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Note 7 - Loan Payable - Schedule of Standby Fees Based on Total Funded Debt to EBITDA Ratio (Details)	3 Months Ended
	Mar. 31, 2018
Debt to EBITDA is Less Than 1 [Member]
Standby fees	0.40%
Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member]
Standby fees	0.45%
Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.25 [Member]
Standby fees	0.55%
Debt to EBITDA is Greater Than or Equal to 2.25 [Member]
Standby fees	0.65%
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Less Than 1 [Member]
Basis Spread on Variable Rate	2.00%
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member]
Basis Spread on Variable Rate	2.25%
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.25 [Member]
Basis Spread on Variable Rate	2.75%
Bank of Montreal and Royal Bank of Canada [Member] | London Interbank Offered Rate (LIBOR) [Member] | Debt to EBITDA is Greater Than or Equal to 2.25 [Member]
Basis Spread on Variable Rate	3.25%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Less Than 1 [Member]
Basis Spread on Variable Rate	0.75%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 1 and Less Than 2 [Member]
Basis Spread on Variable Rate	1.00%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2 and Less Than 2.25 [Member]
Basis Spread on Variable Rate	1.50%
Bank of Montreal and Royal Bank of Canada [Member] | Base Rate [Member] | Debt to EBITDA is Greater Than or Equal to 2.25 [Member]
Basis Spread on Variable Rate	2.00%

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

Name:	us-gaap_DebtInstrumentAxis=tcx_DebtToEBITDAIsGreaterThanOrEqualTo1AndLessThan2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=tcx_DebtToEbitdaIsGreaterThanOrEqualTo2AndLessThan225Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=tcx_DebtToEbitdaIsGreaterThanOrEqualTo225Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=tcx_BankOfMontrealAndRoyalBankOfCanadaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: