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Stockholders' Equity - Stock Options (Details) - Stock Options
12 Months Ended
Mar. 31, 2016
Approved_Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of stockholder-approved plans 2
Number of plans unapproved by stockholders 1
Vesting period, in years 4 years
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period, in years 8 years
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration period, in years 10 years