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Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Aug. 31, 2019
Jun. 30, 2019
Derivative Financial Instruments      
Loss Recognized in AOCI (Effective Portion) $ (28,794)    
Interest Rate Swap      
Derivative Financial Instruments      
Notional amount     $ 300,000
Loss Recognized in AOCI (Effective Portion) (28,794)    
Interest Rate Swap Second Agreements      
Derivative Financial Instruments      
Notional amount   $ 400,000  
June 2019 Swap Agreements      
Derivative Financial Instruments      
Notional amount 100,000    
Unmodified June 2019 Swap Agreements      
Derivative Financial Instruments      
Notional amount $ 200,000