Pensions and Other Post-retirement Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Components of Net Periodic Benefit Cost
Interest cost	$ 1,105,000	$ 1,103,000	$ 2,210,000	$ 2,206,000
Expected return on plan assets	(1,496,000)	(1,292,000)	(2,992,000)	(2,585,000)
Recognized net actuarial loss	685,000	862,000	1,370,000	1,724,000
Net pension expense	294,000	673,000	588,000	1,345,000
Employer contribution			0
Minimum
PLAN ASSETS
Expected minimum contribution required by law to the Pension Plan in fiscal 2013	$ 2,100,000		$ 2,100,000