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Leases (Summary of Lease Costs) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Leases [Abstract]      
Amortization of property and equipment $ 518 $ 596  
Interest expense on finance leases 89 110  
Total finance lease expense 607 706  
Operating lease expense 7,432 [1] 7,521 [1] $ 7,100
Sublease income (306) (399)  
Total lease expense $ 7,733 $ 7,828  
[1] Total rental expense for operating leases was $7.1 million in 2020.