additional reserves expected to be released, low end of range	1,000		1,000
Additional reserves expected to be released, high end of range	$ 7,000		$ 7,000

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The estimated lower bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

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The estimated upper bound of the reasonably possible change in the total amount of the unrecognized tax benefit (that will significantly increase or decrease within twelve months of the balance sheet date) for a tax position taken.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from settlements with taxing authorities.

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