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Derivative Instruments (Details)
$ in Millions
6 Months Ended
Sep. 13, 2018
USD ($)
Jun. 30, 2020
USD ($)
instrument
Dec. 31, 2019
USD ($)
Derivative Instruments      
Number of Instruments used for trading | instrument   0  
Interest rate swap      
Derivative Instruments      
Notional Amount | $ $ 165.0 $ 148.5 $ 152.6
Notional amount interest rate 75.00%    
Notional amount adjustment 75.00%