Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 666	$ 1,165	$ 15,775
Charges to operations	24,928
Cash disbursements	(20,947)	(502)	(14,510)
Foreign currency impact	(186)	3	(100)
Balance, end of period	4,461	666	1,165
Historical Restructuring Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	666	1,165	15,775
Charges to operations	(187)
Cash disbursements	(269)	(502)	(14,510)
Foreign currency impact	0	3	(100)
Balance, end of period	210	666	1,165
Employee Severance And Related Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0
Charges to operations	24,391
Cash disbursements	(20,401)	0	0
Foreign currency impact	(192)	0	0
Balance, end of period	3,798	0	0
Facility Closures and Other Costs [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning of period	0	0	0
Charges to operations	724
Cash disbursements	(277)	0	0
Foreign currency impact	6	0	0
Balance, end of period	$ 453	$ 0	$ 0