| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
The following tables present the balances of financial assets and liabilities measured at fair value on a recurring basis by level as of December 31, 2020 and 2019. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2020 | | Description | | Total | | Level 1 | | Level 2 | | Level 3 | | Financial assets: | | | | | | | | | | Investment securities available for sale: | | | | | | | | | | State and political subdivisions | | $ | 144,332 | | | $ | — | | | $ | 144,332 | | | $ | — | | | Collateralized mortgage obligations | | 140,962 | | | — | | | 140,962 | | | — | | | Mortgage-backed securities | | 83,523 | | | — | | | 83,523 | | | — | | | Collateralized loan obligations | | 51,754 | | | — | | | 51,754 | | | — | | | Derivative instrument, interest rate swap | | 492 | | | — | | | 492 | | | — | | | | | | | | | | | | Financial liabilities: | | | | | | | | | | Derivative instrument, interest rate swap | | $ | 24,340 | | | $ | — | | | $ | 24,340 | | | $ | — | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2019 | | Description | | Total | | Level 1 | | Level 2 | | Level 3 | | Financial assets: | | | | | | | | | | Investment securities available for sale: | | | | | | | | | | | | | | | | | | | State and political subdivisions | | $ | 47,178 | | | $ | — | | | $ | 47,178 | | | $ | — | | | Collateralized mortgage obligations | | 181,921 | | | — | | | 181,921 | | | — | | | Mortgage-backed securities | | 73,030 | | | — | | | 73,030 | | | — | | | Asset-backed securities | | 17,600 | | | — | | | 17,600 | | | — | | | Collateralized loan obligations | | 64,832 | | | — | | | 64,832 | | | — | | | Corporate notes | | 14,017 | | | — | | | 14,017 | | | — | | | Derivative instrument, interest rate swap | | 403 | | | — | | | 403 | | | — | | | | | | | | | | | | Financial liabilities: | | | | | | | | | | Derivative instrument, interest rate swap | | $ | 6,129 | | | $ | — | | | $ | 6,129 | | | $ | — | |
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| Fair Value, by Balance Sheet Grouping [Table Text Block] |
The following table presents the carrying amounts and approximate fair values of financial assets and liabilities as of December 31, 2020 and 2019. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2020 | | | | Carrying
Amount | | Approximate
Fair Value | | Level 1 | | Level 2 | | Level 3 | | Financial assets: | | | | | | | | | | | | Cash and due from banks | | $ | 77,693 | | | $ | 77,693 | | | $ | 77,693 | | | $ | — | | | $ | — | | | Federal funds sold | | 318,742 | | | 318,742 | | | 318,742 | | | — | | | — | | | Investment securities available for sale | | 420,571 | | | 420,571 | | | — | | | 420,571 | | | — | | | Federal Home Loan Bank stock | | 11,723 | | | 11,723 | | | 11,723 | | | — | | | — | | | Loans, net | | 2,251,139 | | | 2,329,684 | | | — | | | 2,316,867 | | | 12,817 | | | Accrued interest receivable | | 11,231 | | | 11,231 | | | 11,231 | | | — | | | — | | | Interest rate swaps | | 492 | | | 492 | | | — | | | 492 | | | — | | | Financial liabilities: | | | | | | | | | | | | Deposits | | $ | 2,700,994 | | | $ | 2,701,833 | | | $ | — | | | $ | 2,701,833 | | | $ | — | | | Federal funds purchased | | 5,375 | | | 5,375 | | | 5,375 | | | — | | | — | | | Subordinated notes, net | | 20,452 | | | 17,349 | | | — | | | 17,349 | | | — | | | Federal Home Loan Bank advances, net | | 175,000 | | | 175,000 | | | — | | | 175,000 | | | — | | | Long-term debt, net | | 21,558 | | | 21,556 | | | — | | | 21,556 | | | — | | | Accrued interest payable | | 939 | | | 939 | | | 939 | | | — | | | — | | | Interest rate swap | | 24,340 | | | 24,340 | | | — | | | 24,340 | | | — | | | Off-balance-sheet financial instruments: | | | | | | | | | | | | Commitments to extend credit | | — | | | — | | | — | | | — | | | — | | | Standby letters of credit | | — | | | — | | | — | | | — | | | — | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2019 | | | | Carrying
Amount | | Approximate
Fair Value | | Level 1 | | Level 2 | | Level 3 | | Financial assets: | | | | | | | | | | | | Cash and due from banks | | $ | 37,808 | | | $ | 37,808 | | | $ | 37,808 | | | $ | — | | | $ | — | | | Federal funds sold | | 15,482 | | | 15,482 | | | 15,482 | | | — | | | — | | | Investment securities available for sale | | 398,578 | | | 398,578 | | | — | | | 398,578 | | | — | | | Federal Home Loan Bank stock | | 12,491 | | | 12,491 | | | 12,491 | | | — | | | — | | | Loans, net | | 1,924,428 | | | 1,941,208 | | | — | | | 1,941,208 | | | — | | | Accrued interest receivable | | 7,134 | | | 7,134 | | | 7,134 | | | — | | | — | | | Interest rate swaps | | 403 | | | 403 | | | — | | | 403 | | | — | | | Financial liabilities: | | | | | | | | | | | | Deposits | | $ | 2,014,756 | | | $ | 2,015,427 | | | $ | — | | | $ | 2,015,427 | | | $ | — | | | Federal funds purchased | | 2,660 | | | 2,660 | | | 2,660 | | | — | | | — | | | Subordinated notes, net | | 20,438 | | | 18,568 | | | — | | | 18,568 | | | — | | | Federal Home Loan Bank advances, net | | 179,365 | | | 179,365 | | | — | | | 179,365 | | | — | | | Long-term debt, net | | 22,925 | | | 22,910 | | | — | | | 22,910 | | | — | | | Accrued interest payable | | 2,070 | | | 2,070 | | | 2,070 | | | — | | | — | | | Interest rate swap | | 6,129 | | | 6,129 | | | — | | | 6,129 | | | — | | | Off-balance-sheet financial instruments: | | | | | | | | | | | | Commitments to extend credit | | — | | | — | | | — | | | — | | | — | | | Standby letters of credit | | — | | | — | | | — | | | — | | | — | |
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