Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Narrative (Detail)

v3.21.2
Stock Based Compensation - Narrative (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock compensation expense (gain) $ 4,500   $ 2,600   $ 7,200 $ 4,800
Unrecognized stock-based compensation cost 15,000       $ 15,000  
Unrecognized share-based compensation expense, weighted-average recognition period (in years)         2 years 2 months 12 days  
Common stock issuance ESPP Plan 1,245 $ 1,024 $ 928 $ 796    
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized stock-based compensation cost $ 12,100       $ 12,100  
Unrecognized share-based compensation expense, weighted-average recognition period (in years)         1 year 10 months 24 days  
Employee Stock Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Employee stock purchase plan, discount rate (as a percent)         15.00%  
Common stock issuance ESPP Plan (in shares) 31,839   41,058   55,756 75,388
Common stock issuance ESPP Plan $ 300   $ 200   $ 500 $ 400