COMMITMENTS AND CONTINGENT LIABILITIES (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013	Aug. 31, 2009
Commitments and Contingencies Disclosure [Abstract]
Operating leases, rent expense, net	$ 29,556,000	$ 27,784,000	$ 22,265,000
Aggregate future minimum lease payments for operating leases in 2015	186,213,000
Aggregate future minimum lease payments for operating leases in 2016	69,419,000
Aggregate future minimum lease payments for operating leases in 2017	17,666,000
Aggregate future minimum lease payments for operating leases in 2018	14,609,000
Aggregate future minimum lease payments for operating leases in 2019	10,005,000
Aggregate future minimum lease payments for operating leases thereafter	9,294,000
Net capital cost value				$ 5,000,000
Obligation under consent order	0
Net capital cost value in proposed remedial action plan				$ 10,000,000
Loss contingency claim asserted	$ 0