Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Finance Leases
Premises, Furniture and Equipment, Net	$ 2,120	$ 2,330
Other Borrowings	$ 3,096	$ 3,265
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Premises, Furniture and Equipment, Net	Premises, Furniture and Equipment, Net
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Borrowings	Other Borrowings
Operating Leases
Operating Lease Right-of-Use Assets	$ 6,241	$ 8,579
Operating Lease Liabilities	$ 6,344	$ 8,675
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Accrued Interest Receivable and Other Assets	Accrued Interest Receivable and Other Assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Accrued Interest Payable and Other Liabilities	Accrued Interest Payable and Other Liabilities