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DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Summary of Financial Assets and Financial Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Detail)
$ in Thousands
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 2,477,758 $ 2,376,860
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 21,862 34,949
Asset-backed securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value 47,112 92,629
Asset-backed securities | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair Value $ 21,862 $ 34,949
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.10 0.12
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.03 0.03
Minimum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.08 0.11
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.13 0.14
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.17 0.13
Maximum | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.31 0.30
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Discount rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.12 0.13
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Annualized loss rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.06 0.05
Weighted Average | Asset-backed securities | Significant Unobservable Inputs (Level 3) | Constant prepayment rate    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.26 0.26