v3.26.1
Transactions with Related Parties - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Dec. 31, 2023
Dec. 31, 2021
Related Party Transaction [Line Items]              
Other income, net $ 3,145,000 $ 1,291,000 $ 3,971,000 $ 2,293,000      
Cost of services (excluding depreciation and amortization) 173,554,000 225,243,000 339,935,000 343,206,000      
Other current liabilities 16,643,000   16,643,000   $ 5,912,000    
Prepaid expenses and other current assets 38,067,000   38,067,000   29,688,000    
Andersen Global And Contributing Firms              
Related Party Transaction [Line Items]              
Related party expenses 2,400,000 400,000 4,300,000 600,000      
Related Party              
Related Party Transaction [Line Items]              
Interest income includes interest earned on loans and notes receivable from related parties 0 0 0 0      
Financing receivable, before allowance for credit loss 8,101,000   8,101,000   11,648,000    
Total loans and notes receivable from related parties, net of allowance for credit losses 1,292,000   1,292,000   913,000    
Related Party | Member firm loans              
Related Party Transaction [Line Items]              
Financing receivable, before allowance for credit loss 7,036,000   7,036,000   11,035,000    
Total loans and notes receivable from related parties, net of allowance for credit losses 300,000   $ 300,000   300,000    
Maturity period     11 years        
Related Party | Employee loans              
Related Party Transaction [Line Items]              
Financing receivable, before allowance for credit loss 1,065,000   $ 1,065,000   218,000    
Total loans and notes receivable from related parties, net of allowance for credit losses 100,000   100,000   $ 200,000    
Maturity period         5 years    
Related Party | Stewardship Funds Maturing on December 31, 2029              
Related Party Transaction [Line Items]              
Financing receivable, before allowance for credit loss         $ 100,000 $ 2,000,000.0 $ 2,000,000.0
Financing receivable, term             30 days
Related Party | Stewardship Funds Maturing on December 31, 2033              
Related Party Transaction [Line Items]              
Financing receivable, before allowance for credit loss 0   0   300,000    
Financing receivable, term           60 days  
Related Party | Trademark and License Fees              
Related Party Transaction [Line Items]              
Other income, net (1,600,000) 900,000 2,300,000 1,800,000      
Cost of services (excluding depreciation and amortization)   $ 0   $ 100,000      
Other current liabilities         100,000    
Related Party | Andersen Global Commitments              
Related Party Transaction [Line Items]              
Other current liabilities 5,300,000   5,300,000   600,000    
Related Party | License Fees and Andersen Global Commitments              
Related Party Transaction [Line Items]              
Prepaid expenses and other current assets 9,000,000.0   9,000,000.0   1,300,000    
Related Party | State Tax Payments              
Related Party Transaction [Line Items]              
Prepaid expenses and other current assets $ 3,000,000.0   $ 3,000,000.0   $ 2,700,000