Fair Value (Assets Measured At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands		Mar. 31, 2020	Sep. 30, 2019
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		$ 63,764	$ 72,479
Fair Value, Measurements, Nonrecurring | Impaired Loans, Net of Allowance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		61,489	71,492
Fair Value, Measurements, Nonrecurring | Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	[1]	2,275	987
Fair Value, Measurements, Nonrecurring | Quoted Prices In Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		0	0
Fair Value, Measurements, Nonrecurring | Quoted Prices In Active Markets For Identical Assets (Level 1) | Impaired Loans, Net of Allowance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		0	0
Fair Value, Measurements, Nonrecurring | Quoted Prices In Active Markets For Identical Assets (Level 1) | Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	[1]	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) | Impaired Loans, Net of Allowance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) | Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	[1]	0	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		63,764	72,479
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) | Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total	[1]	2,275	987
Measurement Input, Discounted Appraised Value | Collateral Value | Significant Unobservable Inputs (Level 3) | Impaired Loans, Net of Allowance
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total		$ 61,489	$ 71,492

[1] ⁽¹⁾  Amounts represent fair value measurements of properties before deducting estimated costs to dispose.