XML 86 R71.htm IDEA: XBRL DOCUMENT v3.19.3
Summary of RSU Activity (Detail) - Restricted Stock Units (RSUs)
9 Months Ended
Sep. 30, 2019
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Beginning Unvested, Number of RSUs | shares 1,367,630
Granted, Number of RSUs | shares 436,182
Vested, Number of RSUs | shares (505,771)
Forfeited, Number of RSUs | shares (83,844)
Ending Unvested, Number of RSUs | shares 1,214,197
Shares vested but not released, Number of RSUs | shares 187,395
Beginning Unvested, Weighted Average Fair Value | $ / shares $ 3.81
Granted, Weighted Average Fair Value | $ / shares 5.05
Vested, Weighted Average Fair Value | $ / shares 3.45
Forfeited, Weighted Average Fair Value | $ / shares 4.06
Ending Unvested, Weighted Average Fair Value | $ / shares 4.38
Shares vested but not released, Weighted Average Fair Value | $ / shares $ 5.32