v3.19.2
Document And Entity Information - shares
3 Months Ended
May 04, 2019
Jun. 10, 2019
Document Information [Line Items]    
Entity Registrant Name BUILD A BEAR WORKSHOP INC  
Entity Central Index Key 0001113809  
Trading Symbol bbw  
Current Fiscal Year End Date --02-01  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Common Stock, Shares Outstanding (in shares)   15,130,418
Document Type 10-Q  
Document Period End Date May 04, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Amendment Flag false