v3.25.3
FAIR VALUE MEASUREMENTS - Summary of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets of deferred compensation plan $ 181,127 $ 167,170  
Available-for-sale debt securities 45,159 40,999 $ 39,459
Deferred compensation plan obligations (181,127) (167,170)  
Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Assets of deferred compensation plan 181,127 167,170  
Available-for-sale debt securities 45,159 40,999  
Other depository assets 180 176  
Deferred compensation plan obligations (181,127) (167,170)  
Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Interest rate swaps (3,635) 2,681  
Bank debt, net (1,568,962) (1,399,932)  
Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Contingent purchase price liabilities $ (41,257) $ (96,967)