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Securities, Gains (Loss) on Securities, Securities Pledged, and Securities Sold Under Agreements to Repurchase (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Security
Sep. 30, 2021
USD ($)
Security
Dec. 31, 2021
USD ($)
Gains (Loss) on Sales of Securities [Abstract]          
Net securities gain (loss) $ (159) $ (62) $ (285) $ 50  
Realized pre-tax loss on sales and calls of AFS securities     1 2  
Realized pre-tax gain on sales and calls of AFS securities       62  
Unrealized (loss) gain from fair value adjustment of equity securities (159) (62) (284) $ (10)  
Equity Securities at Fair Value [Abstract]          
Equity securities at fair value 1,969   1,969   $ 2,253
Amortized cost of securities sold under agreements to repurchase 306,600   306,600   314,100
Asset Pledged as Collateral [Member] | Public Deposits and for Other Purposes [Member]          
Equity Securities at Fair Value [Abstract]          
Securities 584,800   584,800   $ 545,600
Visa Class B Restricted Stock [Member]          
Equity Securities at Fair Value [Abstract]          
Equity securities at fair value 2,000   $ 2,000    
Increase (decrease) in fair value of equity securities $ (159) $ (62)      
Number of equity securities sold (in shares) | Security     0 0