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Alexco Resource Corp. – ‘40-F’ for 12/31/21 – ‘JSON’

On:  Monday, 3/21/22, at 7:00am ET   ·   For:  12/31/21   ·   Accession #:  1410578-22-434   ·   File #:  1-33621

Previous ‘40-F’:  ‘40-F’ on 3/11/21 for 12/31/20   ·   Latest ‘40-F’:  This Filing   ·   2 References:   

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/21/22  Alexco Resource Corp.             40-F       12/31/21  115:14M                                    Toppan Merrill/FA2

Annual Report by a Canadian Issuer   —   Form 40-F   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 40-F        Annual Report by a Canadian Issuer                  HTML    136K 
 2: EX-99.1     Miscellaneous Exhibit                               HTML    522K 
11: EX-99.10    Miscellaneous Exhibit                               HTML     32K 
12: EX-99.11    Miscellaneous Exhibit                               HTML     32K 
13: EX-99.12    Miscellaneous Exhibit                               HTML     32K 
14: EX-99.13    Miscellaneous Exhibit                               HTML     32K 
15: EX-99.14    Miscellaneous Exhibit                               HTML     32K 
16: EX-99.15    Miscellaneous Exhibit                               HTML     31K 
17: EX-99.16    Miscellaneous Exhibit                               HTML     31K 
 3: EX-99.2     Miscellaneous Exhibit                               HTML   1.21M 
 4: EX-99.3     Miscellaneous Exhibit                               HTML    317K 
 5: EX-99.4     Miscellaneous Exhibit                               HTML     33K 
 6: EX-99.5     Miscellaneous Exhibit                               HTML     34K 
 7: EX-99.6     Miscellaneous Exhibit                               HTML     31K 
 8: EX-99.7     Miscellaneous Exhibit                               HTML     31K 
 9: EX-99.8     Miscellaneous Exhibit                               HTML     30K 
10: EX-99.9     Miscellaneous Exhibit                               HTML     32K 
23: R1          Document And Entity Information                     HTML    103K 
24: R2          Consolidated Balance Sheets                         HTML     88K 
25: R3          Consolidated Statements of Loss and Comprehensive   HTML    107K 
                Loss                                                             
26: R4          Consolidated Statements of Cash Flows               HTML    122K 
27: R5          Consolidated Statements of Shareholders' Equity     HTML     72K 
28: R6          Description of Business, Nature of Operations, and  HTML     32K 
                Covid-19 Impacts                                                 
29: R7          Basis of Preparation and Statement of Compliance    HTML     31K 
30: R8          Summary of Significant Accounting Policies          HTML     73K 
31: R9          New Accounting Standards                            HTML     32K 
32: R10         Critical Judgements and Major Sources of            HTML     42K 
                Estimation Uncertainty                                           
33: R11         Investments                                         HTML     31K 
34: R12         Inventories                                         HTML     44K 
35: R13         Mineral Properties, Plant and Equipment             HTML    226K 
36: R14         Embedded Derivative Asset                           HTML     60K 
37: R15         Accounts Payable and Accrued Liabilities            HTML     42K 
38: R16         Lease Liabilities                                   HTML     65K 
39: R17         Revolving Credit Facility                           HTML     31K 
40: R18         Decommissioning and Rehabilitation Provision        HTML     56K 
41: R19         Capital and Reserves                                HTML    158K 
42: R20         Revenue                                             HTML     59K 
43: R21         Cost of Sales                                       HTML     56K 
44: R22         General and Administrative Expenses by Nature of    HTML     49K 
                Expense                                                          
45: R23         Gain on Sale of Net Smelter Return Royalty          HTML     31K 
46: R24         Income Tax Expense                                  HTML    193K 
47: R25         Financial Instruments                               HTML    136K 
48: R26         Capital Management                                  HTML     32K 
49: R27         Supplemental Cash Flow Information                  HTML     46K 
50: R28         Segmented Information                               HTML    152K 
51: R29         Key Management Compensation                         HTML     42K 
52: R30         Commitments                                         HTML     30K 
53: R31         Subsequent Events                                   HTML     32K 
54: R32         Summary of Significant Accounting Policies          HTML    104K 
                (Policies)                                                       
55: R33         Summary of Significant Accounting Policies          HTML     33K 
                (Tables)                                                         
56: R34         Inventories (Tables)                                HTML     43K 
57: R35         Mineral Properties, Plant and Equipment (Tables)    HTML    220K 
58: R36         Embedded Derivative Asset (Tables)                  HTML     53K 
59: R37         Accounts Payable and Accrued Liabilities (Tables)   HTML     42K 
60: R38         Lease Liabilities (Tables)                          HTML     65K 
61: R39         Decommissioning and Rehabilitation Provision        HTML     54K 
                (Tables)                                                         
62: R40         Capital and Reserves (Tables)                       HTML    150K 
63: R41         Revenue (Tables)                                    HTML     59K 
64: R42         Cost of Sales (Tables)                              HTML     55K 
65: R43         General and Administrative Expenses by Nature of    HTML     49K 
                Expense (Tables)                                                 
66: R44         Income Tax Expense (Tables)                         HTML    198K 
67: R45         Financial Instruments (Tables)                      HTML    134K 
68: R46         Supplemental Cash Flow Information (Tables)         HTML     46K 
69: R47         Segmented Information (Tables)                      HTML    150K 
70: R48         Key Management Compensation (Tables)                HTML     42K 
71: R49         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -        HTML     46K 
                Property, Plant and Equipment and Impairment                     
                (Details)                                                        
72: R50         Summary of Significant Accounting Policies          HTML     31K 
                (Details)                                                        
73: R51         Investments - (Details)                             HTML     33K 
74: R52         Inventories (Details)                               HTML     39K 
75: R53         Mineral Properties, Plant and Equipment (Details)   HTML     92K 
76: R54         Mineral Properties, Plant and Equipment -           HTML     33K 
                Additional Information (Details)                                 
77: R55         MINERAL PROPERTIES, PLANT AND EQUIPMENT - Mineral   HTML     73K 
                Properties (Details)                                             
78: R56         Embedded Derivative Asset (Details)                 HTML     40K 
79: R57         Embedded Derivative Asset - Additional Information  HTML    101K 
                (Details)                                                        
80: R58         Accounts Payable and Accrued Liabilities (Details)  HTML     35K 
81: R59         LEASE LIABILITIES - Additional Information          HTML     33K 
                (Details)                                                        
82: R60         LEASE LIABILITIES - Lease liabilities (Details)     HTML     44K 
83: R61         LEASE LIABILITIES - Undiscounted lease payments     HTML     37K 
                (Details)                                                        
84: R62         Revolving Credit Facility (Details)                 HTML     44K 
85: R63         Decommissioning and Rehabilitation Provision        HTML     41K 
                (Details)                                                        
86: R64         Decommissioning and Rehabilitation Provision -      HTML     42K 
                Additional Information (Details)                                 
87: R65         CAPITAL AND RESERVES - Incentive share options      HTML     56K 
                outstanding (Details)                                            
88: R66         CAPITAL AND RESERVES - Incentive share options      HTML     91K 
                outstanding and exercisable (Details)                            
89: R67         CAPITAL AND RESERVES - Changes in RSUs outstanding  HTML     52K 
                (Details)                                                        
90: R68         CAPITAL AND RESERVES - Additional Information       HTML    145K 
                (Details)                                                        
91: R69         Revenue (Details)                                   HTML     47K 
92: R70         Cost of Sales (Details)                             HTML     45K 
93: R71         General and Administrative Expenses by Nature of    HTML     49K 
                Expense (Details)                                                
94: R72         Gain on Sale of Net Smelter Return Royalty          HTML     33K 
                (Details)                                                        
95: R73         INCOME TAX EXPENSE - Major Components of Income     HTML     62K 
                Tax Expense (Details)                                            
96: R74         Income Tax Expense (Details)                        HTML     30K 
97: R75         Income Tax Expense - Net deferred tax liabilities   HTML     71K 
                (Details)                                                        
98: R76         INCOME TAX EXPENSE - Carry forward loss (Details)   HTML     35K 
99: R77         INCOME TAX EXPENSE - Capital losses (Details)       HTML     49K 
100: R78         Financial Instruments (Details)                     HTML     39K  
101: R79         Financial Instruments - Currency Risk (Details)     HTML     52K  
102: R80         FINANCIAL INSTRUMENTS - Exposure to credit Risk     HTML     55K  
                (Details)                                                        
103: R81         FINANCIAL INSTRUMENTS - Commodity Risk (Details)    HTML     50K  
104: R82         FINANCIAL INSTRUMENTS - Contractual maturities      HTML     36K  
                (Details)                                                        
105: R83         FINANCIAL INSTRUMENTS - Additional Information      HTML     45K  
                (Details)                                                        
106: R84         Supplemental Cash Flow Information (Details)        HTML     36K  
107: R85         Segmented Information (Details)                     HTML     84K  
108: R86         Key Management Compensation (Details)               HTML     35K  
109: R87         Commitments (Details)                               HTML     30K  
110: R88         Subsequent Events (Details)                         HTML     57K  
113: XML         IDEA XML File -- Filing Summary                      XML    197K  
111: XML         XBRL Instance -- axu-20211231x40f_htm                XML   3.47M  
112: EXCEL       IDEA Workbook of Financial Reports                  XLSX    132K  
19: EX-101.CAL  XBRL Calculations -- axu-20211231_cal                XML    222K 
20: EX-101.DEF  XBRL Definitions -- axu-20211231_def                 XML    884K 
21: EX-101.LAB  XBRL Labels -- axu-20211231_lab                      XML   1.62M 
22: EX-101.PRE  XBRL Presentations -- axu-20211231_pre               XML   1.26M 
18: EX-101.SCH  XBRL Schema -- axu-20211231                          XSD    349K 
114: JSON        XBRL Instance as JSON Data -- MetaLinks              449±   652K  
115: ZIP         XBRL Zipped Folder -- 0001410578-22-000434-xbrl      Zip    486K

‘JSON’   —   XBRL Instance as JSON Data — MetaLinks

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                        }
                    },
                "localname":  "NumberOfInstrumentsSettlementOfAnnualCashBonusesEquityInstrumentsGranted",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesChangesInRsusOutstandingDetails"
                    ],
                "xbrltype":  "decimalItemType"
                },
            "axu_NumberOfMonthlyInstalments":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of monthly instalments.",
                            "label":  "Number Of Monthly Instalments",
                            "terseLabel":  "Number of monthly instalments"
                            }
                        }
                    },
                "localname":  "NumberOfMonthlyInstalments",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureRevolvingCreditFacilityDetails"
                    ],
                "xbrltype":  "integerItemType"
                },
            "axu_NumberOfNewSharesIssued":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for Equity offering, net of issuance costs of share options by the entity.",
                            "label":  "Number Of New Shares Issued",
                            "verboseLabel":  "Equity Offering, net of issuance costs (in shares)"
                            }
                        }
                    },
                "localname":  "NumberOfNewSharesIssued",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfShareholdersEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfOptionsAvailableForFutureGrants":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of options which are available for future grants",
                            "label":  "Number of options available for future grants"
                            }
                        }
                    },
                "localname":  "NumberOfOptionsAvailableForFutureGrants",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedAsConsiderationToWheaton":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued as a consideration for wheaton corporation.",
                            "label":  "Number Of Shares Issued as a consideration to wheaton",
                            "terseLabel":  "Shares issued - consideration for Wheaton (in shares)"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedAsConsiderationToWheaton",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedForAdvisoryFees":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for advisory fees.",
                            "label":  "Number of shares issued for advisory fees"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedForAdvisoryFees",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedForExerciseOfShareOptions":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for exercise of share options by the entity.",
                            "label":  "Number of shares issued for exercise of share options",
                            "verboseLabel":  "Exercise of share options (in shares)"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedForExerciseOfShareOptions",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfShareholdersEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedForExerciseOfWarrants":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for exercise of warrants by the entity.",
                            "label":  "Number of shares issued for exercise of warrants",
                            "terseLabel":  "Number of common share purchase warrants issued",
                            "verboseLabel":  "Exercise of warrants (in shares)"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedForExerciseOfWarrants",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfShareholdersEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedForReleaseOfDsuSettlementShares":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for release of DSU settlement shares by the entity.",
                            "label":  "Number Of Shares Issued For Release Of Dsu Settlement Shares"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedForReleaseOfDsuSettlementShares",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesIssuedForReleaseOfRsuSettlementShares":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares issued for release of RSU settlement shares by the entity.",
                            "label":  "Number of shares issued for release of RSU settlement shares",
                            "verboseLabel":  "Release of RSU/DSU settlement shares (in shares)"
                            }
                        }
                    },
                "localname":  "NumberOfSharesIssuedForReleaseOfRsuSettlementShares",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfShareholdersEquity"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesOutstandingVestedInSharebasedPaymentArrangement":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The number of shares vested.",
                            "label":  "Number Of Shares Outstanding Vested In Sharebased Payment Arrangement",
                            "terseLabel":  "Vested shares outstanding"
                            }
                        }
                    },
                "localname":  "NumberOfSharesOutstandingVestedInSharebasedPaymentArrangement",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfSharesPerWarrant":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Number of securities into which each warrant or right may be converted.  For example, but not limited to, each warrant may be converted into two shares.",
                            "label":  "Number of shares per warrant",
                            "terseLabel":  "Number of shares per warrant"
                            }
                        }
                    },
                "localname":  "NumberOfSharesPerWarrant",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_NumberOfWarrantsExercised":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the number of common share purchase warrants exercised.",
                            "label":  "Number of Warrants Exercised",
                            "terseLabel":  "Number of common share purchase warrants exercised"
                            }
                        }
                    },
                "localname":  "NumberOfWarrantsExercised",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesAdditionalInformationDetails"
                    ],
                "xbrltype":  "sharesItemType"
                },
            "axu_ObligationToPayCapacityRelatedRefund":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of obligation which is classified as a capacity related refund that will be paid by the reporting company.",
                            "label":  "Obligation to pay capacity related refund",
                            "terseLabel":  "Obligation to pay capacity related refund"
                            }
                        }
                    },
                "localname":  "ObligationToPayCapacityRelatedRefund",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "axu_OreAndConcentrateInventoriesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This member stands for ore and concentrate inventories.",
                            "label":  "Ore and concentrate inventories [Member]"
                            }
                        }
                    },
                "localname":  "OreAndConcentrateInventoriesMember",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentAdditionalInformationDetails"
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                "xbrltype":  "domainItemType"
                },
            "axu_OreprocessingMillComponentsMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Ore-processing mill components [Member]"
                            }
                        }
                    },
                "localname":  "OreprocessingMillComponentsMember",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPropertyPlantAndEquipmentAndImpairmentDetails"
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                "xbrltype":  "domainItemType"
                },
            "axu_OtherComprehensiveIncomeReclassifiedSubsequentlyToNetIncomeLossAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Other Comprehensive Income Reclassified Subsequently To Net Income loss [Abstract]",
                            "verboseLabel":  "Items that may be reclassified subsequently to net loss"
                            }
                        }
                    },
                "localname":  "OtherComprehensiveIncomeReclassifiedSubsequentlyToNetIncomeLossAbstract",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
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                "xbrltype":  "stringItemType"
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            "axu_OtherGeneralAdministrativeExpenses":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of expense relating to kind or other selling, general and administrative activities of the entity.",
                            "label":  "Other General Administrative Expenses",
                            "verboseLabel":  "Other G&A expenses"
                            }
                        }
                    },
                "localname":  "OtherGeneralAdministrativeExpenses",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureSegmentedInformationDetails"
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                "xbrltype":  "monetaryItemType"
                },
            "axu_OtherKenoHillPropertiesMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "Other Keno Hill Properties [Member]"
                            }
                        }
                    },
                "localname":  "OtherKenoHillPropertiesMember",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentMineralPropertiesDetails"
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                "xbrltype":  "domainItemType"
                },
            "axu_OuncesOfSilverProductionPayableDuringPeriod":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the ounces of payable silver production during the period.",
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                            "terseLabel":  "Ounces payable"
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                        }
                    },
                "localname":  "OuncesOfSilverProductionPayableDuringPeriod",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "massItemType"
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            "axu_PercentageOfCorporationPreparesProvisionalInvoiceForValueOfShipment":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents for Percentage of corporation prepares provisional invoice for value of the shipment.",
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                        }
                    },
                "localname":  "PercentageOfCorporationPreparesProvisionalInvoiceForValueOfShipment",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfDecreaseInSilverPricesOfAssetOrCashGeneratingUnit":  {
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                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage of decrease in silver prices of asset or cash-generating unit.",
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                            "terseLabel":  "Percentage of decrease in silver prices"
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                        }
                    },
                "localname":  "PercentageOfDecreaseInSilverPricesOfAssetOrCashGeneratingUnit",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfDepreciationOrAppreciationOfForeignExchange":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of depreciation or appreciation of foreign exchange.",
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                            }
                        }
                    },
                "localname":  "PercentageOfDepreciationOrAppreciationOfForeignExchange",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfIncreaseInDiscountRateOfAssetOrCashGeneratingUnit":  {
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                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Percentage of increase in discount rate of asset or cash-generating unit.",
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                            "terseLabel":  "Percentage of increase in discount rate"
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                        }
                    },
                "localname":  "PercentageOfIncreaseInDiscountRateOfAssetOrCashGeneratingUnit",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentMineralPropertiesDetails"
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfInterestRepresentingFutureProduction":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of interest that represents future payments.",
                            "label":  "Percentage Of Interest Representing Future Production",
                            "terseLabel":  "Percentage Of interest representing future production"
                            }
                        }
                    },
                "localname":  "PercentageOfInterestRepresentingFutureProduction",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfLifeOfMineSilver":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "It represents the percentage rate of life of mine silver.",
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                            "terseLabel":  "Percentage of life of mine silver"
                            }
                        }
                    },
                "localname":  "PercentageOfLifeOfMineSilver",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfMaximumNumberOfSharesIssuedAndOutstandingUnderPlan":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of maximum number of shares issued and outstanding under the plan.",
                            "label":  "Percentage Of Maximum Number Of Shares Issued And Outstanding Under The Plan",
                            "terseLabel":  "Percentage of maximum number of shares issued and outstanding"
                            }
                        }
                    },
                "localname":  "PercentageOfMaximumNumberOfSharesIssuedAndOutstandingUnderPlan",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfMineralPropertyOwnershipAcquisition":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of mineral property ownership.",
                            "label":  "Percentage Of Mineral Property Ownership Acquisition",
                            "terseLabel":  "Percentage of mineral property ownership acquisition"
                            }
                        }
                    },
                "localname":  "PercentageOfMineralPropertyOwnershipAcquisition",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PercentageOfOwnershipInterestInPropertyOffered":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of ownership interest in property offered through agreement",
                            "label":  "Percentage of ownership interest in property offered",
                            "terseLabel":  "Percentage of ownership interest in property offered"
                            }
                        }
                    },
                "localname":  "PercentageOfOwnershipInterestInPropertyOffered",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentMineralPropertiesDetails"
                    ],
                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfReasonablyPossibleDecreaseInRiskAssumption":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The reasonably possible percentage of the decrease in the designated risk component used to determine the value of the financial instrument.  Excludes defined benefit plan obligations.",
                            "label":  "Percentage Of Reasonably Possible Decrease In Risk Assumption",
                            "terseLabel":  "Percentage of reasonably possible decrease in risk assumption"
                            }
                        }
                    },
                "localname":  "PercentageOfReasonablyPossibleDecreaseInRiskAssumption",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureFinancialInstrumentsCommodityRiskDetails",
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfReasonablyPossibleIncreaseInRiskAssumption":  {
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                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The reasonably possible percentage of the increase in the designated risk component used to determine the value of the financial instrument.  Excludes defined benefit plan obligations.",
                            "label":  "Percentage Of Reasonably Possible Increase In Risk Assumption",
                            "terseLabel":  "Percentage of reasonably possible increase in risk assumption"
                            }
                        }
                    },
                "localname":  "PercentageOfReasonablyPossibleIncreaseInRiskAssumption",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureFinancialInstrumentsCommodityRiskDetails",
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfSilverDeliveredUnderWheatonSilverPurchaseAgreement":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of silver delivered under wheaton silver agreement.",
                            "label":  "Percentage Of Silver Delivered Under Wheaton Silver Purchase Agreement",
                            "terseLabel":  "Percentage of silver delivered under Wheaton SPA"
                            }
                        }
                    },
                "localname":  "PercentageOfSilverDeliveredUnderWheatonSilverPurchaseAgreement",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "pureItemType"
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                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the percentage of spot price payable at US$15 per ounce silver.",
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                            "terseLabel":  "Percentage of spot price payable at US$15 per ounce silver"
                            }
                        }
                    },
                "localname":  "PercentageOfSpotPriceOne",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfSpotPriceTwo":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Represents the percentage of spot price payable at US$23 per ounce silver",
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                            "terseLabel":  "Percentage of spot price payable at US$23 per ounce silver"
                            }
                        }
                    },
                "localname":  "PercentageOfSpotPriceTwo",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfStandbyFeeOnUndrawnAmounts":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of standby fee on the undrawn amount.",
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                            "terseLabel":  "Percentage of standby fee on undrawn amount"
                            }
                        }
                    },
                "localname":  "PercentageOfStandbyFeeOnUndrawnAmounts",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
                },
            "axu_PercentageOfUnitsToBeIssuedOnVestingDateDependingOnPerformanceSharesGranted":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The percentage of units to be issued on the vesting date",
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                            "terseLabel":  "Percentage of units to be issued on the vesting date"
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                        }
                    },
                "localname":  "PercentageOfUnitsToBeIssuedOnVestingDateDependingOnPerformanceSharesGranted",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "percentItemType"
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            "axu_PlantAndEquipmentMember":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "This member stands for plant and equipment.",
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                            }
                        }
                    },
                "localname":  "PlantAndEquipmentMember",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentDetails"
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                "xbrltype":  "domainItemType"
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            "axu_PortionOfEmbeddedDerivativeAssetSettled":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of portion of embedded derivative asset settled.",
                            "label":  "Portion of Embedded Derivative Asset Settled",
                            "terseLabel":  "Portion of embedded derivative asset settled"
                            }
                        }
                    },
                "localname":  "PortionOfEmbeddedDerivativeAssetSettled",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetDetails"
                    ],
                "xbrltype":  "monetaryItemType"
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            "axu_PrepaymentAmountReceivedUnderFacility":  {
                "auth_ref":  [
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The prepayment amount received under the facility.",
                            "label":  "Prepayment Amount Received Under The Facility",
                            "terseLabel":  "Prepayment amount received under the facility"
                            }
                        }
                    },
                "localname":  "PrepaymentAmountReceivedUnderFacility",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
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                "auth_ref":  [
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                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount represents the maximum price of silver per ounce.",
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                            }
                        }
                    },
                "localname":  "PriceOfSilver",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "perUnitItemType"
                },
            "axu_ProceedsFromFurtherUpfrontDepositPayments":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
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                            "terseLabel":  "Proceeds from further Up-front deposit payments"
                            }
                        }
                    },
                "localname":  "ProceedsFromFurtherUpfrontDepositPayments",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "axu_ProceedsFromPaymentOfDisposalOrMaturityOfAvailableForSaleFinancialAssets":  {
                "auth_ref":  [
                    ],
                "calculation":  {
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                        "weight":  1.0
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                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "Amount of proceeds from payment of disposal or maturity of available for sale financial assets",
                            "label":  "Proceeds From Payment of Disposal Or Maturity Of Available for sale Financial Assets",
                            "terseLabel":  "Proceeds from sale (purchase) of investments"
                            }
                        }
                    },
                "localname":  "ProceedsFromPaymentOfDisposalOrMaturityOfAvailableForSaleFinancialAssets",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfCashFlows"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "axu_ProceedsFromSaleOfNetSmelterReturnRoyalty":  {
                "auth_ref":  [
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                "calculation":  {
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfCashFlows":  {
                        "order":  3.0,
                        "parentTag":  "ifrs-full_CashFlowsFromUsedInInvestingActivitiesContinuingOperations",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount received towards sale of smelter royalty.",
                            "label":  "Proceeds From Sale Of Net Smelter Return Royalty",
                            "terseLabel":  "Proceeds from sale of net smelter return royalty"
                            }
                        }
                    },
                "localname":  "ProceedsFromSaleOfNetSmelterReturnRoyalty",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
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            "axu_ProceedsFromUpfrontDepositPayments":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The cash inflow from the up-front deposit payments.",
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                            "terseLabel":  "Proceeds From Up-front deposit payments"
                            }
                        }
                    },
                "localname":  "ProceedsFromUpfrontDepositPayments",
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                "presentation":  [
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                "xbrltype":  "monetaryItemType"
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            "axu_ProductionCostsExpense":  {
                "auth_ref":  [
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of Product cost expense.",
                            "label":  "Production Costs Expense",
                            "terseLabel":  "Production costs"
                            }
                        }
                    },
                "localname":  "ProductionCostsExpense",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
            "axu_ProductionPaymentPerOunce":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The per ounce production payment made by the party.",
                            "label":  "Production payment per ounce"
                            }
                        }
                    },
                "localname":  "ProductionPaymentPerOunce",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureEmbeddedDerivativeAssetAdditionalInformationDetails"
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                "xbrltype":  "perUnitItemType"
                },
            "axu_ProfessionalAndAdvisoryFeesExpense":  {
                "auth_ref":  [
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                "calculation":  {
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                        "weight":  1.0
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                    },
                "crdr":  "debit",
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "documentation":  "The amount of fees paid or payable for professional advisory services.",
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                            "terseLabel":  "Professional and advisory"
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                        }
                    },
                "localname":  "ProfessionalAndAdvisoryFeesExpense",
                "nsuri":  "http://www.alexcoresource.com/20211231",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
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            "axu_ProfessionalAndRegulatoryExpense":  {
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                    },
                "crdr":  "debit",
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                            "terseLabel":  "Professional and regulatory"
                            }
                        }
                    },
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                "crdr":  "debit",
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                    "en-us":  {
                        "role":  {
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                            "terseLabel":  "Promissory note receivable"
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                        }
                    },
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                "localname":  "PromissoryNoteReceivableMember",
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                    },
                "crdr":  "debit",
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                    "en-us":  {
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                            "terseLabel":  "Promissory note receivable"
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                        }
                    },
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                    "en-us":  {
                        "role":  {
                            "label":  "Plant And Equipment"
                            }
                        }
                    },
                "localname":  "PropertyPlantAndEquipmentsMember",
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                "crdr":  "debit",
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                    "en-us":  {
                        "role":  {
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                            "terseLabel":  "Provisionally priced trade receivables"
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                        }
                    },
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                            "documentation":  "Boolean flag that is true only for a form used as a registration statement.",
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                        }
                    },
                "localname":  "DocumentRegistrationStatement",
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                            }
                        }
                    },
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                "nsuri":  "http://xbrl.sec.gov/dei/2021q4",
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                        }
                    },
                "localname":  "EntityAddressAddressLine1",
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                    },
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                    },
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                        }
                    },
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                "nsuri":  "http://xbrl.sec.gov/dei/2021q4",
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                        }
                    },
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                        }
                    },
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                        }
                    },
                "localname":  "EntityAddressesAddressTypeAxis",
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                        }
                    },
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                        }
                    },
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                        }
                    },
                "localname":  "EntityEmergingGrowthCompany",
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                        }
                    },
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                        }
                    },
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                        }
                    },
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                        }
                    },
                "localname":  "EntityPrimarySicNumber",
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                        }
                    },
                "localname":  "EntityRegistrantName",
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                        }
                    },
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                        }
                    },
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                    },
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                        }
                    },
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                        },
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                    },
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                        },
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                            "documentation":  "This member stands for exploration and evaluation expenditures recognised as assets in accordance with the entity's accounting policy.  Exploration and evaluation expenditures are expenditures incurred by an entity in connection with the exploration for, and evaluation of, mineral resources before the technical feasibility and commercial viability of extracting a mineral resource are demonstrable."
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                        },
                    "en-us":  {
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                            }
                        }
                    },
                "localname":  "ExplorationAndEvaluationAssetsMember",
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                "presentation":  [
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                "auth_ref":  [
                    "r199",
                    "r204",
                    "r205",
                    "r209",
                    "r210"
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                    "en-us":  {
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                        }
                    },
                "localname":  "FinancialAssets",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                "crdr":  "debit",
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                        },
                    "en-us":  {
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                            "verboseLabel":  "Fair value per warrant"
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                        }
                    },
                "localname":  "FinancialAssetsAtFairValueThroughProfitOrLoss",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                    "en":  {
                        "role":  {
                            "documentation":  "The amount of non-derivative financial assets that are designated as available for sale or are not classified as (a) loans and receivables; (b) held-to-maturity investments; or (c) financial assets at fair value through profit or loss. [Refer:  Derivative financial assets; Financial assets at fair value through profit or loss; Held-to-maturity investments]"
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                    },
                "localname":  "FinancialAssetsAvailableforsale",
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                "xbrltype":  "monetaryItemType"
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                "auth_ref":  [
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                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for a non-fixed interest rate. [Refer:  Interest rate risk [member]]"
                            }
                        },
                    "en-us":  {
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                    },
                "localname":  "FloatingInterestRateMember",
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                "presentation":  [
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                "xbrltype":  "domainItemType"
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                "auth_ref":  [
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                "calculation":  {
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                    },
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
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                        },
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                    },
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                "xbrltype":  "monetaryItemType"
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                "crdr":  "credit",
                "lang":  {
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                        "role":  {
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                            "negatedTerseLabel":  "Gain on net smelter return royalty"
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                    },
                "localname":  "GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                "xbrltype":  "monetaryItemType"
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                "crdr":  "credit",
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                        "role":  {
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                "presentation":  [
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                "xbrltype":  "monetaryItemType"
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                    "r165",
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                "auth_ref":  [
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                    "r238",
                    "r251"
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                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for aggregated geographical areas.  It also represents the standard value for the 'Geographical areas' axis if no other member is used."
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                        },
                    "en-us":  {
                        "role":  {
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                "auth_ref":  [
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                    "r109",
                    "r112",
                    "r190",
                    "r205",
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                    "r210",
                    "r257",
                    "r263"
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                "lang":  {
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                        "role":  {
                            "documentation":  "This member stands for the amount at which an asset is recognised before deducting any accumulated depreciation (amortisation) and accumulated impairment losses thereon. [Refer:  Depreciation and amortisation expense; Impairment loss]"
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                        },
                    "en-us":  {
                        "role":  {
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                    },
                "localname":  "GrossCarryingAmountMember",
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                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of revenue less cost of sales. [Refer:  Cost of sales; Revenue]"
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                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Gross Profit",
                            "terseLabel":  "Total Gross Loss"
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                        }
                    },
                "localname":  "GrossProfit",
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                        }
                    },
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                    },
                "localname":  "IncomeArisingFromExplorationForAndEvaluationOfMineralResources",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                        }
                    },
                "localname":  "IncomeStatementAbstract",
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                    "r59",
                    "r94",
                    "r147",
                    "r230"
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                "crdr":  "debit",
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                        },
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                    },
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                    "r57"
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                "lang":  {
                    "en":  {
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                        },
                    "en-us":  {
                        "role":  {
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                        }
                    },
                "localname":  "IncomeTaxRelatingToComponentsOfOtherComprehensiveIncome",
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                        },
                    "en-us":  {
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                "localname":  "IncomeTaxRelatingToInvestmentsInEquityInstrumentsOfOtherComprehensiveIncome",
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                        },
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                "localname":  "IncomeTaxesPaidRefundClassifiedAsOperatingActivities",
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                        },
                    "en-us":  {
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                        },
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                        },
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                        },
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                        },
                    "en-us":  {
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                    },
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                        },
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                    },
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                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                "lang":  {
                    "en":  {
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                        },
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                        }
                    },
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                            "terseLabel":  "Interest received"
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                    },
                "localname":  "InventoriesTotal",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
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                    },
                "localname":  "InventoryWritedown2011",
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                    "en-us":  {
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                    },
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                            "documentation":  "This member stands for related parties.  Related parties are persons or entities that are related to the entity that is preparing its financial statements (the reporting entity). (a) A person or a close member of that person\u2019s family is related to a reporting entity if that person: (i) has control or joint control over the reporting entity; (ii) has significant influence over the reporting entity; or (iii) is a member of the key management personnel of the reporting entity or of a parent of the reporting entity. (b) An entity is related to a reporting entity if any of the following conditions applies: (i) The entity and the reporting entity are members of the same group (which means that each parent, subsidiary and fellow subsidiary is related to the others). (ii) One entity is an associate or joint venture of the other entity (or an associate or joint venture of a member of a group of which the other entity is a member). (iii) Both entities are joint ventures of the same third party. (iv) One entity is a joint venture of a third entity and the other entity is an associate of the third entity. (v) The entity is a post-employment benefit plan for the benefit of employees of either the reporting entity or an entity related to the reporting entity.  If the reporting entity is itself such a plan, the sponsoring employers are also related to the reporting entity. (vi) The entity is controlled or jointly controlled by a person identified in (a). (vii) A person identified in (a)(i) has significant influence over the entity or is a member of the key management personnel of the entity (or of a parent of the entity). (viii) The entity, or any member of a group of which it is a part, provides key management personnel services to the reporting entity or to the parent of the reporting entity. [Refer:  Joint ventures [member]; Key management personnel of entity or parent [member]]"
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Related parties"
                            }
                        }
                    },
                "localname":  "RelatedPartiesMember",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                    ],
                "xbrltype":  "domainItemType"
                },
            "ifrs-full_RepairsAndMaintenanceExpense":  {
                "auth_ref":  [
                    "r44"
                    ],
                "calculation":  {
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                        "order":  3.0,
                        "parentTag":  "ifrs-full_OperatingExpense",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of expenses incurred for the day-to-day servicing of assets, which may include the cost of labour, consumables or small parts."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Repairs and maintenance expense",
                            "verboseLabel":  "Mine site maintenance"
                            }
                        }
                    },
                "localname":  "RepairsAndMaintenanceExpense",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RetainedEarningsMember":  {
                "auth_ref":  [
                    "r9",
                    "r10"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for a component of equity representing an entity's cumulative undistributed earnings or deficit."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Accumulated Deficit"
                            }
                        }
                    },
                "localname":  "RetainedEarningsMember",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "domainItemType"
                },
            "ifrs-full_RevenueAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "REVENUE",
                            "verboseLabel":  "Revenues"
                            }
                        }
                    },
                "localname":  "RevenueAbstract",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
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                "xbrltype":  "stringItemType"
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            "ifrs-full_RevenueFromContractsWithCustomers":  {
                "auth_ref":  [
                    "r160",
                    "r161"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of revenue from contracts with customers.  A customer is a party that has contracted with an entity to obtain goods or services that are an output of the entity\u2019s ordinary activities in exchange for consideration."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Revenue from contracts with customers",
                            "terseLabel":  "Revenue from contracts with customers"
                            }
                        }
                    },
                "localname":  "RevenueFromContractsWithCustomers",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureRevenueDetails"
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RevenueFromRenderingOfServices":  {
                "auth_ref":  [
                    "r11"
                    ],
                "calculation":  {
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss":  {
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                        "parentTag":  "ifrs-full_GrossProfit",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of revenue arising from the rendering of services. [Refer:  Revenue]"
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Environmental services revenue",
                            "terseLabel":  "Revenue",
                            "verboseLabel":  "Total revenues"
                            }
                        }
                    },
                "localname":  "RevenueFromRenderingOfServices",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureRevenueDetails",
                    "http://www.alexcoresource.com/role/DisclosureSegmentedInformationDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RevenueFromRoyalties":  {
                "auth_ref":  [
                    "r11"
                    ],
                "calculation":  {
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss":  {
                        "order":  2.0,
                        "parentTag":  "ifrs-full_ProfitLossBeforeTax",
                        "weight":  1.0
                        }
                    },
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of income arising from royalties."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Royalty income",
                            "terseLabel":  "Gain on sale of net smelter return royalty"
                            }
                        }
                    },
                "localname":  "RevenueFromRoyalties",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RightofuseAssets":  {
                "auth_ref":  [
                    "r170"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of assets that represent a lessee's right to use an underlying asset for the lease term.  Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Right-of-use assets"
                            }
                        }
                    },
                "localname":  "RightofuseAssets",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RightofuseAssetsMember":  {
                "auth_ref":  [
                    "r166"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for right-of-use assets. [Refer:  Right-of-use assets]"
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Right of use assets [Member]"
                            }
                        }
                    },
                "localname":  "RightofuseAssetsMember",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureMineralPropertiesPlantAndEquipmentDetails"
                    ],
                "xbrltype":  "domainItemType"
                },
            "ifrs-full_RiskExposureAssociatedWithInstrumentsSharingCharacteristic":  {
                "auth_ref":  [
                    "r223"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of risk exposure associated with financial instruments with a shared characteristic that identifies a concentration of risks. [Refer:  Financial instruments, class [member]]"
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Risk exposure associated with instruments sharing characteristic",
                            "terseLabel":  "Total exposure",
                            "verboseLabel":  "Net exposure"
                            }
                        }
                    },
                "localname":  "RiskExposureAssociatedWithInstrumentsSharingCharacteristic",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                    "http://www.alexcoresource.com/role/DisclosureFinancialInstrumentsCurrencyRiskDetails"
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_RoyaltyExpense":  {
                "auth_ref":  [
                    "r44"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of expense arising from royalties."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Royalty Expense",
                            "terseLabel":  "Royalty expense"
                            }
                        }
                    },
                "localname":  "RoyaltyExpense",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_SegmentsAxis":  {
                "auth_ref":  [
                    "r81",
                    "r101",
                    "r162",
                    "r231",
                    "r252"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The axis of a table defines the relationship between the members in the table and the line items or concepts that complete the table."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Segments [axis]"
                            }
                        }
                    },
                "localname":  "SegmentsAxis",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                    "http://www.alexcoresource.com/role/DisclosureRevenueDetails",
                    "http://www.alexcoresource.com/role/DisclosureSegmentedInformationDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
                    ],
                "xbrltype":  "stringItemType"
                },
            "ifrs-full_SegmentsMember":  {
                "auth_ref":  [
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                    "r101",
                    "r162",
                    "r236",
                    "r252"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for all segments of an entity.  It also represents the standard value for the 'Segments' axis if no other member is used."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Segments [member]"
                            }
                        }
                    },
                "localname":  "SegmentsMember",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureCostOfSalesDetails",
                    "http://www.alexcoresource.com/role/DisclosureGeneralAndAdministrativeExpensesByNatureOfExpenseDetails",
                    "http://www.alexcoresource.com/role/DisclosureRevenueDetails",
                    "http://www.alexcoresource.com/role/DisclosureSegmentedInformationDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
                    ],
                "xbrltype":  "domainItemType"
                },
            "ifrs-full_SellingGeneralAndAdministrativeExpense":  {
                "auth_ref":  [
                    "r44"
                    ],
                "calculation":  {
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss":  {
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                        "parentTag":  "ifrs-full_OperatingExpense",
                        "weight":  1.0
                        }
                    },
                "crdr":  "debit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of expense relating to selling, general and administrative activities of the entity."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Selling, General and Administrative Expense",
                            "terseLabel":  "Total General and Administrative Expenses",
                            "verboseLabel":  "General and administrative expenses"
                            }
                        }
                    },
                "localname":  "SellingGeneralAndAdministrativeExpense",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
                    "http://www.alexcoresource.com/role/DisclosureGeneralAndAdministrativeExpensesByNatureOfExpenseDetails",
                    "http://www.alexcoresource.com/role/StatementConsolidatedStatementsOfLossAndComprehensiveLoss"
                    ],
                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_ShareIssueRelatedCost":  {
                "auth_ref":  [
                    "r8"
                    ],
                "crdr":  "debit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of cost related to the issuance of shares."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Share issue related cost"
                            }
                        }
                    },
                "localname":  "ShareIssueRelatedCost",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_SharePremium":  {
                "auth_ref":  [
                    "r34"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount received or receivable from the issuance of the entity's shares in excess of nominal value."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Share premium"
                            }
                        }
                    },
                "localname":  "SharePremium",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "monetaryItemType"
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            "ifrs-full_SharebasedPaymentArrangementsMember":  {
                "auth_ref":  [
                    "r187"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "This member stands for an agreement between the entity or another group entity or any shareholder of the group entity and another party (including an employee) that entitles the other party to receive (a) cash or other assets of the entity for amounts that are based on the price (or value) of equity instruments (including shares or share options) of the entity or another group entity; or (b) equity instruments (including shares or share options) of the entity or another group entity, provided that the specified vesting conditions, if any, are met.  It also represents the standard value for the 'Types of share-based payment arrangements' axis if no other member is used."
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                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Share-based payment arrangements [member]"
                            }
                        }
                    },
                "localname":  "SharebasedPaymentArrangementsMember",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesChangesInRsusOutstandingDetails",
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesIncentiveShareOptionsOutstandingDetails",
                    "http://www.alexcoresource.com/role/DisclosureCapitalAndReservesTables"
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                "xbrltype":  "domainItemType"
                },
            "ifrs-full_ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts":  {
                "auth_ref":  [
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                    "r105"
                    ],
                "crdr":  "credit",
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The amount of current provision for decommissioning, restoration and rehabilitation costs. [Refer:  Provision for decommissioning, restoration and rehabilitation costs]"
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Current provision for decommissioning, restoration and rehabilitation costs",
                            "terseLabel":  "Less: current decommissioning and rehabilitation provision"
                            }
                        }
                    },
                "localname":  "ShorttermProvisionForDecommissioningRestorationAndRehabilitationCosts",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                    ],
                "xbrltype":  "monetaryItemType"
                },
            "ifrs-full_SignificantUnobservableInputAssets":  {
                "auth_ref":  [
                    "r150"
                    ],
                "lang":  {
                    "en":  {
                        "role":  {
                            "documentation":  "The value of significant unobservable input used in the measurement of the fair value of assets."
                            }
                        },
                    "en-us":  {
                        "role":  {
                            "label":  "Significant unobservable input, assets"
                            }
                        }
                    },
                "localname":  "SignificantUnobservableInputAssets",
                "nsuri":  "http://xbrl.ifrs.org/taxonomy/2021-03-24/ifrs-full",
                "presentation":  [
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                "xbrltype":  "decimalItemType"
                },
            "ifrs-full_StatementOfCashFlowsAbstract":  {
                "auth_ref":  [
                    ],
                "lang":  {
                    "en-us":  {
                        "role":  {
                            "label":  "CONSOLIDATED STATEMENTS OF CASH FLOWS"
                            }
                        }
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"version":  "2.1"
}

2 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 4/08/22  Alexco Resource Corp.             F-10/A                 2:409K                                   Toppan Merrill/FA
 3/28/22  Alexco Resource Corp.             F-10        3/25/22   12:508K                                   Toppan Merrill/FA
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