Restatement Of Consolidated Financial Statements - Income Statement (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Rental revenues	$ 3,520	$ 0	$ 7,056	$ 0
Other revenues	658	0	1,286	0
Total property revenues	4,178	0	8,342	0
Property operation and maintenance	1,076	0	2,363	0
Real estate taxes	652	0	1,300	0
Total property expenses	1,728	0	3,663	0
General and administrative	45	70	326	105
Depreciation and amortization	855	0	1,571	0
Interest expense	683	5	1,358	10
Total other expense	1,583	75	3,255	115
Income (loss) before loss on disposal of assets and income taxes	867	(75)	1,424	(115)
Loss on sale or disposal of assets	(5)	0	(11)	0
Equity in income of Pillarstone Capital REIT Operating Partnership LP	0		0
Provision for income taxes	(20)	0	(45)	0
Net income (loss)	842	(75)	1,368	(115)
Less: Non-controlling interest in subsidiary	715	0	1,268	0
Net income (loss) attributable to Common Shareholders	$ 127	$ (75)	$ 100	$ (115)
Net income (loss) available to common shareholders (basic)	$ 0.31	$ (0.18)	$ 0.25	$ (0.28)
Net income (loss) available to common shareholders (diluted)	$ 0.04	$ (0.18)	$ 0.03	$ (0.28)
Effect of Restatement
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Rental revenues	$ 3,520		$ 7,056
Other revenues	658		1,286
Total property revenues	4,178		8,342
Property operation and maintenance	1,076		2,363
Real estate taxes	652		1,300
Total property expenses	1,728		3,663
General and administrative	14		147
Depreciation and amortization	855		1,571
Interest expense	678		1,348
Total other expense	1,547		3,066
Income (loss) before loss on disposal of assets and income taxes	903		1,613
Loss on sale or disposal of assets	(5)		(11)
Equity in income of Pillarstone Capital REIT Operating Partnership LP	(94)		(159)
Provision for income taxes	(20)		(45)
Net income (loss)	784		1,398
Less: Non-controlling interest in subsidiary	715		1,268
Net income (loss) attributable to Common Shareholders	$ 69		$ 130
Net income (loss) available to common shareholders (basic)	$ 0.17		$ 0.32
Net income (loss) available to common shareholders (diluted)	$ 0.02		$ 0.10
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Rental revenues	$ 0		$ 0
Other revenues	0		0
Total property revenues	0		0
Property operation and maintenance	0		0
Real estate taxes	0		0
Total property expenses	0		0
General and administrative	31		179
Depreciation and amortization	0		0
Interest expense	5		10
Total other expense	36		189
Income (loss) before loss on disposal of assets and income taxes	(36)		(189)
Loss on sale or disposal of assets	0		0
Equity in income of Pillarstone Capital REIT Operating Partnership LP	94		159
Provision for income taxes	0		0
Net income (loss)	58		(30)
Less: Non-controlling interest in subsidiary	0		0
Net income (loss) attributable to Common Shareholders	$ 58		$ (30)
Net income (loss) available to common shareholders (basic)	$ 0.14		$ (0.07)
Net income (loss) available to common shareholders (diluted)	$ 0.02		$ (0.07)