SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4)-K (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012	Dec. 12, 2014 building
Allowance for doubtful accounts and notes receivable
Notes receivable, net	$ 28,630,000	$ 20,554,000
Notes receivable from various tenants, net of an allowance for uncollectible notes receivable included in Notes receivable	500,000	400,000
Changes in allowance for doubtful accounts and notes receivable accounts
Balance at the beginning of the period	7,390,000	8,914,000	8,496,000
Provision for doubtful accounts	1,404,000	836,000	1,224,000
Write-offs	(1,175,000)	(2,360,000)	(806,000)
Balance at the end of the period	7,619,000	7,390,000	8,914,000
Municipal Utility District receivables
Receivables net of allowances	5,800,000	5,300,000
Income Taxes
Number of Master Planned Communities	2
Threshold percentage of costs of contractual obligations incurred for recognition of gain for tax purposes	95.00%
Tax Indemnity Receivable
Proceeds From Settlement Of Tax Indemnity Receivable	138,000,000
Internal Revenue Service Payment For Tax Court Decision	203,298,000
Deferred Expenses
Deferred expenses, net of accumulated amortization	13,200,000	7,200,000
Summerlin [Member]
Allowance for doubtful accounts and notes receivable
Notes receivable, net	20,200,000
Note receivable from GGP, interest rate (as a percent)	39.00%
General Growth Properties [Member]
Allowance for doubtful accounts and notes receivable
Notes receivable, net	6,700,000	13,200,000
Note receivable from GGP, interest rate (as a percent)	441.00%
Cash payments under the note receivable	6,900,000
Tax Indemnity Receivable
Proceeds From Settlement Of Tax Indemnity Receivable	138,000,000
Number Of Buildings Acquired				6
Value of buildings received from settlement	130,000,000
Internal Revenue Service Payment For Tax Court Decision	$ 138,000,000