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Leases (Narrative) (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
branchOffice
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
branchOffice
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Lessee, Lease, Description [Line Items]          
Weighted average remaining lease term 19 years 6 months   19 years 6 months    
Weighted average discount rate 2.92%   2.92%    
Total operating lease expense $ 700 $ 600 $ 1,600 $ 1,300  
Operating right-of-use lease assets 19,707   19,707   $ 20,719
Operating lease liabilities $ 20,280   $ 20,280   $ 21,192
Minimum          
Lessee, Lease, Description [Line Items]          
Option extension period 5 years   5 years    
Maximum          
Lessee, Lease, Description [Line Items]          
Option extension period 10 years   10 years    
Land and Building          
Lessee, Lease, Description [Line Items]          
Number of branch locations | branchOffice 16   16    
Land          
Lessee, Lease, Description [Line Items]          
Number of branch locations | branchOffice 9   9