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	Mar. 31, 2026 USD ($)	Dec. 31, 2025 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,961,852	$ 1,906,535
Other real estate owned	12,506	12,432
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	275,706	237,813
Asset-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	275,706	237,813
Asset-backed securities \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 275,706	237,813
Other real estate owned \| Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned		$ 12,432
Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input	0.06
Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Fair Value Estimate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 12,506
Minimum \| Asset-backed securities \| Significant Unobservable Inputs (Level 3) \| Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset-backed securities, measurement input	0.08	0.08
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]
Asset-backed securities, measurement input	0.01	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]
Asset-backed securities, measurement input	0.19	0.17
Minimum \| Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input	0.06
Minimum \| Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Liquidation expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input		0.06
Maximum \| Asset-backed securities \| Significant Unobservable Inputs (Level 3) \| Discount rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset-backed securities, measurement input	0.09	0.09
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]
Asset-backed securities, measurement input	0.13	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]
Asset-backed securities, measurement input	0.20	0.20
Maximum \| Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Collateral appraisal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input	0.07
Maximum \| Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Liquidation expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input		0.07
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]
Asset-backed securities, measurement input	0.08	0.08
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]
Asset-backed securities, measurement input	0.04	0.04
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]
Asset-backed securities, measurement input	0.19	0.19
Weighted Average \| Other real estate owned \| Significant Unobservable Inputs (Level 3) \| Liquidation expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned, measurement input		0.06

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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Carrying amount as of the balance sheet date of other real estate and foreclosed assets. Other real estate may include real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. Foreclosed assets include all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings.

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