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Securities, Gains (Loss) on Securities, Securities Pledged, and Securities Sold Under Agreements to Repurchase (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Security
Mar. 31, 2021
USD ($)
Security
Dec. 31, 2021
USD ($)
Gains (Loss) on Sales of Securities [Abstract}      
Net securities gain (loss) $ 99 $ (168)  
Realized pre-tax gain on sales and calls of AFS securities   60  
Unrealized loss from fair value adjustment of equity securities 99 (228)  
Equity Securities at Fair Value [Abstract]      
Equity securities at fair value 2,352   $ 2,253
Amortized cost of securities sold under agreements to repurchase 347,400   314,100
Asset Pledged as Collateral [Member] | Public Deposits and for Other Purposes [Member]      
Equity Securities at Fair Value [Abstract]      
Securities 499,800   $ 545,600
Visa Class B Restricted Stock [Member]      
Equity Securities at Fair Value [Abstract]      
Equity securities at fair value 2,400    
Increase (decrease) in fair value of equity securities $ 99 $ (228)  
Number of equity securities sold (in shares) | Security 0 0