Document And Entity Information - shares	9 Months Ended
	Feb. 28, 2019	Apr. 02, 2019
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	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Small Business	true
Entity Common Stock, Shares Outstanding (in shares)		110,847,845
Document Type	10-Q
Document Period End Date	Feb. 28, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false