Schedule II (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Currency translation adjustments	$ (704)	$ 155	$ 4
Allowance for Trade Receivables [Member]
Balance at Beginning of Year	8,872	7,217	2,322
Additions: Charged to Costs and Expenses	1,283	3,408	4,139
Additions: Charged to Other Accounts	916	5	1,074
Deductions	(3,993)	(1,758)	(318)
Balance at End of Year	7,078	8,872	7,217
Valuation Allowance of Deferred Tax Assets [Member]
Balance at Beginning of Year	11,783	2,752	3,201
Additions: Charged to Costs and Expenses	271	9,031	7
Additions: Charged to Other Accounts	0	0	0
Deductions	(2,568)	0	(456)
Balance at End of Year	$ 9,486	$ 11,783	$ 2,752