Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Other Assets
Deferred leasing costs	$ 33,205	$ 27,229
Deferred rent receivable	26,933	21,510
Corporate furniture, fixtures and equipment	8,744	7,980
Internal-use software	3,741	2,421
Deferred financing costs	6,649	7,474
Prepaid expense	5,453	6,251
Other	696	2,735
Total	85,421	75,600
Estimated amortization of deferred leasing costs
Total	$ 33,205	$ 27,229