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Note 4 - Property and Equipment (Details Textual) $ in Millions | 12 Months Ended
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Dec. 31, 2017 USD ($)
Property, Plant and Equipment, Fully Depreciated Writedown | $ 0.1

X
- Definition The cost of property, plant and equipment written off during the period due to being fully depreciated. + References No definition available. + Details
Name: | tcx_PropertyPlantAndEquipmentFullyDepreciatedWritedown
Namespace Prefix: | tcx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration