Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 143,769	$ (35,398)	$ 85,424
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax of $0 for all periods	7,165	(2,176)	(7,174)
Minimum pension liability adjustment, net of tax of $8,094 for 2013, $4,875 for 2012, and $3,209 for 2011	14,176	(5,561)	(5,110)
Other comprehensive income (loss)	21,341	(7,737)	(12,284)
Comprehensive income (loss)	$ 165,110	$ (43,135)	$ 73,140