Variable Interest Entity (Schedules) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Property	$ 81,170	$ 80,564
Accumulated depreciation	(761)	(150)
Total real estate assets	80,409	80,414
Cash and cash equivalents	1,303	1,243
Escrows and acquisition deposits	778	2,274
Accrued rents and accounts receivable, net of allowance for doubtful accounts	526	213
Receivable due from related party	2,943	2,818
Unamortized lease commissions and deferred legal costs, net	1,100	1,150
Prepaid expenses and other assets	326	149
Total assets	87,385	88,261
Notes payable	65,186	65,474
Accounts payable and accrued expenses	1,808	3,509
Payable due to related party	965	265
Tenants' security deposits	1,056	996
Total liabilities	69,240	70,464
Pillarstone Variable Interest Entity [Member]
Schedule of Equity Method Investments [Line Items]
Property	81,170	80,564
Accumulated depreciation	(761)	(150)
Total real estate assets	80,409	80,414
Cash and cash equivalents	1,300	1,236
Escrows and acquisition deposits	778	2,274
Accrued rents and accounts receivable, net of allowance for doubtful accounts	526	213
Receivable due from related party	2,943	2,818
Unamortized lease commissions and deferred legal costs, net	1,100	1,150
Prepaid expenses and other assets	320	134
Total assets	87,376	88,239
Notes payable	65,186	65,474
Accounts payable and accrued expenses	1,646	3,481
Payable due to related party	965	265
Tenants' security deposits	1,056	996
Total liabilities	68,853	70,216
Related party receivables	$ 300	$ 300