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Note 4 - Derivative Instruments and Hedging Activities - Foreign Currency Forward Contracts (Details)	Mar. 31, 2017 USD ($)
Notional amount of U.S. dollars	$ 20,249,559
Weighted average exchange rate of U.S. dollars	1.3494
Fair value	$ 356,525
Foreign Exchange Forward 1 [Member]
Notional amount of U.S. dollars	$ 6,461,047
Weighted average exchange rate of U.S. dollars	1.3512
Fair value	$ 113,277
Foreign Exchange Forward 2 [Member]
Notional amount of U.S. dollars	$ 6,928,942
Weighted average exchange rate of U.S. dollars	1.3494
Fair value	$ 121,356
Foreign Exchange Forward 3 [Member]
Notional amount of U.S. dollars	$ 6,859,570
Weighted average exchange rate of U.S. dollars	1.3478
Fair value	$ 121,892

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Average contractual rate at which a foreign currency can be purchased or sold.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

+ Details

Name:	us-gaap_ForeignCurrencyContractsLiabilityFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=tcx_ForeignExchangeForward2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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