Intangible Assets and Liabilities - Annual Amortization of Intangible Assets, Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
2016 (six months remaining)	$ 14,239
2017	19,658
2018	11,753
2019	10,542
2020	8,456
Thereafter	25,366
Intangible Assets, net	90,014	$ 111,623
Liabilities
2016 (six months remaining)	3,294
2017	3,323
2018	2,196
2019	1,885
2020	1,337
Thereafter	9,378
Acquired Lease Intangibles, Net	$ 21,413	$ 25,655