Fair Value (Quantitative Information About Significant Unobservable Inputs Categorized Within Level 3 Of The Fair Value Hierarchy) (Details) - Fair Value, Inputs, Level 3 $ in Thousands	Jun. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Collateral Value | Measurement Input, Discounted Appraised Value | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, impaired loans, net of allowance	0	0
Collateral Value | Measurement Input, Discounted Appraised Value | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, impaired loans, net of allowance	0.34	0.30
Collateral Value | Measurement Input, Discounted Appraised Value | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, impaired loans, net of allowance	0.063	0.061
Collateral Value | Measurement Input, Discounted Appraised Value | Impaired Loans, Net of Allowance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 61,616	$ 71,492
Secondary Market Pricing | Measurement Input, Closure Rate | Interest Rate Lock Commitments | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, interest rate lock commitments	0	0
Secondary Market Pricing | Measurement Input, Closure Rate | Interest Rate Lock Commitments | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, interest rate lock commitments	1	1
Secondary Market Pricing | Measurement Input, Closure Rate | Interest Rate Lock Commitments | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input, interest rate lock commitments	0.671	0.656
Secondary Market Pricing | Measurement Input, Closure Rate | Interest Rate Lock Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 681	$ 44