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Financial Instruments and Derivatives - Effect of Derivative Instruments on Consolidated Statement of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Derivative [Line Items]    
Derivative Instruments, Gain (Loss) Recognized in Income, Net $ (15,108) $ (27,638)
Designated as Hedging Instrument | Interest Expense    
Derivative [Line Items]    
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income (Effective Portion) (279) (253)
Not Designated as Hedging Instrument | Interest Expense    
Derivative [Line Items]    
Derivative Instruments, Gain (Loss) Recognized in Income, Net $ (15,108) $ (27,638)