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Balance Sheet Offsetting - Financial Instruments Eligible for Offset Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Gross Amount Recognized, Derivative, Financial Assets | $ 119,723 | $ 118,994
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0
Net Amount Recognized, Derivative, Financial Assets | 119,723 | 118,994
Gross Amount Recognized, Resell Agreements, Financial Assets | 84,650 | 87,150
Gross Amount Offset, Resell Agreements, Financial Assets | 0 | 0
Net Amount Recognized, Resell Agreements, Financial Assets | 84,650 | 87,150
Gross Amount Recognized, Financial Assets | 204,373 | 206,144
Gross Amount Offset, Financial Assets | 0 | 0
Net Amount Recognized, Financial Assets | 204,373 | 206,144
Gross Amount Recognized, Derivative, Financial Liabilities | 41,311 | 73,829
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0
Net Amount Recognized, Derivative, Financial Liabilities | 41,311 | 73,829
Gross Amount Recognized, Repurchase Agreements, Financial Liabilities | 4,127,188 | 4,660,641
Gross Amount Offset, Repurchase Agreements, Financial Liabilities | 0 | 0
Net Amount Recognized, Repurchase Agreements, Financial Liabilities | 4,127,188 | 4,660,641
Gross Amount Recognized, Financial Liabilities | 4,168,499 | 4,734,470
Gross Amount Offset, Financial Liabilities | 0 | 0
Net Amount Recognized, Financial Liabilities | 4,168,499 | 4,734,470
Loan Lease Interest Rate Swaps And Caps [Member] |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Gross Amount Recognized, Derivative, Financial Assets | 70,233 | 85,691
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0
Net Amount Recognized, Derivative, Financial Assets | 70,233 | 85,691
Commodity Swaps And Options [Member] |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Gross Amount Recognized, Derivative, Financial Assets | 49,489 | 33,302
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0
Net Amount Recognized, Derivative, Financial Assets | 49,489 | 33,302
Gross Amount Recognized, Derivative, Financial Liabilities | 20,999 | 72,717
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0
Net Amount Recognized, Derivative, Financial Liabilities | 20,999 | 72,717
Foreign Currency Forward Contracts [Member] |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Gross Amount Recognized, Derivative, Financial Assets | 1 | 1
Gross Amount Offset, Derivatives, Financial Assets | 0 | 0
Net Amount Recognized, Derivative, Financial Assets | 1 | 1
Gross Amount Recognized, Derivative, Financial Liabilities | 19 | 10
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0
Net Amount Recognized, Derivative, Financial Liabilities | 19 | 10
Loan Lease Interest Rate Swaps [Member] |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |
Gross Amount Recognized, Derivative, Financial Liabilities | 20,293 | 1,102
Gross Amount Offset, Derivative, Financial Liabilities | 0 | 0
Net Amount Recognized, Derivative, Financial Liabilities | $ 20,293 | $ 1,102

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