Note 4 - Investment in Donlin Gold - Summary of the Company's Investment in Donlin Gold LLC (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023
Current assets: Cash, prepaid expenses, and other receivables	$ 107,108		$ 107,108		$ 127,219
Current liabilities: Accounts payable, accrued liabilities and lease obligations	(964)		(964)		(703)
Income (Loss) from Equity Method Investments	(2,814)	$ (3,978)	(9,765)	$ (15,996)
Donlin Gold [Member]
Current assets: Cash, prepaid expenses, and other receivables	3,802		3,802		3,410
Non-current assets: Right-of-use assets, property and equipment	1,088		1,088		1,456
Non-current assets: Mineral property	32,615		32,615		32,615
Current liabilities: Accounts payable, accrued liabilities and lease obligations	(1,230)		(1,230)		(1,669)
Non-current liabilities: Reclamation and lease obligations	(771)		(771)		(741)
Net assets	35,504		35,504		$ 35,071
Donlin Gold [Member]
Balance – beginning of period	3,454	4,602	3,071	3,848
Mineral property expenditures	(2,675)	(3,827)	(9,327)	(15,542)
Depreciation	(128)	(141)	(408)	(424)
Accretion	(11)	(10)	(30)	(30)
Income (Loss) from Equity Method Investments	(2,814)	(3,978)	(9,765)	(15,996)
Funding	2,864	2,475	10,198	15,247
Balance – end of period	$ 3,504	$ 3,099	$ 3,504	$ 3,099