Employee Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 352	$ 392	$ 1,057	$ 1,177
Expected return on plan assets	(388)	(373)	(1,163)	(1,120)
Amortization of net (gain) loss	190	141	570	422
Net periodic benefit cost	154	160	464	479
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	15	48	45
Interest cost	9	10	26	29
Amortization of net (gain) loss		(3)		(11)
Net periodic benefit cost	$ 25	$ 22	$ 74	$ 63