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Equity - Narrative (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended 12 Months Ended 24 Months Ended 85 Months Ended
Dec. 31, 2024
USD ($)
plan
class
$ / shares
shares
Mar. 31, 2024
USD ($)
$ / shares
shares
Jun. 08, 2021
vote
$ / shares
shares
Oct. 31, 2021
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
plan
class
$ / shares
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2024
USD ($)
plan
class
$ / shares
shares
Dec. 31, 2024
USD ($)
plan
class
$ / shares
shares
Dec. 31, 2023
USD ($)
Mar. 31, 2018
shares
Apr. 30, 2024
shares
Mar. 31, 2024
USD ($)
$ / shares
shares
May 01, 2024
USD ($)
Oct. 26, 2023
USD ($)
Jun. 01, 2023
USD ($)
Oct. 28, 2022
USD ($)
May 12, 2022
USD ($)
Jun. 30, 2021
$ / shares
shares
Mar. 31, 2017
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Preferred stock, authorized (in shares) 100,000,000 100,000,000     100,000,000   100,000,000 100,000,000       100,000,000           100,000,000  
Preferred stock, par value (in dollars per share) | $ / shares $ 0.001 $ 0.001     $ 0.001   $ 0.001 $ 0.001       $ 0.001           $ 0.001  
Preferred stock, outstanding (in shares) 0 0     0   0 0       0              
Preferred stock, issued (in shares) 0 0     0   0 0       0              
Number of classes of common stock | class 2       2   2 2                      
Common stock, authorized (in shares) 1,500,000,000 1,500,000,000     1,500,000,000   1,500,000,000 1,500,000,000       1,500,000,000              
Common stock, par value (in dollars per share) | $ / shares $ 0.001 $ 0.001     $ 0.001   $ 0.001 $ 0.001       $ 0.001              
Common stock, outstanding (in shares) 187,584,000 186,562,000     187,584,000   187,584,000 187,584,000       186,562,000              
Stock repurchase program, authorized amount | $                         $ 500,000 $ 410,000 $ 410,000 $ 410,000 $ 410,000    
Repurchase and retirement of common stock (in shares)             1,416,104       16,480,514                
Repurchase and retirement of common stock | $         $ 19,200 $ 72,359 $ 49,200 $ 89,502 $ 263,827                    
Stock repurchase program, remaining authorized repurchase amount | $ $ 450,800       450,800   $ 450,800 450,800                      
Accrued excise taxes | $ $ 0 $ 1,500                                  
Payment for excise taxes | $         $ 1,500     $ 1,491 0                    
Number of shares called by warrants (in shares) 315,000       315,000   315,000 315,000                      
Stock based compensation expense | $         $ 19,368 $ 11,771   $ 54,326 39,219                    
Number of equity incentive plans | plan 3       3   3 3                      
Options outstanding in period (in shares) 14,443,000 17,480,000     14,443,000   14,443,000 14,443,000       17,480,000              
Aggregate intrinsic value of options | $               $ 100,500 74,700                    
Unamortized compensation expense, option | $ $ 12,900       $ 12,900   $ 12,900 $ 12,900                      
Stock options                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Unamortized compensation expense, weighted average period of recognition               2 years 2 months 12 days                      
Award vesting period               4 years                      
Expiration period from the date of grant               10 years                      
Restricted Stock Units (RSUs)                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Unamortized stock-based compensation expense excluding option | $ $ 101,400       $ 101,400   $ 101,400 $ 101,400                      
Unamortized compensation expense, weighted average period of recognition               2 years 3 months 7 days                      
Total fair value of non-option instrument | $               $ 43,600 15,400                    
Other than options granted in period (in shares)               2,905,000                      
Outstanding unvested (in shares) 3,669,000 2,093,000     3,669,000   3,669,000 3,669,000       2,093,000              
Vested (in shares)               1,167,000                      
Restricted Stock Units (RSUs) | Minimum                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Award vesting period               3 years                      
Restricted Stock Units (RSUs) | Maximum                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Award vesting period               4 years                      
Performance-Based Restricted Stock Units                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Other than options granted in period (in shares)               88,974                      
Vested (in shares)               66,654                      
Unamortized compensation expense, option, non option | $ $ 4,400       $ 4,400   $ 4,400 $ 4,400                      
Approved by Board of Directors, Outside of Plans                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Options granted in period (in shares)                   4,682,582                  
Options exercised (in shares) 2,044,582       2,044,582   2,044,582 2,044,582                      
Options outstanding in period (in shares) 2,638,000       2,638,000   2,638,000 2,638,000                      
Contract With U.S. News & World Report, L.P.                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Number of shares called by warrants (in shares)                                     250,000
Exercise price called by warrants (in dollars per share) | $ / shares                                     $ 0.72
Warrants exercised in period , intrinsic value | $                       $ 6,700              
U.S. News Warrant                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Number of shares called by warrants (in shares)       516,000                              
Exercise price called by warrants (in dollars per share) | $ / shares       $ 12.56                              
Warrants exercised in period , intrinsic value | $               $ 3,600                      
Warrant outstanding, term       10 years                              
Warrants outstanding, vesting period       6 years 5 months 23 days                              
Fair value of warrant | $       $ 34,700                              
Stock based compensation expense | $               $ 4,000 $ 4,000                    
Shares exercised under warrant (in shares)               200,667                      
Outstanding shares under warrant (in shares) 315,333       315,333   315,333 315,333                      
Unamortized stock-based compensation expense excluding option | $ $ 17,400       $ 17,400   $ 17,400 $ 17,400                      
Unamortized compensation expense, weighted average period of recognition               3 years 3 months                      
U.S. News Warrant | Share-Based Payment Arrangement, Subsequent to Tranche One                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Warrants outstanding, vesting period       6 years                              
Common Class A                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Common stock, authorized (in shares)     1,000,000,000                                
Common stock, par value (in dollars per share) | $ / shares     $ 0.001                                
Common stock, number of votes per share | vote     1                                
Common stock, outstanding (in shares) 133,448,777       133,448,777   133,448,777 133,448,777                      
Common Class B                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Common stock, authorized (in shares)     500,000,000                                
Common stock, par value (in dollars per share) | $ / shares     $ 0.001                                
Common stock, number of votes per share | vote     10                                
Conversion of stock, conversion ratio     1                                
Common stock, outstanding (in shares) 54,135,272       54,135,272   54,135,272 54,135,272                      
Common Stock                                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                      
Conversion of stock (in shares)     85,523,836