INVESTMENTS IN EQUITY INVESTEES (Details) (USD $)	Sep. 30, 2013	Sep. 30, 2012
Schedule of Equity Method Investments [Line Items]
Investments in equity investees	$ 152,791,000	$ 155,795,000
Steckman Ridge [Member]
Schedule of Equity Method Investments [Line Items]
Investments in equity investees	129,707,000	132,931,000
Iroquois [Member]
Schedule of Equity Method Investments [Line Items]
Investments in equity investees	23,084,000	22,864,000
Equity Method Investee [Member] | Steckman Ridge [Member]
Schedule of Equity Method Investments [Line Items]
Outstanding principal balance	$ 70,400,000	$ 70,400,000