Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Investment in real estate:
Land	$ 984,224	$ 984,224
Land improvements	2,573,046	2,565,299
Buildings and other depreciable property	515,801	495,127
Real Estate Investment Property, at Cost, Total	4,073,071	4,044,650
Accumulated depreciation	(1,004,300)	(948,581)
Net investment in real estate	3,068,771	3,096,069
Cash	177,895	37,126
Notes receivable, net	43,078	45,469
Investment in joint ventures	9,519	8,420
Rent and other customer receivables, net	909	1,046
Deferred financing costs, net	19,561	20,620
Retail Related Inventory, Merchandise	2,283	1,569
Deferred commission expense	23,959	22,841
Escrow deposits and other assets	55,105	45,214
Assets of Disposal Group, Including Discontinued Operation	120,049	119,852
Total Assets	3,521,129	3,398,226
Liabilities:
Mortgage notes payable	2,122,883	2,061,610
Term loan	200,000	200,000
Unsecured lines of credit	0	0
Accrued payroll and other operating expenses	71,723	63,672
Deferred revenue - upfront payments from right-to-use contracts	65,569	62,979
Deferred revenue - right-to-use annual payments	14,949	11,088
Accrued interest payable	10,144	10,500
Rents and other customer payments received in advance and security deposits	60,988	54,017
Distributions payable	25,020	0
Liabilities of Disposal Group, Including Discontinued Operation	10,815	10,058
Total Liabilities	2,582,091	2,473,924
Stockholders' Equity:
Preferred stock value	0	0
Common stock, $0.01 par value	834	832
Paid-in capital	1,014,170	1,012,514
Distributions in excess of accumulated earnings	(276,448)	(287,652)
Accumulated other comprehensive loss	(1,718)	(2,590)
Total Stockholders' Equity	872,982	859,248
Non-controlling interests - Common OP Units	66,056	65,054
Total Equity	939,038	924,302
Total Liabilities and Equity	3,521,129	3,398,226
Cumulative Series C Six Point Seven Five Percent Redeemable Perpetual Preferred Stock [Domain]
Stockholders' Equity:
Preferred stock value	$ 136,144	$ 136,144