Variable Interest Entity (Details) $ / shares in Units, $ in Thousands	1 Months Ended
	Dec. 31, 2016 USD ($)	Jun. 30, 2017 USD ($)	Dec. 08, 2016 USD ($) property subsidiary $ / shares
Schedule of Equity Method Investments [Line Items]
Accrued rents and accounts receivable, net of allowance for doubtful accounts	$ 213	$ 487
Dividends, paid-in-kind	4,100
Pillarstone OP [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage			18.60%
Accrued rents and accounts receivable, net of allowance for doubtful accounts			$ 4,100
Pillarstone Variable Interest Entity [Member]
Schedule of Equity Method Investments [Line Items]
Accrued rents and accounts receivable, net of allowance for doubtful accounts	$ 213	$ 487
Whitestone [Member] | Pillarstone Variable Interest Entity [Member]
Schedule of Equity Method Investments [Line Items]
Number of wholly-owned subsidiaries contributed to variable interest entity | subsidiary			4
Number of non-core properties contributed to variable interest entity | property			14
Consideration amount			$ 84,000
Consideration, limited partnership interest			$ 18,100
Consideration, limited partnership interest (in dollars per share) | $ / shares			$ 1.331
Liabilities assumed			$ 65,900