Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Equity - Fair Value of Each Stock Option Award Granted (Detail)

v3.19.1
Equity - Fair Value of Each Stock Option Award Granted (Detail)
3 Months Ended
Mar. 31, 2019
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate (%) 2.50%
Dividend yield (%) 0.00%
Weighted average fair value/share at grant date (in dollars per share) $ 5.64
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 3 years
Expected volatility (%) 38.90%
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term (in years) 4 years 6 months
Expected volatility (%) 44.00%