XML 83 R70.htm IDEA: XBRL DOCUMENT v3.21.1
11. STOCK-BASED COMPENSATION - Stock option activities (Details) - USD ($)
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
STOCK-BASED COMPENSATION      
Shares available for grant, Beginning 2,522,314 3,426,548 4,444,301
Granted (in shares) (1,285,252) (1,011,708) (1,097,893)
Forfeited (in shares) 94,500 107,474 80,140
Shares available for grant, Ending 1,331,562 2,522,314 3,426,548
Number of Shares Underlying Options Outstanding      
Balance at the beginning of the period (in shares) 8,135,791 8,017,029 7,874,267
Granted (in shares) 1,285,252 1,011,708 1,097,893
Exercised (in shares) (667,503) (772,667) (823,456)
Forfeited (in shares) (320,663) (120,279) (131,675)
Balance at the end of the period (in shares) 8,432,877 8,135,791 8,017,029
Options vested and exercisable (in shares) 5,234,179    
Options vested and expected to vest (in shares) 8,350,591    
Weighted Average Remaining Contractual Life      
Options weighted average remaining contractual life 5 years 7 months 17 days    
Options vested and exercisable 4 years    
Options vested and expected to vest 5 years 7 months 6 days    
Weighted Average Exercise Price      
Balance at the beginning of the period (in dollars per share) $ 6.17 $ 5.77 $ 5.45
Granted (in dollars per share) 6.46 8.11 6.74
Exercised (in dollars per share) 5.99 4.39 4.00
Forfeited (in dollars per share) 7.84 7.03 5.60
Balance at the end of the period (in dollars per share) 6.17 $ 6.17 $ 5.77
Options vested and exercisable (in dollars per share) 5.63    
Options vested and expected to vest (in dollars per share) $ 6.16    
Intrinsic Value      
Exercised (in dollars) $ 961,633 $ 2,614,879 $ 2,782,691
Options vested and exercisable (in dollars) 6,186,222    
Options vested and expected to vest (in dollars) $ 6,862,744