Document And Entity Information - USD ($)	12 Months Ended
	May 31, 2019	Aug. 08, 2019	Nov. 30, 2018
Document Information [Line Items]
Entity Registrant Name	Corvus Gold Inc.
Entity Central Index Key	0001507964
Trading Symbol	corvf
Current Fiscal Year End Date	--05-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		111,962,845
Entity Public Float			$ 124,579,221
Entity Shell Company	false
Document Type	10-K
Document Period End Date	May 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Title of 12(g) Security	Common Stock