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Acquisition - Purchase Price of PCD Loans (Details) - West Suburban acquired loans
$ in Thousands
Dec. 01, 2021
USD ($)
Business Acquisition [Line Items]  
Purchase price of PCD loans at acquisition $ 1,500,974
PCD  
Business Acquisition [Line Items]  
Par value of acquired loans 108,241
Allowance for credit losses (12,075)
Non-credit discount (1,723)
Purchase price of PCD loans at acquisition $ 94,443