Schedule of Common Shares Issued and Outstanding (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
Apr. 20, 2018	May 31, 2018	May 31, 2019	Nov. 30, 2018
Bought deal financing		$ 28,750
Share issuance costs		$ (1,819)
Share capital [Member]
Number of shares			131,585,612	105,684,523
Ascribed value			$ 164,069	$ 136,525
Bought deal financing (Shares)	24,784,482	24,784,482		24,784,482
Bought deal financing	$ 28,700	$ 28,750		$ 28,750
Share issuance costs		$ (1,819)		$ (1,805)
Exercise of options (shares)			145,294	315,148
Exercise of options			$ 81	$ 140
Restricted Share Units (Shares)			412,501	800,000
Restricted Share Units			$ 424	$ 457
NovaGold DSU Conversion (Shares)				1,459
NovaGold DSU conversion				$ 2
Number of shares			132,143,407	131,585,612
Ascribed value			$ 164,574	$ 164,069

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