Intangibles - Amortization of Acquired Lease Intangibles (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Future aggregate net amortization of acquired lease intangibles (Net decrease in Revenue)
2017	$ (2,311)
2018	(2,217)
2019	(2,344)
2020	(2,434)
2021	(2,477)
Thereafter	(9,422)
Total	(21,205)
Future aggregate net amortization of acquired lease intangibles (Net Increase in Expenses)
2017	30,305
2018	26,169
2019	21,803
2020	19,426
2021	17,999
Thereafter	92,125
Total	$ 207,827