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Fair Values of Assets and Liabilities - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | $ 124,254 | $ 84,738 |
Interest-bearing deposits | 29,990 | 310,634 |
Debt Securities, Available-for-Sale | 762,661 | 1,041,380 |
Debt Securities, Held-to-maturity | 461,162 | 541,311 |
Other investments | 26,414 | 12,838 |
Loans | 7,642,143 | 6,839,230 |
Deposits | 8,005,469 | 7,982,498 |
Short-term borrowings | 372,694 | 138,315 | $ 117,373
Long-term debt | 4,862 | 5,573 |
Subordinated Debentures outstanding, Amount | 170,937 | 170,775 |
Capital lease obligation | 5,425 | 5,921 |
Loans Held for Sale | 11,869 | 18,583 |
Level 1 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Debt Securities, Available-for-Sale | 0 |  |
Other investments | 0 |  |
Loans Held for Sale | 0 | 0 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Debt Securities, Available-for-Sale | 762,661 |  |
Other investments | 25,244 | 11,668 |
Loans Held for Sale | 11,869 | 18,583 |
Level 3 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Debt Securities, Available-for-Sale | 0 |  |
Loans Held for Sale | 0 | 0 |
Carrying Amount [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | 124,254 | 84,738 |
Interest-bearing deposits | 29,990 | 310,634 |
Debt Securities, Available-for-Sale | 762,661 | 1,041,380 |
Debt Securities, Held-to-maturity | 461,162 | 541,311 |
Other investments | 26,414 | 12,838 |
Loans held for sale | 11,869 | 18,583 |
Loans | 7,642,143 | 6,839,230 |
Deposits | 8,005,469 | 7,982,498 |
Short-term borrowings | 372,694 | 138,315 |
Long-term debt | 4,862 | 5,573 |
Subordinated Debentures outstanding, Amount | 170,937 | 170,775 |
Capital lease obligation | 5,425 | 5,921 |
Estimated Fair Value [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | 124,254 | 84,738 |
Interest-bearing deposits | 29,990 | 310,634 |
Debt Securities, Available-for-Sale | 762,661 | 1,041,380 |
Debt Securities, Held-to-maturity | 386,205 | 536,651 |
Other investments | 26,414 | 12,838 |
Loans held for sale | 11,869 | 18,583 |
Loans | 7,639,721 | 7,169,768 |
Deposits | 7,992,012 | 7,980,101 |
Short-term borrowings | 363,135 | 136,473 |
Long-term debt | 4,781 | 6,065 |
Subordinated Debentures outstanding, Amount | 156,621 | 175,040 |
Capital lease obligation | 5,425 | 5,921 |
Estimated Fair Value [Member] | Level 1 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | 124,254 | 84,738 |
Interest-bearing deposits | 29,990 | 310,634 |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-maturity | 0 | 0 |
Other investments | 0 | 0 |
Loans held for sale | 0 | 0 |
Loans | 0 | 0 |
Deposits | 0 | 0 |
Short-term borrowings | 0 | 0 |
Long-term debt | 0 | 0 |
Subordinated Debentures outstanding, Amount | 0 | 0 |
Capital lease obligation | 0 | 0 |
Estimated Fair Value [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | 0 | 0 |
Interest-bearing deposits | 0 | 0 |
Debt Securities, Available-for-Sale | 762,661 | 1,041,380 |
Debt Securities, Held-to-maturity | 386,205 | 536,651 |
Other investments | 25,244 | 11,668 |
Loans held for sale | 11,869 | 18,583 |
Loans | 23,140 | 42,538 |
Deposits | 7,992,012 | 7,980,101 |
Short-term borrowings | 363,135 | 136,473 |
Long-term debt | 4,781 | 6,065 |
Subordinated Debentures outstanding, Amount | 0 | 0 |
Capital lease obligation | 5,425 | 5,921 |
Estimated Fair Value [Member] | Level 3 [Member] |  |  |
Fair Value Measurements Of Financial Instruments [Line Items] |  |  |
Cash and due from banks | 0 | 0 |
Interest-bearing deposits | 0 | 0 |
Debt Securities, Available-for-Sale | 0 | 0 |
Debt Securities, Held-to-maturity | 0 | 0 |
Other investments | 1,170 | 1,170 |
Loans held for sale | 0 | 0 |
Loans | 7,616,581 | 7,127,230 |
Deposits | 0 | 0 |
Short-term borrowings | 0 | 0 |
Long-term debt | 0 | 0 |
Subordinated Debentures outstanding, Amount | 156,621 | 175,040 |
Capital lease obligation | $ 0 | $ 0 |

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