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Prepaid and Other Current Assets (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Advances to suppliers $ 3,966 $ 0
Collateral posted with broker for derivative instruments 410 1,489
Prepaid insurance 5,147 14,932
Derivative assets 3,953 1,346
Other 6,332 6,881
Total $ 19,808 $ 24,648