Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Mar. 09, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	001-34855
Entity Registrant Name	WHITESTONE REIT
Entity Central Index Key	0001175535
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	76-0594970
Entity Address, Address Line One	2600 South Gessner
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77063
City Area Code	713
Local Phone Number	827-9595
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 376,965,526
Entity Common Stock, Shares Outstanding		49,145,844
Documents Incorporated by Reference	We incorporate by reference in Part III of this Annual Report on Form 10-K portions of our definitive proxy statement for our 2022 Annual Meeting of Shareholders, which proxy statement will be filed no later than 120 days after the end of our fiscal year ended December 31, 2021.
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Shares of Beneficial Interest, par value $0.001 per share
Trading Symbol	WSR
Security Exchange Name	NYSE
Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
No Trading Symbol Flag	true
Security Exchange Name	NYSE