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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

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