Deferred Costs and Other Intangibles, Net - Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Total	$ 53,845	$ 56,567
Deferred Leasing Costs
Finite-Lived Intangible Assets [Line Items]
Remaining 2016	1,463
2017	2,054
Total	3,517
Deferred Financing Costs
Finite-Lived Intangible Assets [Line Items]
Remaining 2016	412
2017	1,633
2018	1,633
2019	1,633
2020	1,011
Total	6,322
Value of in-place leases
Finite-Lived Intangible Assets [Line Items]
Remaining 2016	2,222
2017	908
2018	21
2019	2
Total	3,153
Trademark
Finite-Lived Intangible Assets [Line Items]
Remaining 2016	165
2017	660
2018	92
Total	917
Database
Finite-Lived Intangible Assets [Line Items]
Remaining 2016	75
2017	300
2018	300
2019	300
2020	132
Total	$ 1,107