Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.21.2
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Valuation Allowance [Line Items]          
Effective Income Tax Rate Reconciliation, Percent 14.14% 21.31% (3.06%) 7.60%  
Deferred tax asset, components $ 61,100   $ 61,100    
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00%    
Deferred tax assets 395,800   $ 395,800    
Deferred tax liabilities 400   400   $ 600
Valuation allowance 0   $ 0    
Valuation allowance commentary     As of September 30, 2021, the Company concluded that, based on the weight of all available positive and negative evidence, the Deferred tax assets with respect to the Company’s basis difference in its investment in RSG LLC are more likely than not to be realized.    
Payment of benefits percentage realized from increase in the tax basis     85.00%    
Tax receivable agreement liability 282,500   $ 282,500    
Unrecognized Tax Benefits 0   0    
Temporary differences in deferred tax assets     61,100    
TRA Member          
Valuation Allowance [Line Items]          
Deferred tax assets 329,000   329,000    
Benefits from future deductions 234,000   234,000    
TRA Alternative Payments [Member]          
Valuation Allowance [Line Items]          
Deferred tax asset, components 95,000   95,000    
Benefits from future deductions $ 95,000   $ 95,000