Investment in Our Unconsolidated Joint Venture (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
MEMBERS' EQUITY
Our investment in unconsolidated joint venture	$ 12,343	$ 12,533
Corporate Joint Venture [Member]
ASSETS
Real estate, net	52,834	53,137
Cash and cash equivalents	249	218
Restricted cash	407	361
Tenant and other receivables, net	16	21
Prepaid expenses and other assets, net	84	71
Intangible assets, net	12,695	12,829
Total assets	66,285	66,637
LIABILITIES
Mortgage payable, net	41,006	40,963
Accounts payable and accrued expenses	592	608
Total liabilities	41,598	41,571
MEMBERS' EQUITY
Members' equity	27,651	27,795
Accumulated deficit	(2,964)	(2,729)
Total members' equity	24,687	25,066
Total liabilities and members' equity	66,285	66,637
Our investment in unconsolidated joint venture	$ 12,343	$ 12,533