Fixed assets (Details) $ in Thousands	12 Months Ended
Nov. 30, 2021 USD ($)	Nov. 30, 2020 USD ($)
Cost
Cost, beginning balance	$ 431	$ 3,902
Reclassed to ROU asset	(200)
Cost, ending balance	231	431
Accumulated amortization
Accumulated amortization, beginning balance	225	3,187
Depreciation	21	91
Assets derecognized (note 4(a))		3,053
ROU asset reclass	(44)
Accumulated amortization, ending balance	202	225
Net Book Value
Net Book Value	29	206
Revision of Prior Period, Adjustment [Member] \| ASC 842 adoption
Cost
Cost, beginning balance	200
Assets derecognized (note 4(a))		3,671
Cost, ending balance		200
British Columbia, Canada
Cost
Cost, beginning balance	115	115
Cost, ending balance	115	115
Accumulated amortization
Accumulated amortization, beginning balance	114	111
Depreciation	1	3
Accumulated amortization, ending balance	115	114
Net Book Value
Net Book Value		1
Furniture and equipment \| British Columbia, Canada
Cost
Cost, beginning balance	63	63
Cost, ending balance	63	63
Accumulated amortization
Accumulated amortization, beginning balance	42	29
Depreciation	14	13
Accumulated amortization, ending balance	56	42
Net Book Value
Net Book Value	7	21
Leasehold improvements \| British Columbia, Canada
Cost
Cost, beginning balance	253	53
Reclassed to ROU asset	(200)
Cost, ending balance	53	253
Accumulated amortization
Accumulated amortization, beginning balance	69	18
Depreciation	6	51
ROU asset reclass	(44)
Accumulated amortization, ending balance	31	69
Net Book Value
Net Book Value	22	184
Leasehold improvements \| British Columbia, Canada \| Revision of Prior Period, Adjustment [Member] \| ASC 842 adoption
Cost
Cost, beginning balance	$ 200
Cost, ending balance		200
Machinery and equipment \| Alaska, USA
Cost
Cost, beginning balance		3,667
Accumulated amortization
Accumulated amortization, beginning balance		3,026
Depreciation		23
Assets derecognized (note 4(a))		3,049
Machinery and equipment \| Alaska, USA \| Revision of Prior Period, Adjustment [Member] \| ASC 842 adoption
Cost
Assets derecognized (note 4(a))		3,667
Vehicles \| Alaska, USA
Cost
Cost, beginning balance		4
Accumulated amortization
Accumulated amortization, beginning balance		3
Depreciation		1
Assets derecognized (note 4(a))		4
Vehicles \| Alaska, USA \| Revision of Prior Period, Adjustment [Member] \| ASC 842 adoption
Cost
Assets derecognized (note 4(a))		$ 4

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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