Document and Entity Information
9 Months Ended
Jun. 29, 2013
Document and Entity Information [Abstract]  
Entity Registrant Name SEVCON, INC.
Entity Central Index Key 0000825411
Current Fiscal Year End Date --09-30
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Smaller Reporting Company
Entity Common Stock, Shares Outstanding 0
Document Fiscal Year Focus 2013
Document Fiscal Period Focus Q3
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 29, 2013