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Fair Value Measurement - Carrying Amount and Fair Value of Financial Instruments Not Measured at Fair Value on a Recurring or Nonrecurring Basis (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Financial Assets: |  |
Cash and due from financial institutions | $ 90,456 | $ 63,155
Equity securities in financial institutions | 2,400 | 2,400
Investments in time deposits | 960 | 1,450
Other securities | 32,592 | 30,352
Loans, net of allowance | 3,063,752 | 3,041,561
Accrued interest receivable | 14,041 | 13,453
Financial Liabilities: |  |
Short-term FHLB advances | 360,000 | 339,000
Long-term FHLB advances | 1,355 | 1,501
Other borrowings | 6,140 | 6,293
Carrying Amount [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 90,456 | 63,155
Investments in time deposits | 960 | 1,450
Other securities | 32,592 | 30,352
Loans, held for sale | 4,324 | 665
Loans, net of allowance | 3,063,752 | 3,041,561
Accrued interest receivable | 14,041 | 13,453
Financial Liabilities: |  |
Nonmaturing deposits | 2,273,008 | 2,266,916
Time deposits | 965,880 | 944,954
Short-term FHLB advances | 360,000 | 339,000
Long-term FHLB advances | 1,355 | 1,501
Subordinated debentures | 104,130 | 104,089
Other borrowings | 6,140 | 6,293
Accrued interest payable | 6,924 | 9,518
Total Fair Value [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 90,456 | 63,155
Investments in time deposits | 960 | 1,450
Other securities | 32,592 | 30,352
Loans, held for sale | 4,324 | 665
Loans, net of allowance | 2,935,074 | 2,919,899
Accrued interest receivable | 14,041 | 13,453
Financial Liabilities: |  |
Nonmaturing deposits | 2,273,008 | 2,266,916
Time deposits | 968,778 | 948,734
Short-term FHLB advances | 360,000 | 339,000
Long-term FHLB advances | 1,302 | 1,418
Subordinated debentures | 102,662 | 101,175
Other borrowings | 6,140 | 6,293
Accrued interest payable | 6,924 | 9,518
(Level 1) [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 90,456 | 63,155
Other securities | 32,592 | 30,352
Loans, held for sale | 0 | 0
Accrued interest receivable | 14,041 | 13,453
Financial Liabilities: |  |
Nonmaturing deposits | 2,273,008 | 2,266,916
Short-term FHLB advances | 360,000 | 339,000
Accrued interest payable | 6,924 | 9,518
(Level 2) [Member] |  |
Financial Assets: |  |
Investments in time deposits | 960 | 1,450
Loans, held for sale | 4,324 | 665
(Level 3) [Member] |  |
Financial Assets: |  |
Loans, net of allowance | 2,935,074 | 2,919,899
Financial Liabilities: |  |
Time deposits | 968,778 | 948,734
Long-term FHLB advances | 1,302 | 1,418
Subordinated debentures | 102,662 | 101,175
Other borrowings | $ 6,140 | $ 6,293

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- Definition For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
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- Definition Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477263/942-210-45-4 + Details
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