COVER PAGE - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 08, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	033-36383
Entity Registrant Name	VIDLER WATER RESOURCES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-2723335
Entity Address, Address Line One	3480 GS Richards Blvd., Suite 101
Entity Address, City or Town	Carson City
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89703
City Area Code	775
Local Phone Number	885-5000
Title of 12(b) Security	Common Stock, par Value $0.001
Trading Symbol	VWTR
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 139.6
Entity Common Stock, Shares Outstanding		18,524,730
Documents Incorporated by Reference [Text Block]	Portions of the registrant’s Definitive Proxy Statement to be filed with the United States Securities and Exchange Commission pursuant to Regulation 14A in connection with the registrant’s 2021 Annual Meeting of Shareholders, to be filed subsequent to the date hereof, are incorporated by reference into Part III of this Annual Report on Form 10-K.
Entity Central Index Key	0000830122
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false