Supplemental Detail for Certain Components of Consolidated Balance Sheets (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Other assets, net
Loans receivable	$ 48,736	$ 35,126
Notes receivable issued in connection with property sales	19,176	19,300
Prepaid expenses	11,323	9,489
Note receivable issued in connection with acquisition	8,780	8,780
Restricted escrow deposits	7,344	1,805
Impounds related to Mortgages Payable	5,325
Corporate assets, net	1,213	909
Other items	761	424
Total other assets	146,088	115,249
Note
Other assets, net
Deferred financing costs, net	35,422	29,687
Credit Facility
Other assets, net
Deferred financing costs, net	6,399	8,188
Mortgages
Other assets, net
Deferred financing costs, net	1,346	1,541
Term loan
Other assets, net
Deferred financing costs, net	$ 263