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Leases (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
property
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Leases [Abstract]      
Number of Leased Properties Owned by Related Parties | property 2    
Costs and Expenses, Related Party | $ $ 0.4 $ 1.2 $ 1.3