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Summary of Significant Accounting Policies - Leases (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Summary of Significant Accounting Policies      
Existence of option to extend true    
Renewal term 25 years    
Right to use asset $ 113,400 $ 87,400  
Lease Liability $ 118,321 $ 88,800  
Minimum      
Summary of Significant Accounting Policies      
Lease terms 12 months    
Maximum      
Summary of Significant Accounting Policies      
Lease terms 24 years    
Adjustment for ASU | ASU 2016- 02      
Summary of Significant Accounting Policies      
Right to use asset     $ 82,200
Lease Liability     82,200
Adjustments | ASU 2016- 02      
Summary of Significant Accounting Policies      
Right to use asset     82,200
Lease Liability     $ 82,200