Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.8
Document and Entity Information
3 Months Ended
Jun. 30, 2014
Aug. 01, 2014
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 Accelerated Filer  
Trading Symbol QTM  
Entity Common Stock, Shares Outstanding   253,840,119
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2014  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2015