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Leases (Narrative) (Details)
$ in Thousands
 6 Months Ended
Jun. 30, 2021
USD ($)
branch_office
Jun. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Lessee, Lease, Description [Line Items]      
Weighted average remaining lease term 19 years 1 month 6 days    
Weighted average discount rate 3.33%    
Total operating lease expense $ 1,300 $ 1,400  
Operating right-of-use lease assets 16,432   $ 17,514
Lease liabilities $ 16,893   $ 17,900
Minimum      
Lessee, Lease, Description [Line Items]      
Option extension period 5 years    
Maximum      
Lessee, Lease, Description [Line Items]      
Option extension period 10 years    
Land and Building      
Lessee, Lease, Description [Line Items]      
Number of branch locations | branch_office 7    
Land      
Lessee, Lease, Description [Line Items]      
Number of branch locations | branch_office 8