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Income Taxes Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2016
Dec. 31, 2014
Income Tax Disclosure [Abstract]          
INCOME TAX PROVISION (BENEFIT) $ (176,974) $ 69,130 $ 37,516    
Income tax refunds (95,229) (2,157) (41,610)    
Net Operating Loss, Carryback 422,100 $ 116,700 $ 185,400    
Deferred Tax Assets, Operating Loss Carryforwards 5,200       $ 5,700
Deferred Tax Assets, Operating Loss Carryforwards, Domestic 8,500        
Deferred Tax Assets, Operating Loss Carryforwards, State and Local $ 7,400        
Deferred Tax Assets, Tax Credit Carryforwards       $ 700