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Note 18 - Other Income (Expense) - Other Income (Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Total other income	$ 2,915	$ 3,919	$ 8,722	$ 11,373
Purchase Agreement With DISH Wireless LLC [Member]
Income earned on sale of transferred assets	3,020	3,853	8,873	10,831
Equity in (earnings) losses of unconsolidated businesses	(105)	66	(151)	542
Total other income	$ 2,915	$ 3,919	$ 8,722	$ 11,373

X

- Definition

Represents the equity in undistributed earnings of subsidiaries.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of income from a purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tcx_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Amount of income (expense) related to nonoperating activities, classified as other.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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