Employee Benefit Plans (Net Periodic Benefit Cost For Pension And Retiree Medical Plans) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Pension Benefits [Member]
Service Cost	$ 0	$ 0	$ 0	$ 0
Interest Cost	360	363	1,080	1,090
Expected return on plan assets	(328)	(345)	(984)	(1,035)
Amortization of prior service credit	0	0	0	0
Amortization of net loss	79	26	236	78
Net periodic benefit cost (credit)	111	44	332	133
Other Benefits [Member]
Service Cost	15	13	44	39
Interest Cost	13	14	40	42
Expected return on plan assets	0	0	0	0
Amortization of prior service credit	0	(27)	0	(83)
Amortization of net loss	0	0	0	0
Net periodic benefit cost (credit)	$ 28	$ 0	$ 84	$ (2)