Annual report pursuant to Section 13 and 15(d)

INCOME TAXES (Narrative) (Details)

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INCOME TAXES (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Examination [Line Items]      
Domestic income (loss) before income taxes $ (1,500,000) $ 36,100 $ 43,500
Foreign income (loss) before income taxes (374,500) 149,000 87,600
Tax benefit recognized for losses incurred 0 0 $ 0
Net deferred tax liability acquired in business combinations 35,300 $ 43,300  
Net operating loss carryforwards - United States federal 393,900    
Net operating loss carryforwards - state 148,200    
Net operating loss carryforwards - foreign $ 413,100