Note 5 - Investment in Donlin Gold - Summary of the Company's Investment in Donlin Gold LLC (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2022	Aug. 31, 2021	Nov. 30, 2021
Income (Loss) from Equity Method Investments	$ (9,412)	$ (6,748)			$ (21,893)	$ (12,914)
Current assets: Cash, prepaid expenses and other receivables	157,113		$ 157,113		157,113		$ 169,451
Current liabilities: Accounts payable, accrued liabilities and lease obligations	(807)		(807)		(807)		(682)
Donlin Gold [Member]
Mineral Property Expenditures			(9,280)	$ (6,650)	(21,567)	(12,680)
Depreciation			(120)	(98)	(291)	(234)
Accretion			(12)	0	(35)	0
Funding			8,438	6,901	24,925	15,025
Current assets: Cash, prepaid expenses and other receivables	10,185		10,185		10,185		3,815
Non-current assets: Right-of-use assets, property and equipment	2,153		2,153		2,153		1,417
Non-current assets: Mineral property	32,615		32,615		32,615		32,615
Current liabilities: Accounts payable, accrued liabilities and lease obligations	(5,686)		(5,686)		(5,686)		(1,584)
Non-current liabilities: Reclamation and lease obligations	(659)		(659)		(659)		(687)
Net assets	38,608		38,608		38,608		$ 35,576
Donlin Gold [Member]
Balance – Beginning of Period			7,582	4,572	3,576	2,614
Income (Loss) from Equity Method Investments			(9,412)	(6,748)	(21,893)	(12,914)
Balance – End of Period	$ 6,608	$ 4,725	$ 6,608	$ 4,725	$ 6,608	$ 4,725