Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity- Restricted Stock Units Narrative (Details)

v3.24.0.1
Stockholders' Equity- Restricted Stock Units Narrative (Details) - USD ($)
$ / shares in Units, shares in Thousands
 3 Months Ended 10 Months Ended 12 Months Ended
Apr. 04, 2022
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation       $ 31,151,000 $ 37,291,000 $ 334,339,000  
Percent of salary foregone by CEO     100.00%        
2021 Equity Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       19,000,000      
2021 Equity Plan | General, administrative and marketing              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       17,100,000      
2021 Equity Plan | Other operating              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       1,900,000      
Four Ratable Annual Installments              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Ratable annual installments, vested       800,000 1,600,000    
Two Ratable Annual Installments              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Ratable annual installments, vested       100,000 100,000    
One Ratable Annual Installments              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Ratable annual installments, vested       $ 300,000 $ 100,000    
Restricted stock units              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)       1,131 1,700 1,900  
Fair value of common stock           $ 600,000  
Share-based compensation           $ 600,000  
Granted (in usd per share)       $ 17.41 $ 14.26 $ 18.01  
Units vested during the period fair value       $ 10,200,000 $ 12,200,000 $ 0  
Share-based compensation expense       18,100,000 12,400,000 6,600,000  
Unrecognized share-based compensation expense       $ 26,300,000      
Unrecognized share-based compensation expense, period of recognition       2 years      
Restricted stock units | Center operations              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       $ 2,100,000 1,400,000 200,000  
Restricted stock units | General, administrative and marketing              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       15,500,000 10,600,000 6,300,000  
Restricted stock units | Other operating              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense       $ 500,000 $ 400,000 $ 100,000  
Restricted stock units | 2015 Equity Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)           600  
Restricted stock units | 2015 Equity Plan | CEO              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)           500 500
Vesting percentage             50.00%
Percentage vested after 180 Days from effective date of IPO             100.00%
Accrued compensation liability     $ 2,200,000       $ 2,200,000
Restricted stock units | 2015 Equity Plan | Employees and other participants other than CEO              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)   100       100  
Vesting percentage   50.00%          
Percentage vested after 180 Days from effective date of IPO 100.00% 100.00%          
Restricted stock units | 2021 Equity Plan              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)           1,300  
Vesting period           4 years  
Restricted stock units | 2021 Equity Plan | Share-based Payment Arrangement, Tranche One              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares) 100            
Restricted Stock Units Time Vested              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)       400 1,400    
Performance Shares              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)       400 300    
Performance Shares, Granted to Executives              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Awards granted (in shares)       300