Document And Entity Information
3 Months Ended
Mar. 29, 2014
May 02, 2014
Document and Entity Information [Abstract]    
Entity Registrant Name BUILD A BEAR WORKSHOP INC  
Document Type 10-Q  
Current Fiscal Year End Date --12-28  
Entity Common Stock, Shares Outstanding   17,477,869
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 Mar. 29, 2014  
Document Fiscal Year Focus 2014  
Document Fiscal Period Focus Q1