Investment in Our Unconsolidated Joint Venture (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
MEMBERS' EQUITY
Our investment in unconsolidated joint venture	$ 11,781	$ 12,533
Corporate Joint Venture [Member]
ASSETS
Real estate, net	52,131	53,137
Cash and cash equivalents	180	218
Restricted cash	390	361
Tenant and other receivables, net	35	21
Prepaid expenses and other assets, net	85	71
Intangible assets, net	12,427	12,829
Total assets	65,248	66,637
LIABILITIES
Mortgage payable, net	41,092	40,963
Accounts payable and accrued expenses	593	608
Total liabilities	41,685	41,571
MEMBERS' EQUITY
Members' equity	27,276	27,795
Accumulated deficit	(3,713)	(2,729)
Total members' equity	23,563	25,066
Total liabilities and members' equity	65,248	66,637
Our investment in unconsolidated joint venture	$ 11,781	$ 12,533