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Note 13 - Common Shares (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Share Repurchases [Table Text Block] |
|  | Year Ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Common stock repurchased on the open market or through tender offer |  |  |  |  |  |  |  |  |  |  |  |
Number of shares |  |  | 101,816 |  |  |  | - |  |  |  | - |
Aggregate market value of shares (in thousands) |  | $ | 4,986 |  |  | $ | - |  |  | $ | - |
Average price per share |  | $ | 48.97 |  |  | $ | - |  |  | $ | - |
Common stock received in connection with share-based compensation |  |  |  |  |  |  |  |  |  |  |  |
Number of shares |  |  | 21,332 |  |  |  | 19,777 |  |  |  | 50,454 |
Aggregate market value of shares (in thousands) |  | $ | 1,510 |  |  | $ | 1,138 |  |  | $ | 2,602 |
Average price per share |  | $ | 70.77 |  |  | $ | 57.56 |  |  | $ | 51.58 |

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- Definition The entire disclosure for share repurchases. + References No definition available. + Details
Name: | tcx_ShareRepurchasesTableTextBlock
Namespace Prefix: | tcx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration