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Note 12 - Leases (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2019 | Jan. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
Lessee, Operating Lease, Renewal Term | 5 years | 5 years |  |  |
Lessee, Operating Lease, Option to Terminate Term | 1 year |  |  |  |
Lessee, Operating Lease, Option to Extend, Amount |  | $ 2,400 |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Future Minimum Payments Due | $ 100 | 100 |  |  |
Operating Lease, Right-of-Use Asset | 12,206 | 12,206 | $ 4,600 | $ 8,800 |
Operating Lease, Liability, Total | $ 11,710 | $ 11,710 | $ 4,600 | $ 8,300 |
Minimum [Member] |  |  |  |  |
Operating Lease, Remaining Lease Term |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |
Operating Lease, Remaining Lease Term |  | 19 years |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract | 1 year | 1 year |  |  |

X
- Definition Amount of required minimum rental payments for lessee's operating lease that has not yet commenced. + References No definition available. + Details
Name: | tcx_LesseeOperatingLeaseLeaseNotYetCommencedFutureMinimumPaymentsDue
Namespace Prefix: | tcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability. + References No definition available. + Details
Name: | tcx_LesseeOperatingLeaseOptionToExtendAmount
Namespace Prefix: | tcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Term of lessee's operating lease option to terminate lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | tcx_LesseeOperatingLeaseOptionToTerminateTerm
Namespace Prefix: | tcx_
Data Type: | xbrli:durationItemType
Balance Type: | na
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X
- Definition Remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | tcx_
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Balance Type: | na
Period Type: | duration

X
- Definition Term of lessee's operating lease not yet commenced, 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 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease renewal, 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 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |