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Note 2 - Basis of Presentation (Details Textual) $ in Millions | 3 Months Ended
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Mar. 31, 2017 USD ($)
Decrease in Net Revenues and Sales and Marketing Expense [Member] | Three Months Ended March 31, 2016 [Member] |
Prior Period Reclassification Adjustment | $ 0.9

X
- Definition The amount of a reclassification adjustment made to prior period financial statement amounts. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_CreationDateAxis=tcx_ThreeMonthsEndedMarch312016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |