Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Details)

v3.19.3
Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member]
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Restricted Stock Units  
Beginning balance | shares 1,494,111
Granted | shares 285,317
Vested and Released | shares (522,493)
Forfeited | shares (19,040)
Ending balance | shares 1,237,895
Weighted Average Grant Date Fair Value  
Beginning balance | $ / shares $ 26.91
Granted | $ / shares 4.06
Vested and Released | $ / shares 28.94
Forfeited | $ / shares 9.35
Ending balance | $ / shares $ 21.20