Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Acquired lease intangibles, net	$ 29,881	$ 38,853
Leasing costs, net	9,651	9,338
Leasing incentives, net	4,217	4,764
Interest rate swaps and caps	1,515	259
Prepaid expenses and other	8,937	9,797
Advance deposits on property acquisitions	400	75
Preacquisition development costs	1,352	1,079
Other assets	$ 55,953	$ 64,165