Accounts Payable and Other Liabilities (Schedule of Accounts Payable and Other Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Accounts payable and accrued expenses	$ 7,286	$ 7,200
Accrued interest expense	2,901	2,855
Accrued property taxes	2,870	4,277
Contingent consideration obligations	4,500	5,640
Distributions payable to stockholders	11,032	10,968
Tenant deposits	1,039	1,039
Deferred rental income	8,172	6,970
Derivative liabilities	574	1,247
Accounts payable and other liabilities	$ 38,374	$ 40,196