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Note 19 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) | Feb. 14, 2019 | Feb. 13, 2019 | Jan. 01, 2019
--- | --- | --- | ---
Operating Lease, Liability, Total |  |  | $ 7,400,000
Stock Buyback Program 2019 [Member] |  |  |
Stock Repurchase Program, Authorized Amount | $ 40,000,000 | $ 40,000,000 |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=tcx_StockBuybackProgram2019Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |