Quarterly report pursuant to Section 13 or 15(d)

DOCUMENT AND ENTITY INFORMATION

v3.19.3
DOCUMENT AND ENTITY INFORMATION - shares
6 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Document and Entity Information [Abstract]    
Entity Registrant Name QUANTUM CORP /DE/  
Entity Central Index Key 0000709283  
Current Fiscal Year End Date --03-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Document Type 10-Q  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   36,941,906