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Leases (Future Minimum Lease Payments) (Details)
$ in Thousands
Sep. 30, 2021
USD ($)
lease
Dec. 31, 2020
USD ($)
Leases [Abstract]    
Future lease payments on lease not yet commenced $ 500  
Number of leases not yet commenced | lease 1  
Term of lease not yet commenced yet 10 years  
2021 $ 1,630  
2022 5,169  
2023 3,820  
2024 2,475  
2025 1,969  
Thereafter 8,876  
Total future minimum lease payments 23,939  
Less: Imputed interest 2,269  
Total operating lease liabilities $ 21,670 $ 20,116