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Financial Instruments - Summary of Fair Values of Derivative Instruments in Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Derivative [Line Items]    
Fair Value $ 56,058  
Fair Value   $ 16,373
Variable to Fixed Interest Rate Swap | Designated as Hedging Instrument | Other long-term liabilities    
Derivative [Line Items]    
Fair Value $ 56,058  
Variable to Fixed Interest Rate Swap | Designated as Hedging Instrument | Other Assets    
Derivative [Line Items]    
Fair Value   $ 16,373