Employee Benefit Plans (Net Periodic Benefit Cost For Pension And Other Plans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Pension Benefits [Member]
Service Cost	$ 0	$ 0	$ 0
Interest Cost	1,442	1,454	1,440
Expected return on plan assets	(1,312)	(1,380)	(1,285)
Amortization of prior service cost (credit)	0	0	0
Recognized net actuarial loss	314	104	35
Net periodic benefit cost (credit)	444	178	190
Other Postretirement Benefit Plans Defined Benefit [Member]
Service Cost	61	54	52
Interest Cost	53	55	55
Expected return on plan assets	0	0	0
Amortization of prior service cost (credit)	0	(111)	(111)
Recognized net actuarial loss	0	0	0
Net periodic benefit cost (credit)	$ 114	$ (2)	$ (4)