v3.25.4
Document And Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 10, 2026
Jun. 30, 2025
Document Information [Line Items]      
Entity Central Index Key 0000909494    
Entity Registrant Name TUCOWS INC /PA/    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
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] true    
Document Financial Statement Restatement Recovery Analysis [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 132,200,000
Entity Common Stock, Shares Outstanding   11,128,972  
Auditor Name Deloitte LLP    
Auditor Location Toronto, Canada    
Auditor Firm ID 1208