Supplemental Detail for Certain Components of Consolidated Balance Sheets (Details 2) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Other assets, net
Deferred financing costs, net	$ 21,355	$ 23,274
Notes receivable issued in connection with property sales	18,142	18,342
Prepaid expenses	12,990	14,137
Restricted escrow deposits	8,083	36,540
Impounds related to mortgages payable	6,730	5,789
Corporate assets, net	2,287	2,600
Other items	72	2,797
Total other assets	82,490	107,650
Credit Facility
Other assets, net
Credit facility origination costs, net	$ 12,831	$ 4,171