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Stock-based compensation (Tables)
 3 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity and Related Information
The following table summarizes the activity for stock options that vest based upon the satisfaction of performance or market conditions for the three months ended June 30, 2020:
 
Options
outstanding
 
Weighted-average exercise price
 
Weighted-average remaining
contractual life
(in years)
 
Aggregate intrinsic
values
(in thousands)
Balance as of March 31, 2020
1,252,932

 
$
7.97

 
 
 
 
Exercised
(27,600
)
 
1.84

 
 
 
 
Balance as of June 30, 2020
1,225,332

 
$
8.07

 
4.7
 
$
15,807

 
 
 
 
 
 
 
 
Exercisable, June 30, 2020
925,332

 
$
1.99

 
4.1
 
$
15,807


The following table summarizes the activity for options that vest solely based upon the satisfaction of a service condition for the three months ended June 30, 2020:
 
Options
outstanding
 
Weighted-average exercise price
 
Weighted-average remaining
contractual life
(in years)
 
Aggregate intrinsic
values
(in thousands)
Balance as of March 31, 2020
1,999,553

 
$
13.17

 
 
 
 

Exercised
(98,970
)
 
3.45

 
 
 
 

Canceled or forfeited
(5,083
)
 
21.61

 
 
 
 

Balance as of June 30, 2020
1,895,500

 
$
13.66

 
6.6
 
$
10,801

 
 
 
 
 
 
 
 
Exercisable, June 30, 2020
1,215,922

 
$
12.77

 
6.0
 
$
8,077
Summary of Activities for Restricted Stock Awards ("RSAs") and Restricted Stock Units ("RSUs")
The following table summarizes the activities for restricted stock awards (“RSAs”) and restricted stock units (“RSUs”) for the three months ended June 30, 2020:
 
Shares of restricted stock outstanding
 
Weighted-average grant date fair value
Balance as of March 31, 2020
2,311,768

 
12.86

Granted
995,650

 
16.75

Vested
(48,991
)
 
14.08

Canceled or forfeited
(56,104
)
 
14.59

Balance as of June 30, 2020
3,202,323

 
14.02