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Financial Instruments - Summary of Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Equity securities at fair value | $ 7,262 | $ 8,566
Securities available for sale, at fair value (Note 2) | 490,804 | 529,749
Loans to other financial institutions | 23,763 | 0
Noninterest-bearing deposits | 531,962 | 599,579
Interest-bearing deposits | 1,551,995 | 1,518,424
Reported Value Measurement [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 144,673 | 43,943
Equity securities at fair value | 7,262 | 8,566
Securities available for sale, at fair value (Note 2) | 490,804 | 529,749
Securities held to maturity | 414,743 | 425,906
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 9,514 | 8,581
Loans held for sale | 5,222 | 4,834
Loans to other financial institutions |  | 0
Core loans, net |  | 1,182,163
Accrued interest receivable | 10,491 | 8,949
Interest rate lock commitments | 60 | 28
Mortgage loan servicing rights | 3,944 | 4,322
Interest rate derivative contracts Assets | 29,900 | 9,204
Noninterest-bearing deposits | 531,962 | 599,579
Interest-bearing deposits | 1,551,995 | 1,518,424
Brokered deposits | 49,238 |
Borrowings | 180,000 | 50,000
Subordinated debentures | 35,446 | 35,262
Accrued interest payable | 3,906 | 610
Interest rate derivative contracts Liability | 0 | 5,823
Estimate of Fair Value Measurement [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 144,673 | 43,943
Equity securities at fair value | 7,262 | 8,566
Securities available for sale, at fair value (Note 2) | 490,804 | 529,749
Securities held to maturity | 334,625 | 353,901
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 9,514 | 8,581
Loans held for sale | 5,378 | 4,979
Loans to other financial institutions |  | 0
Core loans, net |  | 1,123,198
Accrued interest receivable | 10,491 | 8,949
Interest rate lock commitments | 60 | 28
Mortgage loan servicing rights | 6,050 | 5,855
Interest rate derivative contracts Assets | 29,900 | 9,204
Noninterest-bearing deposits | 531,962 | 599,579
Interest-bearing deposits | 1,549,272 | 1,514,294
Brokered deposits | 49,137 |
Borrowings | 179,041 | 50,000
Subordinated debentures | 30,751 | 30,304
Accrued interest payable | 3,906 | 610
Interest rate derivative contracts Liability | 0 | 5,823
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 144,673 | 43,943
Equity securities at fair value | 4,543 | 6,024
Securities available for sale, at fair value (Note 2) | 77,032 | 78,204
Securities held to maturity | 0 | 0
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 0 | 0
Loans held for sale | 0 | 0
Loans to other financial institutions |  | 0
Core loans, net |  | 0
Accrued interest receivable | 0 | 0
Interest rate lock commitments | 0 | 0
Mortgage loan servicing rights | 0 | 0
Interest rate derivative contracts Assets | 0 | 0
Noninterest-bearing deposits | 531,962 | 599,579
Interest-bearing deposits | 0 | 0
Brokered deposits | 0 |
Borrowings | 0 | 0
Subordinated debentures | 0 | 0
Accrued interest payable | 0 | 0
Interest rate derivative contracts Liability | 0 | 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 0 | 0
Equity securities at fair value | 0 | 0
Securities available for sale, at fair value (Note 2) | 413,772 | 451,545
Securities held to maturity | 322,107 | 338,583
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 9,514 | 8,581
Loans held for sale | 5,378 | 4,979
Loans to other financial institutions |  | 0
Core loans, net |  | 0
Accrued interest receivable | 10,491 | 8,949
Interest rate lock commitments | 60 | 28
Mortgage loan servicing rights | 6,050 | 5,855
Interest rate derivative contracts Assets | 29,900 | 9,204
Noninterest-bearing deposits | 0 | 0
Interest-bearing deposits | 1,549,272 | 1,514,294
Brokered deposits | 49,137 |
Borrowings | 179,041 | 50,000
Subordinated debentures | 30,751 | 30,304
Accrued interest payable | 3,906 | 610
Interest rate derivative contracts Liability | 0 | 5,823
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Cash and cash equivalents | 0 | 0
Equity securities at fair value | 2,719 | 2,542
Securities available for sale, at fair value (Note 2) | 0 | 0
Securities held to maturity | 12,518 | 15,318
Federal Home Loan Bank Stock and Federal Reserve Bank Stock | 0 | 0
Loans held for sale | 0 | 0
Loans to other financial institutions |  | 0
Core loans, net |  | 1,123,198
Accrued interest receivable | 0 | 0
Interest rate lock commitments | 0 | 0
Mortgage loan servicing rights | 0 | 0
Interest rate derivative contracts Assets | 0 | 0
Noninterest-bearing deposits | 0 | 0
Interest-bearing deposits | 0 | 0
Brokered deposits | 0 |
Borrowings | 0 | 0
Subordinated debentures | 0 | 0
Accrued interest payable | 0 | 0
Interest rate derivative contracts Liability | $ 0 | $ 0

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