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Fair Value of Financial Instruments and Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2021
Fair Value Disclosures [Abstract] |
Schedule of Fair Value, by Balance Sheet Grouping | Fair value estimates of the Company’s financial instruments as of December 31, 2021 and 2020, including methods and assumptions utilized, are set forth below: Schedule of Fair Value, by Balance Sheet Grouping
(Dollars in thousands) |  | As of December 31, 2021 |
|  | Carrying amount |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 189,213 |  |  | $ | 189,213 |  |  | $ | - |  |  | $ | - |  |  | $ | 189,213 |
Interest-bearing deposits at other banks |  |  | 7,378 |  |  |  | - |  |  |  | 7,378 |  |  |  | - |  |  |  | 7,378 |
Investment securities available-for-sale |  |  | 380,717 |  |  |  | 42,675 |  |  |  | 338,042 |  |  |  | - |  |  |  | 380,717 |
Bank stocks, at cost |  |  | 2,905 |  |  |  | n/a |  |  |  | n/a |  |  |  | n/a |  |  |  | n/a |
Loans, net |  |  | 653,233 |  |  |  | - |  |  |  | - |  |  |  | 663,625 |  |  |  | 663,625 |
Loans held for sale |  |  | 4,795 |  |  |  | - |  |  |  | 4,795 |  |  |  | - |  |  |  | 4,795 |
Mortgage servicing rights |  |  | 4,193 |  |  |  | - |  |  |  | 6,722 |  |  |  | - |  |  |  | 6,722 |
Accrued interest receivable |  |  | 4,405 |  |  |  | 107 |  |  |  | 1,666 |  |  |  | 2,632 |  |  |  | 4,405 |
Derivative financial instruments |  |  | 494 |  |  |  | - |  |  |  | 494 |  |  |  | - |  |  |  | 494 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-maturity deposits |  | $ | (1,042,374 | ) |  | $ | (1,042,374 | ) |  | $ | - |  |  | $ | - |  |  | $ | (1,042,374 | )
Certificates of deposit |  |  | (106,107 | ) |  |  | - |  |  |  | (105,935 | ) |  |  | - |  |  |  | (105,935 | )
Subordinated debentures |  |  | (21,651 | ) |  |  | - |  |  |  | (16,375 | ) |  |  | - |  |  |  | (16,375 | )
Other borrowings |  |  | (7,403 | ) |  |  | - |  |  |  | (7,403 | ) |  |  | - |  |  |  | (7,403 | )
Accrued interest payable |  |  | (125 | ) |  |  | - |  |  |  | (125 | ) |  |  | - |  |  |  | (125 | )
(Dollars in thousands) |  |  | As of December 31, 2020 |
|  |  | Carrying amount |  |  |  | Level 1 |  |  |  | Level 2 |  |  |  | Level 3 |  |  |  | Total |
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 84,818 |  |  | $ | 84,818 |  |  | $ | - |  |  | $ | - |  |  | $ | 84,818 |
Interest-bearing deposits at other banks |  |  | 5,460 |  |  |  | - |  |  |  | 5,460 |  |  |  | - |  |  |  | 5,460 |
Investment securities available-for-sale |  |  | 291,810 |  |  |  | 2,037 |  |  |  | 289,773 |  |  |  | - |  |  |  | 291,810 |
Bank stocks, at cost |  |  | 4,473 |  |  |  | n/a |  |  |  | n/a |  |  |  | n/a |  |  |  | n/a |
Loans, net |  |  | 702,782 |  |  |  | - |  |  |  | - |  |  |  | 718,071 |  |  |  | 718,071 |
Loans held for sale |  |  | 15,533 |  |  |  | - |  |  |  | 15,533 |  |  |  | - |  |  |  | 15,533 |
Mortgage servicing rights |  |  | 3,726 |  |  |  | - |  |  |  | 4,361 |  |  |  | - |  |  |  | 4,361 |
Accrued interest receivable |  |  | 4,885 |  |  |  | - |  |  |  | 1,697 |  |  |  | 3,188 |  |  |  | 4,885 |
Derivative financial instruments |  |  | 1,796 |  |  |  | - |  |  |  | 1,796 |  |  |  | - |  |  |  | 1,796 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-maturity deposits |  | $ | (882,277 | ) |  | $ | (882,277 | ) |  | $ | - |  |  | $ | - |  |  | $ | (882,277 | )
Certificates of deposit |  |  | (133,750 | ) |  |  | - |  |  |  | (134,048 | ) |  |  | - |  |  |  | (134,048 | )
Subordinated debentures |  |  | (21,651 | ) |  |  | - |  |  |  | (15,232 | ) |  |  | - |  |  |  | (15,232 | )
Other borrowings |  |  | (6,371 | ) |  |  | - |  |  |  | (6,371 | ) |  |  | - |  |  |  | (6,371 | )
Accrued interest payable |  |  | (168 | ) |  |  | - |  |  |  | (168 | ) |  |  | - |  |  |  | (168 | )
Derivative financial instruments |  |  | (466 | ) |  |  | - |  |  |  | (466 | ) |  |  | - |  |  |  | (466 | )
Schedule of Fair Value, Assets Measured On Recurring Basis | The following table represents the Company’s financial instruments that are measured at fair value on a recurring basis at December 31, 2021 and 2020, allocated to the appropriate fair value hierarchy: Schedule of Fair Value, Assets Measured On Recurring Basis
(Dollars in thousands) |  |  |  |  | As of December 31, 2021 |
|  |  |  |  | Fair value hierarchy |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. treasury securities |  | $ | 42,675 |  |  | $ | 42,675 |  |  | $ | - |  |  | $ | - |
U. S. federal agency obligations |  |  | 17,195 |  |  |  | - |  |  |  | 17,195 |  |  |  | - |
Municipal obligations, tax exempt |  |  | 137,984 |  |  |  | - |  |  |  | 137,984 |  |  |  | - |
Municipal obligations, taxable |  |  | 40,046 |  |  |  | - |  |  |  | 40,046 |  |  |  | - |
Agency mortgage-backed securities |  |  | 142,817 |  |  |  | - |  |  |  | 142,817 |  |  |  | - |
Loans held for sale |  |  | 4,795 |  |  |  | - |  |  |  | 4,795 |  |  |  | - |
Derivative financial instruments |  |  | 494 |  |  |  | - |  |  |  | 494 |  |  |  | - |
(Dollars in thousands) |  |  |  |  | As of December 31, 2020 |
|  |  |  |  | Fair value hierarchy |
|  | Total |  |  | Level 1 |  |  | Level 2 |  |  | Level 3 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U. S. treasury securities |  | $ | 2,037 |  |  | $ | 2,037 |  |  | $ | - |  |  | $ | - |
U. S. federal agency obligations |  |  | 18,924 |  |  |  | - |  |  |  | 18,924 |  |  |  | - |
Municipal obligations, tax exempt |  |  | 142,676 |  |  |  | - |  |  |  | 142,676 |  |  |  | - |
Municipal obligations, taxable |  |  | 49,535 |  |  |  | - |  |  |  | 49,535 |  |  |  | - |
Agency mortgage-backed securities |  |  | 78,638 |  |  |  | - |  |  |  | 78,638 |  |  |  | - |
Loans held for sale |  |  | 15,533 |  |  |  | - |  |  |  | 15,533 |  |  |  | - |
Derivative financial instruments |  |  | 1,796 |  |  |  | - |  |  |  | 1,796 |  |  |  | - |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative financial instruments |  |  | (466 | ) |  |  | - |  |  |  | (466 | ) |  |  | - |
Schedule of Fair Value Contractual Balance and Gain Loss On Loans Held for Sale | The aggregate fair value, contractual balance (including accrued interest), and gain or loss on loans held for sale were as follows: Schedule of Fair Value Contractual Balance and Gain Loss On Loans Held for Sale
|  | As of December 31, |
(Dollars in thousands) |  | 2021 |  |  | 2020 |
Aggregate fair value |  | $ | 4,795 |  |  | $ | 15,533 |
Contractual balance |  |  | 4,651 |  |  |  | 15,151 |
Gain |  | $ | 144 |  |  | $ | 382 |
Schedule of Gains and Losses from Changes in Fair Value of Loans Held for Sale | Schedule of Gains and Losses from Changes in Fair Value of Loans Held for Sale
|  | As of December 31, |
(Dollars in thousands) |  | 2021 |  |  | 2020 |  |  | 2019 |
Total change in fair value |  | $ | (836 | ) |  | $ | 848 |  |  | $ | (15 | )
Schedule of Fair Value Measurements On Nonrecurring, Valuation Techniques | The following table presents quantitative information about Level 3 fair value measurements for impaired loans measure at fair value on a non-recurring basis as of December 31, 2021 and 2020. Schedule of Fair Value Measurements On Nonrecurring, Valuation Techniques
(Dollars in thousands) |  |  |  |  |  |  |  |  |  |
|  | Fair value |  |  | Valuation technique |  | Unobservable inputs |  | Range |
As of December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |
Commercial loans |  | $ | 5 |  |  | Sales comparison |  | Adjustment to comparable value |  |  | 0 | %
As of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Impaired loans: |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate |  | $ | 3,640 |  |  | Sales comparison |  | Adjustment to appraised value |  |  | 20 | %
Commercial loans |  |  | 74 |  |  | Sales comparison |  | Adjustment to comparable sales |  |  | 0%-69 | %
Agriculture loans |  |  | 9 |  |  | Sales comparison |  | Adjustment to appraised value |  |  | 20 | %
Real estate owned: |  |  |  |  |  |  |  |  |  |  |  |
One-to-four family residential real estate |  |  | 48 |  |  | Sales comparison |  | Adjustment to appraised value |  |  | 10 | %

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