Annual report pursuant to Section 13 and 15(d)

Capital Stock Transactions - Summary of Non-Vested Restricted Stock Awards and Activities (Detail)

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Capital Stock Transactions - Summary of Non-Vested Restricted Stock Awards and Activities (Detail) - Non Vested Restricted Stock - $ / shares
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Number of shares    
Non-vested restricted stock number of shares beginning balance 642,343 1,365,010
Granted 233,928 267,195
Vested (288,220) (981,731)
Cancelled (478,005) (8,131)
Non-vested restricted stock number of shares ending balance 110,046 642,343
Weighted average exercise price    
Non-vested restricted stock weighted average grant date fair value beginning balance $ 3.04 $ 3.22
Granted 1.47 3.60
Vested 2.97 3.48
Cancelled 2.82 3.31
Non-vested restricted stock weighted average grant date fair value ending balance $ 1.45 $ 3.04