Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Accounting Policies [Abstract]
Foreign currency translation adjustment, net of income tax benefit of $0 and $200, respectively	$ (5,851)	$ (5,566)
Net retirement plan liability adjustment, net of income tax benefit of $2,409 and $4,090, respectively	(3,866)	(6,720)
Interest rate swap agreement, net of income tax benefit of $16 and $35, respectively	(26)	(58)
Total accumulated other comprehensive loss	$ (9,743)	$ (12,344)