BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Reserves For Doubtful Collection of Long-term Receivables (Details) (USD $)	12 Months Ended
	Sep. 30, 2012
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	$ 20,279,000
Additions: Charges to bad debt expense	1,606,000	[1]
Deductions: Adjustments	(8,000)
Balance, end of period	21,877,000
Adjustment to increase reserves for doubtful collection of long-term receivables	326,000
Affiliates
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	20,201,000
Additions: Charges to bad debt expense	1,606,000	[1]
Deductions: Adjustments	0
Balance, end of period	21,807,000
Tenants
Allowance for Loan and Lease Losses [Roll Forward]
Balance, beginning of period	78,000
Additions: Charges to bad debt expense	0	[1]
Deductions: Adjustments	(8,000)
Balance, end of period	$ 70,000

[1] Includes adjustment to increase reserves for doubtful collection of long-term receivables by $326,000, which related to prior periods.