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Note 2 - Significant Accounting Policies - Summary of Property, Plant and Equipment Depreciation Rates (Details) | 12 Months Ended
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Dec. 31, 2024
Minimum [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years
Maximum [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years
Computer Equipment [Member] |
Depreciation Rate | 30.00%
Computer Software [Member] | Maximum [Member] |
Depreciation Rate | 100.00%
Furniture and Fixtures [Member] |
Depreciation Rate | 20.00%
Vehicles and Tools [Member] |
Depreciation Rate | 20.00%
Fiber Network [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years
Customer Equipment and Installations [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 3 years
Capitalized Internal Use Software [Member] | Minimum [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 3 years
Capitalized Internal Use Software [Member] | Maximum [Member] |
Finite-Lived Intangible Asset, Useful Life (Year) | 7 years

X
- Definition Represents depreciation rate. + References No definition available. + Details
Name: | tcx_DepreciationRate
Namespace Prefix: | tcx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=tcx_ComputerSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=tcx_VehiclesAndToolsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=tcx_FiberNetworkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=tcx_CustomerEquipmentAndInstallationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=tcx_CapitalizedInternalUseSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |