Quarterly report pursuant to Section 13 or 15(d)

Description of Stock Plans - Intrinsic Value of Options Exercised and Fair Value of Options Vested (Detail)

v3.5.0.2
Description of Stock Plans - Intrinsic Value of Options Exercised and Fair Value of Options Vested (Detail) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Total fair value of options vested $ 2,452 $ 2,847
Total intrinsic value of options exercised $ 8 $ 110