Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v2.4.0.8
Document and Entity Information
9 Months Ended
Dec. 31, 2013
Jan. 31, 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   248,631,352
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2013  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2014