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Note 11 - Costs to Obtain and Fulfill a Contract - Capitalized Contract Costs Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Amortized expense included in cost of revenue | $ (16) | $ 255 | $ (136) | $ 612
Domain Registration Costs [Member] |  |  |  |
Balance |  |  | 111,068 |
Deferral of costs |  |  | 138,514 |
Amortized expense included in cost of revenue |  |  | (133,353) |
Balance | $ 116,229 |  | $ 116,229 |

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- Definition Amount of increase in capitalized contract cost from deferred revenue. + References No definition available. + Details
Name: | tcx_CapitalizedContractCostIncreaseFromDeferredRevenue
Namespace Prefix: | tcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479483/340-40-50-3 + Details
Name: | us-gaap_CapitalizedContractCostAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479483/340-40-50-3 + Details
Name: | us-gaap_CapitalizedContractCostNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_CapitalizedContractCostAxis=tcx_DomainRegistrationCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |