Annual report pursuant to Section 13 and 15(d)

STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Narrative) (Details)

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STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION (Narrative) (Details) (USD $)
12 Months Ended 36 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2014
Minimum [Member]
Mar. 31, 2014
Maximum [Member]
Mar. 31, 2014
Stock Options [Member]
Mar. 31, 2013
Stock Options [Member]
Mar. 31, 2012
Stock Options [Member]
Mar. 31, 2014
Stock Options [Member]
Pancetera [Member]
Mar. 31, 2014
Stock Options [Member]
Minimum [Member]
Mar. 31, 2014
Stock Options [Member]
Minimum [Member]
Pancetera [Member]
Mar. 31, 2014
Stock Options [Member]
Maximum [Member]
Mar. 31, 2014
Stock Options [Member]
Maximum [Member]
Pancetera [Member]
Mar. 31, 2014
Restricted Stock [Member]
Mar. 31, 2014
Performance RSUs [Member]
Mar. 31, 2014
Market RSUs [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Mar. 31, 2013
Long Term Incentive Plan 2012 [Member]
Maximum [Member]
Mar. 31, 2012
Long Term Incentive Plan 2012 [Member]
Director Stock Options [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Market RSUs [Member]
Vesting Date One [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Market RSUs [Member]
Vesting Date Two [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Market RSUs [Member]
Vesting Date Three [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Market RSUs [Member]
Maximum [Member]
Mar. 31, 2014
Long Term Incentive Plan 2012 [Member]
Restricted Stock Units [Member]
Jun. 13, 2011
Other Stock Incentive Plans [Member]
Pancetera [Member]
Mar. 31, 2014
Other Stock Incentive Plans [Member]
Stock Options [Member]
Jun. 13, 2011
Other Stock Incentive Plans [Member]
Stock Options [Member]
Pancetera [Member]
Mar. 31, 2014
Other Stock Incentive Plans [Member]
Stock Options [Member]
Minimum [Member]
Mar. 31, 2014
Other Stock Incentive Plans [Member]
Stock Options [Member]
Maximum [Member]
Jun. 13, 2011
Other Stock Incentive Plans [Member]
Restricted Stock [Member]
Pancetera [Member]
Mar. 31, 2014
Other Stock Incentive Plans [Member]
Restricted Stock [Member]
Minimum [Member]
Mar. 31, 2014
Other Stock Incentive Plans [Member]
Restricted Stock [Member]
Maximum [Member]
Mar. 31, 2014
Stock Purchase Plan [Member]
Mar. 31, 2013
Stock Purchase Plan [Member]
Mar. 31, 2012
Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                                      
Total shares authorized                                 34,100,000                               57,800,000    
Shares available for grant                                 14,100,000                               1,900,000    
Stock options and restricted shares outstanding                                 19,400,000                                    
Number of shares granted, stock awards 8,280,000 5,514,000 6,669,000                       200,000 800,000                                      
Fair value at the grant date                             $ 200,000 $ 700,000                                      
Pricing model used in estimating grant-date fair value           Black-Scholes                   Monte-Carlo                                      
Expected volatility rate                 112.33% 100.93%             66.00%                                 43.71% 69.73% 70.29%
Risk free interest rate                 1.57% 1.65%             0.50%                                 0.07% 0.13% 0.06%
Expected term                 4 years 5 years 2 months 12 days                     10 months 22 months 34 months                     6 months 6 months 6 months
Vesting period                                     1 year       2 years 3 years       1 year 4 years   1 year 3 years      
Stock options granted contractual terms                     7 years   10 years                                            
Unvested stock options outstanding                                                 194,000   800,000     500,000          
Exchange ratio                                                 0.2403                    
Unvested restricted shares of Quantum common stock                                                 33,000                    
Cash held in escrow                                                 200,000                    
Expiration period                                                   10 years                  
Expiration date                   Apr. 01, 2014   Jun. 30, 2021           Apr. 30, 2018                     Jun. 30, 2021            
Discount on market price to purchase stock                                                                 15.00%    
Shares issued                                                                 55,900,000    
Maximum amount of shares to be purchased in any offering period                                                                 2,000,000    
Duration of offering periods                                                                 6 months    
Number of shares purchased                                                                 3,200,000 3,800,000 3,000,000
Weighted-average price of stock purchased                                                                 $ 1.07 $ 1.17 $ 1.66
Unrecognized compensation cost           700,000               13,700,000                                          
Weighted-average period for recognition           1 year               1 year 8 months 12 days                                          
Total intrinsic value of options exercised 400,000 300,000 3,700,000                                                                
Fair value of awards released $ 6,200,000 $ 7,400,000 $ 9,400,000                                                                
Prices for stock options exercised       $ 0.11 $ 3.10