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Derivative Instruments and Hedging Activities - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
deliveryobligation
Jun. 30, 2020
USD ($)
deliveryobligation
Jun. 30, 2019
USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Number of open physical obligations | deliveryobligation 0 0  
Derivative [Line Items]      
Settlements of derivative financial instruments   $ 23,998 $ (3,579)
Interest Rate Swap      
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Derivative, notional amount $ 190,000 190,000  
Derivative [Line Items]      
Derivative, notional amount $ 190,000 $ 190,000  
Derivative, Fixed Interest Rate 0.68% 0.68%  
Unrealized gain (loss) on derivatives $ 900    
Settlements of derivative financial instruments $ (100)