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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 Disclosure [Abstract]      
Change in valuation allowance $ 59,321 $ 297 $ (542)
Income tax (expense) benefit (51,970) 3,751 $ (8,793)
Valuation allowance $ 80,670 $ 21,349