Other Assets - Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Acquired lease intangibles, net	$ 38,853	$ 18,418
Leasing costs, net	9,338	10,839
Leasing incentives, net	4,764	5,408
Prepaid expenses and other	10,056	2,781
Advance deposits on property acquisitions	75	3,500
Preacquisition development costs	1,079	2,504
Other assets	$ 64,165	$ 43,450