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Note 12 - Costs to Obtain and Fulfill a Contract (Details Textual) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended
	Mar. 18, 2019	Mar. 31, 2019	Jun. 30, 2019
Ascio Technologies, Inc. [Member]
Capitalized Contract Cost, Amortization			$ 82,900
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets	$ 9,256
Finite-Lived Intangible Asset, Useful Life	7 years
Deferred Costs of Acquisition [Member]
Increase (Decrease) in Capitalized Costs			$ 83,000
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Minimum [Member] | Ascio Technologies, Inc. [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Minimum [Member] | Deferred Costs of Acquisition [Member]
Capitalized Contract Cost, Amortization Period			1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		15 years
Maximum [Member] | Ascio Technologies, Inc. [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Maximum [Member] | Deferred Costs of Acquisition [Member]
Capitalized Contract Cost, Amortization Period			10 years

X

- Definition

Amount of increase (decrease) in capitalization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
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Balance Type:	debit
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X

- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472

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X

- 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054

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X

- Definition

Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 340
-SubTopic 40
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054

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- 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

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Namespace Prefix:	us-gaap_
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- Details

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