Summary of Significant Accounting Policies (Details 7) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Foreign Currency Translation Adjustment	Sep. 30, 2012 Pension and Postretirement, including curtailment	Sep. 30, 2012 Accumulated Other Comprehensive Loss
Components of accumulated other comprehensive loss
Balance at the beginning of the period	$ (99,091)	$ (83,048)	$ 251	$ (83,299)	$ (83,048)
Fiscal year change			698	(16,741)	(16,043)
Balance at the end of the period	$ (99,091)	$ (83,048)	$ 949	$ (100,040)	$ (99,091)