Retirement Plans (Schedule Of Components Of Net Periodic Benefit Cost For Plans) (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
Retirement Plans [Abstract]
Interest cost	$ 915	$ 905	$ 1,829	$ 1,810
Expected return on assets	(1,075)	(1,021)	(2,149)	(2,042)
Amortization of Prior service cost	3	3	6	6
Amortization of Actuarial loss	492	363	984	726
Net periodic benefit cost	$ 335	$ 250	$ 670	$ 500