Amount of estimated price adjustments that are expected to be incurred by the acquiring entity. Excludes cash.

No definition available.

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

- Definition

Amount of consideration transferred excluding working capital deficiency acquired, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

No definition available.

+ Details

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

- Definition

Represent the percentage of the acquiree subject to put and call option not exercised in period in a business combination.

+ References

No definition available.

+ Details

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

- Definition

Amount of working capital deficiency assumed at the acquisition date.

+ References

No definition available.

+ Details

Name:	tcx_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedWorkingCapitalDeficiency
Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
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-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

+ Details

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

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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

- 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:	duration

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585

+ Details

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

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=tcx_BrandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_OwnershipAxis=tcx_TingVirginiaLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	srt_StatementScenarioAxis=tcx_ExercisableByTheMinorityShareholdersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=tcx_eNomIncorporatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=tcx_TechnologyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=tcx_AscioTechnologiesIncMember
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Note 3 - Acquisitions (Details Textual) - USD ($) $ in Thousands						12 Months Ended
	Mar. 18, 2019	Feb. 13, 2018	Feb. 01, 2017	Jan. 20, 2017	Feb. 27, 2015	Dec. 31, 2019	Dec. 31, 2017
Brand [Member]
Finite-Lived Intangible Asset, Useful Life						7 years
Ting Virginia LLC [Member]
Business Combination, Consideration Transferred, Total		$ 1,200
Payments for Repurchase of Redeemable Noncontrolling Interest		$ 1,200
Repurchase of Redeemable Noncontrolling Interest, Percentage		10.00%
Ting Virginia LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired			20.00%		70.00%
Business Combination, Consideration Transferred, Total			$ 2,000		$ 3,500
Ting Virginia LLC [Member] \| Exercisable by the Minority Shareholders [Member]
Business Combination, Interest Subject to Call Option, Not Exercised in Period			10.00%
eNom, Incorporated [Member]
Business Combination, Consideration Transferred, Total				$ 77,832
Payments to Acquire Businesses, Gross				83,500
Business Combination, Consideration Transferred, Estimated Price Adjustments				$ 5,700
eNom, Incorporated [Member] \| Brand [Member]
Finite-Lived Intangible Asset, Useful Life				7 years
eNom, Incorporated [Member] \| Technology [Member]
Finite-Lived Intangible Asset, Useful Life				2 years
eNom, Incorporated [Member] \| Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life				7 years
eNom, Incorporated [Member] \| General and Administrative Expense [Member]
Business Combination, Acquisition Related Costs							$ 300
Ascio Technologies, Inc. [Member]
Business Combination, Consideration Transferred, Total	$ 29,886
Business Combination, Acquisition Related Costs	$ 500
Finite-Lived Intangible Asset, Useful Life	7 years
Business Combination, Consideration Transferred, Excluding Working Capital Deficiency Acquired	$ 29,440
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital Deficiency	$ 450
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual						$ 17,400
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual						1,700
Ascio Technologies, Inc. [Member] \| General and Administrative Expense [Member]
Business Combination, Acquisition Related Costs						$ 300