INTEREST RATE SWAPS (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Derivative [Line Items]
Gain (loss) on interest rate cash flow hedge ineffectiveness	$ 0	$ (400,000)	$ 0
Interest Rate Swap [Member]
Derivative [Line Items]
Number of interest rate swap agreements	5
Notional value, interest rate swap agreements	50,000,000.0
Interest Rate Swap [Member] | Revolving Credit Facility [Member]
Derivative [Line Items]
Amount of hedged item	250,000,000
Interest rate fixed as result of interest rate swap hedges	3.40%
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative [Line Items]
Interest rate derivative contracts that will be reclassified to earnings during the next twelve months	1,600,000
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	1,500,000	(1,500,000)	(1,500,000)
Cash Flow Hedging [Member] | Interest Rate Swap [Member] | Interest Expense [Member]
Derivative [Line Items]
Loss (gain) reclassified from AOCI into income	$ 1,800,000	$ 1,600,000	$ 400,000