Temporary Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Increase (Decrease) in Temporary Equity [Roll Forward]
Redeemable noncontrolling interest, beginning balance	$ 22,800	$ 47,297
Temporary equity, beginning balance	22,800	47,297
Issuance of common stock, subject to possible redemption	11,696
Sale of additional shares to parent	(9,267)	(15,496)
Net income (loss) attributable to redeemable noncontrolling interest	(5,015)	(7,387)
Foreign currency translation adjustment attributable to noncontrolling interest	(5,312)	(1,460)
Effective portion of cash flow hedge	29	(154)
Redeemable noncontrolling interest, ending balance	3,235	22,800
Temporary equity, ending balance	14,931	22,800
Common Class A Non-voting, Subject to Possible Redemption [Member]
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock, subject to possible redemption, beginning balance	0	0
Issuance of common stock, subject to possible redemption	11,696
Common stock, subject to possible redemption, ending balance	$ 11,696	$ 0