Investment in Ambler Metals LLC - Financial information (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Nov. 30, 2023	Feb. 11, 2020
The carrying value of equity method investment
Share of loss on equity investment	$ (793)	$ (1,485)
Investment in Ambler Metals	134,340		$ 135,021
Assets [Abstract]
Total assets	136,559		138,020
Cash and cash equivalents	2,012		2,590
Liabilities [Abstract]
Total liabilities	(464)		(465)
Ambler Metals' Net Loss
General and administrative	415	408
Professional Fees	200	570
Foreign exchange (gain) loss	2	(4)
Ambler Metals
Assets [Abstract]
Total assets	94,090		97,180
Cash and cash equivalents	61,331		63,829
Mineral properties	30,899		30,899
Liabilities [Abstract]
Total liabilities	(1,204)		(2,931)
Accounts payable and accrued liabilities	(835)		(2,500)
Members' equity (total assets less total liabilities)	92,886		94,249
Ambler Metals' Net Loss
Depreciation	38	37
Corporate salaries and wages	234	444
General and administrative	127	133
Mineral property expense	1,094	2,285
Professional Fees	177	159
Foreign exchange (gain) loss	2
Interest and other income	87	89
Comprehensive loss	1,585	$ 2,969
Ambler Metals LLC
The carrying value of equity method investment
Investment in Ambler Metals			$ 135,021
Joint venture, contributed amount	112
Share of loss on equity investment	(793)
Investment in Ambler Metals	$ 134,340			$ 176,000