BASIS OF PRESENTATION - Long-Term Receivables (Details) (USD $)	3 Months Ended
	Dec. 31, 2014		Sep. 30, 2014
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	$ 69,208,000	[1]
Additions: Issuance of affiliate advances and tenant and other loans, including interest receivable	2,473,000
Deductions: Payments received	(38,000)
Balance, end of period	71,643,000	[1]
Interest receivable	37,500,000		35,700,000
Affiliates
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	66,596,000	[1]
Additions: Issuance of affiliate advances and tenant and other loans, including interest receivable	2,452,000
Deductions: Payments received	0
Balance, end of period	69,048,000	[1]
Others
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	2,612,000	[1]
Additions: Issuance of affiliate advances and tenant and other loans, including interest receivable	21,000
Deductions: Payments received	(38,000)
Balance, end of period	$ 2,595,000	[1]

[1] Includes interest receivable of $37.5 million and $35.7 million as of December 31, 2014 and September 30, 2014, respectively. The WTG receivables no longer accrue interest pursuant to a release and reimbursement agreement entered into in September 2010.