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Balance Sheet Components - Schedule of Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]    
Collateral posted for derivative instruments after netting with outstanding derivative liabilities $ 4,336 $ 4,434
Prepayments 24,411 19,652
Income taxes receivable 49,814 11,047
Other 6,324 5,009
Total $ 84,885 $ 40,142