Employee Benefit Plans (Net Periodic Benefit Cost For Pension And Other Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost	$ 1,570	$ 1,554	$ 1,500
Expected return on plan assets	(1,493)	(1,584)	(1,508)
Amortization of net loss (gain)	562	464	194
Recognized net actuarial loss	11,335
Net periodic benefit cost	639	434	186
Other Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	60	51	62
Interest cost	38	32	51
Amortization of net loss (gain)	(15)	(48)	(11)
Recognized net actuarial loss	5,532
Net periodic benefit cost	$ 83	$ 35	$ 102