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Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Schedule of Investments [Abstract] |
Schedule of Available-for-sale Securities | A summary of investment securities available-for-sale is as follows: Schedule of Available-for-sale Securities
(Dollars in thousands) |  | As of December 31, 2021 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
U. S. treasury securities |  | $ | 43,098 |  |  | $ | - |  |  | $ | (423 | ) |  | $ | 42,675 |
U. S. federal agency obligations |  |  | 17,165 |  |  |  | 67 |  |  |  | (37 | ) |  |  | 17,195 |
Municipal obligations, tax exempt |  |  | 133,558 |  |  |  | 4,488 |  |  |  | (62 | ) |  |  | 137,984 |
Municipal obligations, taxable |  |  | 39,011 |  |  |  | 1,171 |  |  |  | (136 | ) |  |  | 40,046 |
Agency mortgage-backed securities |  |  | 142,747 |  |  |  | 1,339 |  |  |  | (1,269 | ) |  |  | 142,817 |
Total |  | $ | 375,579 |  |  | $ | 7,065 |  |  | $ | (1,927 | ) |  | $ | 380,717 |
|  | As of December 31, 2020 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Estimated |
|  | cost |  |  | gains |  |  | losses |  |  | fair value |
U. S. treasury securities |  | $ | 2,000 |  |  | $ | 37 |  |  | $ | - |  |  | $ | 2,037 |
U. S. federal agency obligations |  |  | 18,804 |  |  |  | 138 |  |  |  | (18 | ) |  |  | 18,924 |
Municipal obligations, tax exempt |  |  | 136,321 |  |  |  | 6,367 |  |  |  | (12 | ) |  |  | 142,676 |
Municipal obligations, taxable |  |  | 46,643 |  |  |  | 2,892 |  |  |  | - |  |  |  | 49,535 |
Agency mortgage-backed securities |  |  | 75,530 |  |  |  | 3,108 |  |  |  | - |  |  |  | 78,638 |
Total |  | $ | 279,298 |  |  | $ | 12,542 |  |  | $ | (30 | ) |  | $ | 291,810 |
Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value | The tables above show that some of the securities in the available-for-sale investment portfolio had unrealized losses, or were temporarily impaired, as of December 31, 2021 and 2020. This temporary impairment represents the estimated amount of loss that would be realized if the securities were sold on the valuation date. Securities which were temporarily impaired are shown below, along with the length of time in a continuous unrealized loss position. Schedule of Available for Sale Securities Continuous Unrealized Loss Position Fair Value
(Dollars in thousands) |  |  |  |  | As of December 31, 2021 |
|  |  |  |  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | No. of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | securities |  |  | value |  |  | losses |  |  | value |  |  | losses |  |  | value |  |  | losses |
U. S. treasury securities |  |  | 28 |  |  | $ | 42,675 |  |  | $ | (423 | ) |  | $ | - |  |  | $ | - |  |  | $ | 42,675 |  |  | $ | (423 | )
U. S. federal agency obligations |  |  | 6 |  |  | $ | 12,073 |  |  | $ | (30 | ) |  | $ | 3,048 |  |  | $ | (7 | ) |  |  | 15,121 |  |  |  | (37 | )
Municipal obligations, tax exempt |  |  | 37 |  |  |  | 12,411 |  |  |  | (46 | ) |  |  | 1,879 |  |  |  | (16 | ) |  |  | 14,290 |  |  |  | (62 | )
Municipal obligations, taxable |  |  | 13 |  |  |  | 8,802 |  |  |  | (136 | ) |  |  | - |  |  |  | - |  |  |  | 8,802 |  |  |  | (136 | )
Agency mortgage-backed securities |  |  | 28 |  |  |  | 95,028 |  |  |  | (1,269 | ) |  |  | - |  |  |  | - |  |  |  | 95,028 |  |  |  | (1,269 | )
Total |  |  | 112 |  |  | $ | 170,989 |  |  | $ | (1,904 | ) |  | $ | 4,927 |  |  | $ | (23 | ) |  | $ | 175,916 |  |  | $ | (1,927 | )
|  |  |  |  | As of December 31, 2020 |
|  |  |  |  | Less than 12 months |  |  | 12 months or longer |  |  | Total |
|  | No. of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | securities |  |  | value |  |  | losses |  |  | value |  |  | losses |  |  | value |  |  | losses |
U.S. federal agency obligations |  |  | 4 |  |  | $ | 11,772 |  |  | $ | (18 | ) |  | $ | - |  |  | $ | - |  |  | $ | 11,772 |  |  | $ | (18 | )
Municipal obligations, tax exempt |  |  | 12 |  |  |  | 4,191 |  |  |  | (12 | ) |  |  | - |  |  |  | - |  |  |  | 4,191 |  |  |  | (12 | )
Total |  |  | 16 |  |  | $ | 15,963 |  |  | $ | (30 | ) |  | $ | - |  |  | $ | - |  |  | $ | 15,963 |  |  | $ | (30 | )
Schedule of Investments Classified by Contractual Maturity Date | The table below includes scheduled principal payments and estimated prepayments, based on observable market inputs, for agency mortgage-backed securities. Actual maturities will differ from contractual maturities because borrowers have the right to prepay obligations with or without prepayment penalties. The amortized cost and fair value of investment securities at December 31, 2021 are as follows: Schedule of Investments Classified by Contractual Maturity Date
(Dollars in thousands) |  | Amortized |  |  | Estimated |
|  | cost |  |  | fair value |
Due in less than one year |  | $ | 18,859 |  |  | $ | 18,921 |
Due after one year but within five years |  |  | 256,749 |  |  |  | 257,619 |
Due after five years but within ten years |  |  | 52,372 |  |  |  | 54,243 |
Due after ten years |  |  | 47,599 |  |  |  | 49,934 |
Total |  | $ | 375,579 |  |  | $ | 380,717 |
Schedule of Realized Gain (loss) | Sales proceeds and gross realized gains and losses on sales of available-for-sale securities are as follows: Schedule of Realized Gain (loss)
|  | 2021 |  |  | 2020 |  |  | 2019 |
(Dollars in thousands) |  | Years ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Sales proceeds |  | $ | 16,623 |  |  | $ | 61,163 |  |  | $ | 15,318 |
Realized gains |  | $ | 1,138 |  |  | $ | 2,449 |  |  | $ | 2 |
Realized losses |  |  | - |  |  |  | (1 | ) |  |  | (179 | )
Net realized gains |  | $ | 1,138 |  |  | $ | 2,448 |  |  | $ | (177 | )

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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