Document and Entity Information
9 Months Ended
Sep. 30, 2012
Oct. 26, 2012
Document and Entity Information [Abstract]    
Entity Registrant Name IMMERSION CORP  
Entity Central Index Key 0001058811  
Document Type 10-Q  
Document Period End Date Sep. 30, 2012  
Amendment Flag false  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   27,273,391