v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
New Accounting Pronouncements or Change in Accounting Principle            
Provision (reversal) for expected credit losses $ 3,400,000 $ 2,000,000.0 $ 4,900,000 $ 3,500,000    
Guaranty liabilities 35,455,000   35,455,000   $ 30,610,000 $ 26,315,000
Allowance for doubtful accounts, period (decrease) increase (1,400,000) 1,200,000 (1,500,000) (800,000)    
Allowance for doubtful accounts 5,900,000   5,900,000   7,400,000  
Allowance for credit loss 8,800,000   8,800,000   8,800,000  
Other income (loss), net 16,000.0 230,000 $ 660,000 980,000    
Number of reportable segments | segment     1      
Revenues 888,419,000 759,112,000 $ 1,734,939,000 1,424,606,000    
Interest income on loans held for sale 9,487,000 8,991,000 20,772,000 17,298,000    
Labor and related expense 607,820,000 515,184,000 1,191,823,000 989,042,000    
Equity-based compensation and allocations of net income to limited partnership units and FPUs 68,116,000 60,140,000 136,512,000 134,486,000    
Depreciation and amortization 45,979,000 42,611,000 92,211,000 88,969,000    
Professional and consulting fees 8,088,000 7,794,000 16,612,000 17,364,000    
Interest expense, net 7,414,000 9,023,000 14,328,000 17,506,000    
Total assets 5,188,222,000   5,188,222,000   $ 5,019,167,000  
Reportable Segment            
New Accounting Pronouncements or Change in Accounting Principle            
Other income (loss), net 16,000.0 200,000 700,000 1,000,000.0    
Revenues 888,400,000 759,100,000 1,734,900,000 1,424,600,000    
Interest income on loans held for sale 9,500,000 9,000,000.0 20,800,000 17,300,000    
Labor and related expense 607,800,000 515,200,000 1,191,800,000 989,000,000.0    
Equity-based compensation and allocations of net income to limited partnership units and FPUs 68,100,000 60,100,000 136,500,000 134,500,000    
Operating expenses 240,200,000 201,400,000 476,400,000 411,300,000    
Depreciation and amortization 46,000,000.0 42,600,000 92,200,000 89,000,000.0    
Professional and consulting fees 8,100,000 7,800,000 16,600,000 17,400,000    
Interest expense, net $ 7,400,000 $ 9,000,000.0 $ 14,300,000 $ 17,500,000