v3.19.2
Document and Entity Information - shares
3 Months Ended
May 04, 2019
Jun. 05, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name Ollie's Bargain Outlet Holdings, Inc.  
Entity Central Index Key 0001639300  
Current Fiscal Year End Date --02-01  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   63,483,898
Document Type 10-Q  
Amendment Flag false  
Document Period End Date May 04, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1