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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 | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financial Assets: |  |
Cash and due from financial institutions | $ 246,165 | $ 128,222
Other securities | 17,011 | 20,537
Loans, net of allowance | 1,978,246 | 2,032,474
Bank owned life insurance | 46,728 | 45,976
Accrued interest receivable | 7,728 | 9,421
Financial Liabilities: |  |
Long-term FHLB advances | 75,000 | 125,000
Securities sold under agreement to repurchase | 23,331 | 28,914
Carrying Amount [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 253,165 | 139,522
Other securities | 17,011 | 20,537
Loans, held for sale | 5,810 | 7,001
Loans, net of allowance | 1,978,246 | 2,032,474
Bank owned life insurance | 46,728 | 45,976
Accrued interest receivable | 7,728 | 9,421
Financial Liabilities: |  |
Nonmaturing deposits | 2,181,931 | 1,902,560
Time deposits | 252,835 | 286,838
Long-term FHLB advances | 75,000 | 125,000
Securities sold under agreement to repurchase | 23,331 | 28,914
Subordinated debentures | 29,427 | 29,427
Accrued interest payable | 115 | 204
Total Fair Value [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 253,165 | 139,522
Other securities | 17,011 | 20,537
Loans, held for sale | 5,926 | 7,141
Loans, net of allowance | 1,996,174 | 2,063,249
Bank owned life insurance | 46,728 | 45,976
Accrued interest receivable | 7,728 | 9,421
Financial Liabilities: |  |
Nonmaturing deposits | 2,181,931 | 1,902,560
Time deposits | 253,643 | 288,298
Long-term FHLB advances | 76,617 | 130,942
Securities sold under agreement to repurchase | 23,331 | 28,914
Subordinated debentures | 29,534 | 31,479
Accrued interest payable | 115 | 204
(Level 1) [Member] |  |
Financial Assets: |  |
Cash and due from financial institutions | 253,165 | 139,522
Other securities | 17,011 | 20,537
Loans, held for sale | 5,926 | 7,141
Bank owned life insurance | 46,728 | 45,976
Accrued interest receivable | 7,728 | 9,421
Financial Liabilities: |  |
Nonmaturing deposits | 2,181,931 | 1,902,560
Securities sold under agreement to repurchase | 23,331 | 28,914
Accrued interest payable | 115 | 204
(Level 3) [Member] |  |
Financial Assets: |  |
Loans, net of allowance | 1,996,174 | 2,063,249
Financial Liabilities: |  |
Time deposits | 253,643 | 288,298
Long-term FHLB advances | 76,617 | 130,942
Subordinated debentures | $ 29,534 | $ 31,479

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- Definition The carrying amount of non maturing deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits and negotiable orders of withdrawal (NOW). + References No definition available. + Details
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- Definition The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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