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Mineral properties and development costs - Mineral property expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
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Nov. 30, 2020 | Nov. 30, 2019
Mineral property expense | $ 1,545 | $ 19,211
Alaska, USA |  |
Community | 137 | 596
Drilling |  | 5,194
Engineering | 723 | 2,410
Environmental | 99 | 611
Geochemistry and geophysics | 12 | 1,259
Land and permitting | 134 | 744
Project support | 249 | 4,652
Other income |  | (13)
Wages and benefits | 191 | 3,758
Mineral property expense | $ 1,545 | $ 19,211

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- Definition The amount of drilling expense incurred during the year. + References No definition available. + Details
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- Definition Engineering expense + References No definition available. + Details
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- Definition Geochemistry and geophysics + References No definition available. + Details
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- Definition Land and permitting + References No definition available. + Details
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- Definition Exploration expenses related to the mining industry would be included in operating expenses. + References No definition available. + Details
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- Definition Project support + References No definition available. + Details
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- Definition The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109237650&loc=d3e13064-110858 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859 + Details
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- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(4)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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- Definition Amount of revenue and income classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.4) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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