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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Income Tax Disclosure [Abstract]        
Income tax (expense) benefit $ (6,571) $ 123,969 $ (15,492) $ 123,613
Valuation allowance of deferred tax assets released   $ 124,600   $ 124,600