Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Stock Option Activity (Detail)

v3.19.1
Equity - Summary of Stock Option Activity (Detail)
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Number of shares  
Options outstanding at December 31, 2018 | shares 6,839,417
Options granted | shares 688,084
Less:  
Options exercised | shares 635,257
Options canceled or expired | shares 2,500
Options outstanding at March 31, 2019 | shares 6,889,744
Exercisable at March 31, 2019 | shares 2,584,373
Weighted Average Exercise Price  
Weighted average exercise price, beginning balance (in dollars per share) | $ / shares $ 7.63
Weighted average exercise price, granted (in dollars per share) | $ / shares 19.12
Less:  
Weighted average exercise price, exercised (in dollars per share) | $ / shares 6.23
Weighted average exercise price, canceled or expired (in dollars per share) | $ / shares 8.04
Weighted average exercise price, ending balance (in dollars per share) | $ / shares 8.84
Weighted average exercise price, exercisable, ending balance (in dollars per share) | $ / shares $ 6.84