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Equity-based Compensation Plans - Additional Information (Details)
1 Months Ended 12 Months Ended
Oct. 30, 2020
USD ($)
Employee
Oct. 31, 2020
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation cost capitalized     $ 0 $ 0 $ 0
Vesting period     4 years    
Vesting percentage     25.00%    
Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, Grants in Period | shares     5,822,790    
Unrecognized compensation cost     $ 109,700,000    
Weighted average period of recognition     2 years 10 months 6 days    
Fair value units vested     $ 13,000,000 0 0
QLH Class B Profits Interests          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Compensation cost capitalized     800,000 1,300,000 0
Number of employees or beneficiaries exchanged | Employee 43        
Cash used to settle redemptions     19,400,000 5,800,000 0
Employee service share based compensation redemption amount not in excess of fair value.     18,600,000 4,500,000 0
QLH Class B Profits Interests | Initial Public Offering (IPO)          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Incremental compensation costs $ 2,700,000   0    
Employee service share based compensation cash flow effect cash used to settle portion of awards     $ 15,900,000    
QLH Restricted Class B-1 Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     4 years    
Vesting percentage     25.00%    
Omnibus Incentive Plan | Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Terms   The restricted stock units represent the right to receive one share of Company Class A common stock.      
Class B Units | QLH Class B Restricted Unit Plan | Four-year Vesting Period          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period     4 years    
Vesting percentage     25.00%    
QLH Class B-1 Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation cost     $ 1,400,000    
Weighted average period of recognition     3 years    
Fair value units vested     $ 2,000,000 0 0
Units and shares authorized | shares     6,470,599    
QLH Class B-1 Units | QLH Class B Profits Interests | Initial Public Offering (IPO)          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, Grants in Period | shares     6,470,599    
QLH Class B-1 Units | QLH Restricted Class B-1 Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation arrangement by share-based payment award, equity Instruments other than options, Grants in Period | shares     6,470,599    
Company Restricted Class A Shares          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Units and shares authorized | shares     6,470,599    
Unvested Company Class A Shares          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized compensation cost     $ 3,300,000    
Weighted average period of recognition     3 years 21 days    
Fair value units vested     $ 4,500,000 $ 0 $ 0
Minimum | Omnibus Incentive Plan | Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   3 years      
Requisite service period   3 years      
Maximum | Omnibus Incentive Plan | Restricted Stock Units and Other Equity-based Awards          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of units that can be issued or granted | shares   12,506,550      
Maximum | Omnibus Incentive Plan | Restricted Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Vesting period   4 years      
Requisite service period   4 years      
Maximum | Class B Units | QLH Class B Restricted Unit Plan | Profits Interests to Directors, Employees, Managers, Independent Contractors, and Advisors          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Number of units that can be issued or granted | shares     177,300