Quarterly report pursuant to Section 13 or 15(d)

Equity Incentive Plans - Schedule of Stock Option Activity (Details)

v3.19.2
Equity Incentive Plans - Schedule of Stock Option Activity (Details) - 2005 Plan and 2017 Plan
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Number of Options Outstanding, Beginning Balance | shares 820,186
Number of Options Outstanding, Granted | shares 79,868
Number of Options Outstanding, Exercised | shares (243,368)
Number of Options Outstanding, Canceled | shares (12,082)
Number of Options Outstanding, Ending Balance | shares 644,604
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]  
Weighted Average Exercise Price, Beginning Balance | $ / shares $ 8.44
Weighted Average Exercise Price, Granted | $ / shares 44.84
Weighted Average Exercise Price, Exercised | $ / shares 1.43
Weighted Average Exercise Price, Canceled | $ / shares 13.18
Weighted Average Exercise Price, Ending Balance | $ / shares $ 15.51