INCOME TAXES (Schedule of Components of Income Tax Provision (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Current—domestic	$ 773	$ 161	$ (1,048)
Deferred—domestic	(980)	(862)	(980)
Current—foreign	56,968	55,233	43,169
Deferred—foreign	(290)	45	(8)
Provision for income taxes	$ 56,471	$ 54,577	$ 41,133