COMMITMENTS AND CONTINGENCIES (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Commitments and Contingencies Disclosure [Abstract]
Rent expense under operating leases	$ 11,500,000	$ 7,400,000	$ 5,500,000
Loss Contingencies [Line Items]
Long-term other receivable	11,831,000	11,831,000
Indian Government Tax Authority [Member]
Loss Contingencies [Line Items]
Service taxes paid	10,500,000
Accrued service taxes	1,300,000
Total service taxes	11,800,000
Long-term other receivable	$ 11,831,000
Building [Member]
Loss Contingencies [Line Items]
Lease term	10 years