XML 73 R54.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Stock-Based Compensation - Narrative (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Feb. 23, 2024
shares
Mar. 02, 2023
shares
Jan. 01, 2021
Jan. 01, 2020
shares
May 31, 2021
Nov. 30, 2020
USD ($)
May 31, 2020
tranche
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Dec. 31, 2023
$ / shares
shares
Sep. 30, 2018
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Weighted average grant date fair value, grants in period (in usd per share) | $ / shares               $ 16.85 $ 20.90 $ 14.87 $ 20.75    
Stock based compensation not recognized, options               $ 34,200   $ 34,200      
Stock based compensation not recognized, period for recognition (in years)                   2 years 1 month 6 days      
Total stock-based compensation expense               27,235 $ 22,354 $ 54,276 $ 44,620    
Stock options                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Exercises in period, intrinsic value               $ 8,400 $ 300 $ 9,000 $ 700    
Expected dividend yield               0.00% 0.00% 0.00% 0.00%    
Shares underlying unvested restricted stock units                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock based compensation not recognized, period for recognition (in years)                   2 years 1 month 6 days      
Stock based compensation not recognized, other than options               $ 137,600   $ 137,600      
Unvested balance (in shares) | shares               5,171,148   5,171,148   4,346,785  
Weighted average grant date fair value (in usd per share) | $ / shares               $ 34.51   $ 34.51   $ 42.63  
Shares underlying unvested performance-based restricted stock units                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock based compensation not recognized, period for recognition (in years)                   2 years 2 months 12 days      
Stock based compensation not recognized, other than options               $ 14,100   $ 14,100      
Weighted-average derivative service period         4 years 4 years              
Additional service period requirement           2 years              
Market-based stock unit vesting period         6 months 6 months              
Forfeitures value                   25,600      
Total stock-based compensation expense           $ 0   $ 2,200 $ 200 $ 3,600 $ 500    
Total market-based restricted stock units approved and granted (in shares) | shares                   870,268      
Unvested balance (in shares) | shares               1,291,889   1,291,889   412,490  
Weighted average grant date fair value (in usd per share) | $ / shares               $ 40.30   $ 40.30   $ 91.25  
Shares underlying unvested performance-based restricted stock units | Minimum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Weighted-average derivative service period           7 months 6 days              
Market-based stock unit vesting period           7 months 6 days              
Shares underlying unvested performance-based restricted stock units | Maximum                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Weighted-average derivative service period           4 years              
Market-based stock unit vesting period           4 years 6 months              
MSUs                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Market-based restricted stock share price goal     30 days                    
Unvested balance (in shares) | shares                       2,260,764  
Weighted average grant date fair value (in usd per share) | $ / shares                       $ 65.20  
MSUs | Chief Executive Officer                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Total market-based restricted stock units approved and granted (in shares) | shares             1,695,574            
Number of tranches | tranche             3            
Shares available for issuance under the 2018 Employee Stock Purchase Plan                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Stock based compensation not recognized, period for recognition (in years)                   4 months 24 days      
Stock based compensation not recognized, other than options               $ 1,400   $ 1,400      
Total stock-based compensation expense               $ 1,100 $ 1,400 $ 2,500 $ 3,000    
Expected dividend yield                   0.00% 0.00%    
Shares authorized (in shares) | shares 1,106,700 1,026,194   942,614                  
Maximum employee subscription rate, ESPP               10.00%   10.00%      
Purchase price of common stock (as a percent of the fair value of common stock)                   85.00%      
Purchase period                   6 months      
Common stock issued under employee stock purchase plan (in shares) | shares               371,826 298,781 371,826 298,781    
Shares available for issuance under the 2018 Employee Stock Purchase Plan | 2018 Employee Stock Purchase Plan                          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                          
Number of shares approved (in share) | shares                         922,250