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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2024
Feb. 14, 2025
Jun. 28, 2024
Document and Entity Information      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2024    
Document Transition Report false    
Entity File Number 001-37799    
Entity Registrant Name Tactile Systems Technology, Inc.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 41-1801204    
Entity Address, Address Line One 3701 Wayzata Blvd, Suite 300    
Entity Address, City or Town Minneapolis    
Entity Address, State or Province MN    
Entity Address, Postal Zip Code 55416    
City Area Code 612    
Local Phone Number 355-5100    
Title of 12(b) Security Common Stock, Par Value $0.001 Per Share    
Trading Symbol TCMD    
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     $ 283,247,975
Entity Common Stock, Shares Outstanding   23,585,175  
Entity Central Index Key 0001027838    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2024    
Document Fiscal Period Focus FY    
Amendment Flag false    
Auditor Name GRANT THORNTON LLP    
Auditor Firm ID 248    
Auditor Location Minneapolis, Minnesota