v3.8.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2017
Nov. 03, 2017
Document and Entity Information    
Entity Registrant Name TACTILE SYSTEMS TECHNOLOGY INC  
Entity Central Index Key 0001027838  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2017  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2017  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   17,701,786