BASIS OF PRESENTATION - Long-Term Receivables (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013		Jun. 30, 2013		Mar. 31, 2013	Sep. 30, 2012
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	$ 57,198,000	[1]	$ 53,374,000	[1]
Additions: Issuance of affiliate advances and tenant loans	1,994,000		5,886,000
Deductions: Payments received	(35,000)		(103,000)
Balance, end of period	59,157,000	[1]	59,157,000	[1]
Interest receivable	27,200,000		27,200,000		25,700,000	22,900,000
Affiliates
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	53,678,000	[1]	49,841,000	[1]
Additions: Issuance of affiliate advances and tenant loans	1,920,000		5,757,000
Deductions: Payments received	0		0
Balance, end of period	55,598,000	[1]	55,598,000	[1]
Tenants and Others
Notes, Loans and Financing Receivable, Gross, Noncurrent [Roll Forward]
Balance, beginning of period	3,520,000	[1]	3,533,000	[1]
Additions: Issuance of affiliate advances and tenant loans	74,000		129,000
Deductions: Payments received	(35,000)		(103,000)
Balance, end of period	$ 3,559,000	[1]	$ 3,559,000	[1]

[1] Includes interest receivable of $25.7 million, $27.2 million and $22.9 million as of March 31, 2013, June 30, 2013 and September 30, 2012, respectively. The WTG receivables no longer accrue interest pursuant to a release and reimbursement agreement entered into in September 2010.