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Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2022
Mar. 13, 2023
Jun. 30, 2021
Document Information [Line Items]      
Entity Central Index Key 0000909494    
Entity Registrant Name TUCOWS INC /PA/    
Amendment Flag true    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2022    
Document Type 10-K/A    
Document Annual Report true    
Document Period End Date Dec. 31, 2022    
Document Transition Report false    
Entity File Number 001-32600    
Entity Incorporation, State or Country Code PA    
Entity Tax Identification Number 23-2707366    
Entity Address, Address Line One 96 Mowat Avenue    
Entity Address, City or Town Toronto    
Entity Address, State or Province ON    
Entity Address, Country CA    
Entity Address, Postal Zip Code M6K 3M1    
City Area Code 416    
Local Phone Number 535-0123    
Title of 12(b) Security Common stock, no par value    
Trading Symbol TCX     
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 283,900,000
Entity Common Stock, Shares Outstanding   10,829,711  
Amendment Description We filed our Annual Report on Form 10-K for the fiscal year ended December 31, 2022 with the Securities and Exchange Commission (“SEC”) on March 15, 2023 (the “Original Filing”). This Amendment No. 1 on Form 10-K/A (this “Amendment”) is being filed solely to amend Part II, Item 8, “Report of Independent Registered Public Accounting Firm” of the Original Filing to correct a typographical error within KPMG LLP’s (“KPMG”) report of independent registered public accounting firm on our consolidated financial statements (the “Audit Opinion”). This Amendment corrects the typographical error in the Audit Opinion by replacing the reference from “unqualified” to “adverse” when referencing the opinion on the effectiveness of the Company’s internal control over financial reporting.  There were no changes to KPMG’s report of independent registered public accounting firm on the effectiveness of the Company’s internal control over financial reporting.   For convenience, we are refiling the entire Annual Report on Form 10-K, as amended, including an updated consent by KPMG in Exhibit 23.1 and new certifications by our principal executive officer and principal financial officer, which are being filed as Exhibits 31.1, 31.2, 32.1 and 32.2 to this Amendment.   Except as described above, no other changes to the Original Filing are included in this Amendment. This Amendment speaks only as of the date of the Original Filing, and the Amendment does not modify or update the disclosures presented in the Original Filing other than as noted above, and does not reflect events occurring after the Original Filing.    
Auditor Name KPMG LLP    
Auditor Location Toronto, Ontario    
Auditor Firm ID 85