Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Stock Options Available for Grant (Detail)

v3.7.0.1
Stock-Based Compensation - Summary of Stock Options Available for Grant (Detail) - shares
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Shares Available for Grant, Beginning balance 28,418,808 24,754,902
Granted (1,179,994) (1,410,560)
New Shares Authorized   5,000,000
Forfeitures Available for Re-grant   74,466
Shares Available for Grant, Ending balance 27,238,814 28,418,808