Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Narrative (Details)

v3.20.2
Stock-Based Compensation Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award          
Stock-based compensation expense   $ 6,137 $ 4,806 $ 18,423 $ 13,576
Stock-based compensation expense, tax benefit   $ 1,521 $ 1,187 $ 4,565 $ 3,353
Number of shares available for grant (shares)   12,239,586   12,239,586  
Number of additional shares authorized 9,000,000        
Number of restricted stock awards forfeit       577,365  
Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Granted       1,158,605  
Unrecognized stock-based compensation expense   $ 21,501   $ 21,501  
Unrecognized stock-based compensation expense, period for recognition       1 year 6 months 21 days  
Performance Stock Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Granted       456,311  
Award vesting period       3 years  
Unrecognized stock-based compensation expense   $ 10,790   $ 10,790  
Unrecognized stock-based compensation expense, period for recognition       1 year 10 months 17 days  
Performance Stock Units (PSUs) | Total Shareholder Return [Member]          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting percentage       50.00%  
Performance Stock Units (PSUs) | Financial Performance Target [Member]          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting percentage       50.00%  
Director | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting period       1 year  
Employee | Restricted Stock Units (RSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting period       3 years  
Minimum | Performance Stock Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting percentage       0.00%  
Maximum | Performance Stock Units (PSUs)          
Share-based Compensation Arrangement by Share-based Payment Award          
Award vesting percentage       200.00%