Document And Entity Information
6 Months Ended
Jul. 02, 2011
Aug. 03, 2011
Document and Entity Information [Abstract]    
Entity Registrant Name BUILD A BEAR WORKSHOP INC  
Document Type 10-Q  
Current Fiscal Year End Date --01-01  
Entity Common Stock, Shares Outstanding   19,076,347
Amendment Flag false  
Entity Central Index Key 0001113809  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Accelerated Filer  
Entity Well-known Seasoned Issuer No  
Document Period End Date Jul. 02, 2011  
Document Fiscal Year Focus 2011  
Document Fiscal Period Focus Q2