Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.22.2
Stockholders' Equity (Details) - USD ($)
$ in Thousands, shares in Millions
3 Months Ended 6 Months Ended
Jan. 01, 2022
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Oct. 06, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Awards granted (in shares)       0.9    
Stock option exercises (in shares)   0.1   0.1    
Stock options outstanding (in shares)   25.3   25.3    
Stock options exercisable (in shares)   22.0   22.0    
Unrecognized share-based compensation expense, options   $ 22,500   $ 22,500    
Share-based compensation   $ 5,973 $ 1,130 $ 27,411 $ 1,130  
ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares reserved for issuance (in shares)   2.9   2.9    
Annual increase in shares authorized, percent   1.00%   1.00%    
Maximum shares available for issuance (in shares)   29.0   29.0    
Purchase price of commons stock, percent       85.00%    
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Contractual term       10 years    
Vesting period       4 years    
Share-based compensation expense   $ 3,300 0 $ 14,700 0  
Unrecognized share-based compensation expense, period of recognition       3 years 1 month 6 days    
Stock options | Center operations            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   300   $ 1,300    
Stock options | General, administrative and marketing            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   2,900   13,000    
Stock options | Other operating income/expense            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   100   400    
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   $ 2,500 2,900 $ 7,700 2,900  
Unrecognized share-based compensation expense, period of recognition       3 years 3 months 18 days    
Awards granted (in shares)       1.6    
Share-based compensation       $ 500    
Awards outstanding (in shares)   2.8   2.8    
Unrecognized share-based compensation expense   $ 38,600   $ 38,600    
Restricted stock units | Share-based Payment Arrangement, Tranche One            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       4 years    
Awards granted (in shares)       1.5    
Vesting percentage       50.00%    
Restricted stock units | Share-based Payment Arrangement, Tranche Two            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       2 years    
Awards granted (in shares)       0.1    
Restricted stock units | Share-Based Payment Arrangement, Tranche Three            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       1 year    
Awards granted (in shares)       0.1    
Restricted stock units | Center operations            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   300   $ 500    
Restricted stock units | General, administrative and marketing            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   2,200   7,100    
Restricted stock units | Other operating income/expense            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense       $ 100    
Time vesting restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Awards granted (in shares)       1.3    
Performance vesting restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Awards granted (in shares)       0.3    
Outstanding shares of Series A Preferred Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation expense   $ 200 $ 0 $ 5,000 $ 0  
2021 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares reserved for issuance (in shares)           14.5
Annual increase in shares authorized, percent   4.00%   4.00%    
Additional shares available for issuance (in shares) 7.7          
Term of plan       10 years    
Shares available for future grants (in shares)   19.1   19.1    
2015 Equity Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares available for issuance (in shares)           1.0