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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 | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available for sale | $ 3,791,575 | $ 1,206,431
Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available for sale | 142,885 | 0
Asset-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available for sale | 297,425 | 377,145
Asset-backed securities | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities, available for sale | 142,885 |
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 |  | 35
Residential mortgage loan commitments | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Residential mortgage loan commitments | $ 179 | $ 200
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 | 0.04 |
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 | 0.04 |
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 | 0.17 |
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 |  | 0.08
Minimum | Residential mortgage loan commitments | Significant Unobservable Inputs (Level 3) | Pull-through rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Residential mortgage loans, measurement input | 0.76 | 0.78
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 | 0.05 |
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 | 0.04 |
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 | 0.33 |
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 |  | 0.09
Maximum | Residential mortgage loan commitments | Significant Unobservable Inputs (Level 3) | Pull-through rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Residential mortgage loans, measurement input | 0.89 | 0.78
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 | 0.05 |
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 | 0.04 |
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] |  |
Debt securities, available-for-sale, measurement input | 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 |  | 0.09
Weighted Average | Residential mortgage loan commitments | Significant Unobservable Inputs (Level 3) | Pull-through rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Residential mortgage loans, measurement input | 0.85 | 0.78
Real estate | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans | $ 4,170 | $ 2,928
Real estate | Minimum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.08 | 0.08
Real estate | Maximum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.08 | 0.08
Real estate | Weighted Average | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.08 | 0.08
Commercial and industrial | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans | $ 951 | $ 939
Commercial and industrial | Minimum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.08 | 0.07
Commercial and industrial | Minimum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Business asset valuation adjustments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.20 | 0.60
Commercial and industrial | Maximum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.26 | 0.08
Commercial and industrial | Maximum | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Business asset valuation adjustments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.20 | 0.60
Commercial and industrial | Weighted Average | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Liquidation expenses |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.12 | 0.08
Commercial and industrial | Weighted Average | Collateral-dependent loans | Significant Unobservable Inputs (Level 3) | Business asset valuation adjustments |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Collateral-dependent loans, measurement input | 0.20 | 0.60

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