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Fair Value Information - Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets |  |
Total cash and cash equivalents | $ 281,285 | $ 203,461
Investment securities available-for-sale | 2,956,125 | 3,255,211
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 2,464,610 | 2,554,301
Total loans, net of allowance for credit losses | 8,818,068 | 8,994,275
Derivative Asset | 1,235 | 82
Deposits: |  |
Interest-bearing | 4,227,467 | 4,671,881
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 271,754 | 565,513
Interest rate swaps |  |
Assets |  |
Derivative Asset | 0 | 0
Interest rate swaps | Derivatives designated as hedging instruments |  |
Assets |  |
Derivative Asset | 0 |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 0 |
Interest rate swaps | Derivatives Not Designated as Hedging Instruments [Member] |  |
Assets |  |
Derivative Asset | 0 | 0
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 112 | 82
Carrying Value [Member] |  |
Assets |  |
Total cash and cash equivalents | 281,285 | 203,461
Interest-earning balances due from depository institutions | 8,216 | 9,553
Investment securities available-for-sale | 2,956,125 | 3,255,211
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 2,464,610 | 2,554,301
Total loans, net of allowance for credit losses | 8,818,068 | 8,994,275
Derivative Asset | 112 | 82
Deposits: |  |
Interest-bearing | 4,227,467 | 4,671,881
Borrowings | 2,341,642 | 1,560,431
Junior subordinated debentures | 0 | 0
Carrying Value [Member] | Derivatives designated as hedging instruments |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 6,938 |
Carrying Value [Member] | Derivatives Not Designated as Hedging Instruments [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 112 | 82
Estimated Fair Value [Member] |  |
Assets |  |
Total cash and cash equivalents | 281,285 | 203,461
Interest-earning balances due from depository institutions | 8,216 | 9,553
Investment securities available-for-sale | 2,956,125 | 3,255,211
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 2,082,881 | 2,155,587
Total loans, net of allowance for credit losses | 8,503,518 | 8,074,952
Derivative Asset | 112 | 82
Deposits: |  |
Interest-bearing | 4,222,773 | 4,664,657
Borrowings | 2,283,631 | 1,444,659
Junior subordinated debentures | 0 | 0
Estimated Fair Value [Member] | Level 1 [Member] |  |
Assets |  |
Total cash and cash equivalents | 281,285 | 203,461
Interest-earning balances due from depository institutions | 0 | 0
Investment securities available-for-sale | 0 | 0
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 0 | 0
Total loans, net of allowance for credit losses | 0 | 0
Deposits: |  |
Interest-bearing | 0 | 0
Borrowings | 0 | 0
Junior subordinated debentures | 0 | 0
Estimated Fair Value [Member] | Level 2 [Member] |  |
Assets |  |
Total cash and cash equivalents | 0 | 0
Interest-earning balances due from depository institutions | 8,216 | 9,553
Investment securities available-for-sale | 2,956,125 | 3,255,211
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 2,082,881 | 2,155,587
Total loans, net of allowance for credit losses | 0 | 0
Derivative Asset | 112 | 82
Deposits: |  |
Interest-bearing | 4,222,773 | 4,664,657
Borrowings | 2,283,631 | 1,444,659
Junior subordinated debentures | 0 | 0
Estimated Fair Value [Member] | Level 3 [Member] |  |
Assets |  |
Total cash and cash equivalents | 0 | 0
Interest-earning balances due from depository institutions | 0 | 0
Investment securities available-for-sale | 0 | 0
Investment securities held-to-maturity (with fair value of $2,082,881 at December 31, 2023, and $2,155,587 at December 31, 2022 | 0 | 0
Total loans, net of allowance for credit losses | 8,503,518 | 8,074,952
Deposits: |  |
Interest-bearing | 0 | 0
Borrowings | 0 | 0
Junior subordinated debentures | 0 | 0
Estimated Fair Value [Member] | Derivatives designated as hedging instruments |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 6,938 |
Estimated Fair Value [Member] | Derivatives designated as hedging instruments | Level 1 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 0 |
Estimated Fair Value [Member] | Derivatives designated as hedging instruments | Level 2 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 6,938 |
Estimated Fair Value [Member] | Derivatives designated as hedging instruments | Level 3 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 0 |
Estimated Fair Value [Member] | Derivatives Not Designated as Hedging Instruments [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 112 | 82
Estimated Fair Value [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Level 1 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 0 | 0
Estimated Fair Value [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Level 2 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | 112 | 82
Estimated Fair Value [Member] | Derivatives Not Designated as Hedging Instruments [Member] | Level 3 [Member] |  |
Deposits: |  |
Financial liabilities, Net Amounts Presented in the Consolidated Balance Sheets | $ 0 | $ 0

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