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FHLB Advances and Other Borrowings - Narrative (Details) | 12 Months Ended
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Sep. 30, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |
Weighted average effective maturity of FHLB advances | 3 years 3 months
Federal Home Loan Bank of Des Moines |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |
Federal home loan bank, percent of assets | 45.00%

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