Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock Options - Additional Information (Detail)

v3.20.2
Stock-Based Compensation - Stock Options - Additional Information (Detail)
9 Months Ended
Sep. 30, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized stock-based compensation expense related to non-vested stock options $ 8,700,000
2017 Omnibus Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options priced at fair market value, percent 100.00%
Stock option expiration period 10 years
Weighted average remaining contractual term 7 years 6 months
Aggregate intrinsic value of options outstanding and exercisable $ 1,800,000
2017 Omnibus Plan [Member] | Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option, vesting period 3 years
2017 Omnibus Plan [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option, vesting period 6 years
Employee Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Dividends paid on common stock $ 0
Unrecognized stock-based compensation expense, expected recognition weighted-average period 32 months