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Note 2 - Basis of Presentation (Details Textual) $ in Millions	3 Months Ended
	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

X

- 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: