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Note 19 - Subsequent Events (Details Textual) $ / shares in Units, $ in Millions	Aug. 08, 2022 USD ($) $ / shares shares	Sep. 30, 2023	Mar. 31, 2023	Mar. 30, 2023	Aug. 31, 2022	Jun. 28, 2022	Oct. 26, 2021 USD ($)	Jun. 14, 2019 USD ($)
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member]
Maximum Total Funded Debt to EBITDA Ratio						4.50
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Forecast [Member]
Maximum Total Funded Debt to EBITDA Ratio		3.75	4.00	4.50	5.00
Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Guaranteed Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity							$ 180	$ 240
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member]
Maximum Total Funded Debt to EBITDA Ratio	4.00
Minimum Interest Coverage Ratio	3.00
Debt Instrument, SOFR Floor	0.00%
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Adjusted One Month SOFR [Member]
Debt Instrument, Basis Spread on Variable Rate	0.10%
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Adjusted Three Month SOFR [Member]
Debt Instrument, Basis Spread on Variable Rate	0.15%
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Adjusted Six Month SOFR [Member]
Debt Instrument, Basis Spread on Variable Rate	0.25%
Subsequent Event [Member] | Royal Bank, Bank of Montreal, Bank of Nova Scotia, HSBC and CIBC [Member] | Guaranteed Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 240
Series A Preferred Unit Purchase Agreement [Member] | Subsequent Event [Member]
Unit Purchase Agreement, Maximum Units (in shares) | shares	10,000,000
Unit Purchase Agreement, Price Per Unit (in dollars per share) | $ / shares	$ 6.00
Unit Purchase Agreement, Conditional Additional Units (in shares) | shares	23,333,333.34
Unit Purchase Agreement, Investment	$ 60
Unit Purchase Agreement, Investment Payable	$ 140
Unit Purchase Agreement, Standby Fee Percentage	0.50%
Unit Purchase Agreement, Interest, Percent	15.00%
ECC Agreement [Member] | Subsequent Event [Member]
Equity Contribution Agreement, Commitment	$ 400
ECC Agreement [Member] | Subsequent Event [Member] | Minimum [Member]
Unit Purchase Agreement, Interest, Percent	13.00%
ECC Agreement [Member] | Subsequent Event [Member] | Maximum [Member]
Unit Purchase Agreement, Interest, Percent	17.00%

X

- Definition

The SOFR floor of the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
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Balance Type:	na
Period Type:	instant

X

- Definition

The amount of commitment under equity contribution agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Ratio of total funded debt to EDITDA that triggers obligation to repay 50% of excess cash flow as defined under the credit agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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X

- Definition

The amount of minimum interest coverage ratio.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

the number of additional units to be sold under unit purchase agreement upon certain conditions.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percent interest under unit purchase agreement.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- Definition

The investment from unit purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of investment payable under unit purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The maximum number of units to be sold under unit purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The price per unit of units to be sold under unit purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The standby fee percentage to be paid under unit purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Period Type:	instant

X

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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