Employee Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits [Member]
Service Cost	$ 0	$ 0	$ 0	$ 0
Interest Cost	340	360	680	720
Expected return on plan assets	(365)	(328)	(730)	(656)
Amortization of net loss	108	79	216	157
Net periodic benefit cost	83	111	166	221
Other Benefits [Member]
Service Cost	17	14	34	29
Interest Cost	11	14	23	27
Expected return on plan assets	0	0	0	0
Amortization of net loss	0	0	0	0
Net periodic benefit cost	$ 28	$ 28	$ 57	$ 56