• Filing Date: 2020-01-29
  • Form Type: 10-Q
  • Description: Quarterly report
v3.19.3.a.u2
DOCUMENT AND ENTITY INFORMATION - shares
9 Months Ended
Dec. 31, 2019
Jan. 27, 2020
Document and Entity Information [Abstract]    
Entity Registrant Name QUANTUM CORP /DE/  
Entity Central Index Key 0000709283  
Current Fiscal Year End Date --03-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Document Type 10-Q  
Document Period End Date Dec. 31, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   39,858,691