Employee Benefit Plans (Fair Value Of Plan Assets At The Measurement Date) (Details) - USD ($) $ in Thousands	Sep. 30, 2025		Sep. 30, 2024		Sep. 30, 2023
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 76,809	[1]	$ 81,216	[2]
Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	18,036	[1]	19,025	[2]
Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	58,773	[1]	62,191	[2]
Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0	[1]	0	[2]
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	78,191		82,310		$ 72,383
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	7,878		594
Cash and Cash Equivalents | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	7,878		594
Cash and Cash Equivalents | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Cash and Cash Equivalents | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Total Fixed Income
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	68,931		63,998
Total Fixed Income | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	10,158		1,807
Total Fixed Income | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	58,773		62,191
Total Fixed Income | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
U.S. Government Obligations
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			1,807
U.S. Government Obligations | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			1,807
U.S. Government Obligations | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			0
U.S. Government Obligations | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			0
Mutual Bond Fund
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	10,158
Mutual Bond Fund | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	10,158
Mutual Bond Fund | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0
Mutual Bond Fund | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0
Corporate Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	50,728		52,891
Corporate Debt Securities | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Corporate Debt Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	50,728		52,891
Corporate Debt Securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Government Strips
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	7,782		9,024
Government Strips | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Government Strips | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	7,782		9,024
Government Strips | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Asset-Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	263		276
Asset-Backed Securities | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	0		0
Asset-Backed Securities | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	263		276
Asset-Backed Securities | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets	$ 0		0
Mutual Equity Funds
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			16,624
Mutual Equity Funds | Quoted Prices In Active Markets For Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			16,624
Mutual Equity Funds | Significant Other Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			0
Mutual Equity Funds | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Fair Value of Plan Assets			$ 0

[1] Plan assets measured at fair value on a recurring basis excludes approximately $1,382 of net unsettled security transactions.

[2] (1) Plan assets measured at fair value on a recurring basis excludes approximately 1,094 of net unsettled security transactions