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FHLB Advances and Other Borrowings - Narrative (Details)	12 Months Ended
	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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Federal Home Loan Bank, Advances, Weighted Average Effective Maturity

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