Redeemable Noncontrolling Interest (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	$ 53,681	$ 0
Acquisition of redeemable noncontrolling interest	2,836	45,857
Sale of additional shares to parent	(7,981)
Net income attributable to redeemable noncontrolling interests	3,378	1,300
Contribution to maintain ownership percentage	6,135
Foreign currency translation adjustment attributable to noncontrolling interests	(1,212)	(2,293)
Ending balance	$ 56,837	$ 44,864