Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.8
Document and Entity Information
6 Months Ended
Jun. 30, 2013
Jul. 31, 2013
Document and Entity Information [Abstract]    
Entity Registrant Name STAMPS.COM INC  
Entity Central Index Key 0001082923  
Current Fiscal Year End Date --12-31  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   0
Document Fiscal Year Focus 2013  
Document Fiscal Period Focus Q2  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2013