Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Sep. 30, 2017
Nov. 22, 2017
Apr. 01, 2017
Document and Entity Information [Abstract]      
Entity Registrant Name MTS SYSTEMS CORP    
Entity Central Index Key 0000068709    
Current Fiscal Year End Date --09-30    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Sep. 30, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   17,777,251  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 1.0