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Other Borrowings - Junior Subordinated Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Junior Subordinated Debt      
Junior subordinated debt securities   $ 117,200 $ 144,300
Discount   1,400 $ 14,100
Trust preferred securities redeemed   39,900  
Extinguishment of debt cost   $ (11,706)  
Junior Subordinated Debt      
Junior Subordinated Debt      
Debt instrument term   5 years  
Junior subordinated debt securities   $ 117,200  
Long-term Debt, Weighted Average Interest Rate, at Point in Time   1.89% 2.05%
Long-term Debt, Weighted Average Interest Rate, over Time   1.97% 2.51%
Trust preferred securities redeemed $ 38,500    
Extinguishment of debt cost $ 11,700    
Junior Subordinated Debt net of discount      
Junior Subordinated Debt      
Long-term Debt, Weighted Average Interest Rate, over Time   2.85% 3.56%
Trusts | Junior Subordinated Debt      
Junior Subordinated Debt      
Amount of trust preferred securities excluded from Tier 1 capital   $ 0  
SAVB Capital Trust I and II and FFCH Capital Trust I | Junior Subordinated Debt      
Junior Subordinated Debt      
Liability for the junior subordinated debt securities recorded on SAVB Capital Trust I and II   117,200  
Discount   1,400  
Amount paid to holders, if the entity call backs the subordinated debt securities   $ 118,600  
Discount amortization period   4 years