The maximum aggregate amount can be held in an account with certain bank pursuant to a credit agreement.

No definition available.

Name:	tcx_CreditMaximumAggregateAmountHeldInAccountWithCertainBank
Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of domain names transfered to a counter party in order to settle a ligation case.

+ References

No definition available.

+ Details

Name:	tcx_DomainNameTransferToCounterPartyToSettleALitigationCase
Namespace Prefix:	tcx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cost of revenue related to previously deferred revenue and deferred prepaid registry fees recognized resulted from a litigation settlement.

+ References

No definition available.

+ Details

Name:	tcx_LitigationSettlementCostOfRevenuesRecognizedPreviouslyDeferredRevenueAndDeferredPrepaidRegistryFees
Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of revenue related to previously deferred revenue and deferred prepaid registry fees recognized resulted from a litigation settlement.

+ References

No definition available.

+ Details

Name:	tcx_LitigationSettlementRevenueRecognizedPreviouslyDeferredRevenueAndDeferredPrepaidRegistryFees
Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of redeemable noncontrolling interest that would be purchased during the period.

+ References

No definition available.

+ Details

Name:	tcx_RepurchaseOfRedeemableNoncontrollingInterestPercentage
Namespace Prefix:	tcx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period for redemption of redeemable noncontrolling interests.

+ References

No definition available.

+ Details

Name:	us-gaap_PaymentsForRepurchaseOfRedeemableNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_OwnershipAxis=tcx_TingVirginiaLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareRepurchaseProgramAxis=tcx_StockBuybackProgram2018Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=tcx_SecondInterimAmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationCaseAxis=tcx_LitigationCaseWithNamecheapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 17 - Subsequent Events (Details Textual) $ in Millions		3 Months Ended
Note 17 - Subsequent Events (Details Textual) $ in Millions	Feb. 13, 2018 USD ($)	Mar. 31, 2018 USD ($)	Feb. 14, 2018 USD ($)	Jan. 24, 2018 USD ($)	Jan. 16, 2018	Jan. 05, 2018
Subsequent Event [Member] \| Ting Virginia LLC [Member]
Repurchase of Redeemable Noncontrolling Interest, Percentage	10.00%
Payments for Repurchase of Redeemable Noncontrolling Interest	$ 1.2
Subsequent Event [Member] \| Stock Buyback Program 2018 [Member]
Stock Repurchase Program, Authorized Amount			$ 40.0
Subsequent Event [Member] \| Second Interim Amendment [Member]
Credit Agreement, Maximum Aggregate Amount Held in Account With Certain Bank				$ 3.0
Litigation Case with Namecheap [Member] \| Scenario, Forecast [Member]
Litigation Settlement, Revenue Recognized, Previously Deferred Revenue and Deferred prepaid Registry Fees		$ 14.6
Litigation Settlement, Cost of Revenues Recognized, Previously Deferred Revenue and Deferred prepaid Registry Fees		$ 14.5
Litigation Case with Namecheap [Member] \| Subsequent Event [Member]
Domain Name Transfer to Counter Party to Settle a Litigation Case					2,650,000	2,650,000