v3.19.1
Document and Entity Information - shares
3 Months Ended
May 04, 2019
May 15, 2019
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date May 04, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Trading Symbol DXLG  
Entity Registrant Name DESTINATION XL GROUP, INC.  
Entity Central Index Key 0000813298  
Current Fiscal Year End Date --02-01  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   49,865,550