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Investment Securities and Other Investments (Tables) | 12 Months Ended
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Dec. 31, 2019
Schedule Of Investments [Abstract] |
Summary of Amortized Cost and Fair Values of Investment Securities | Investment securities available for sale are carried in the consolidated balance sheets at their fair value and investment securities held to maturity are carried in the consolidated balance sheets at their amortized cost. The amortized cost and fair values of investment securities at December 31, 2019 and December 31, 2018 are as follows:
|  | December 31, 2019
(Dollars in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury and agencies |  | $ | 2,500 |  |  | $ | — |  |  | $ | 51 |  |  | $ | 2,449 |
Mortgage backed securities |  |  | 94,983 |  |  |  | 654 |  |  |  | 152 |  |  |  | 95,485 |
Corporate bonds |  |  | 10,554 |  |  |  | 87 |  |  |  | 4 |  |  |  | 10,637 |
|  | $ | 108,037 |  |  | $ | 741 |  |  | $ | 207 |  |  | $ | 108,571 |
Held to maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal |  | $ | 12,192 |  |  | $ | 464 |  |  | $ | 2 |  |  | $ | 12,654 |
Total Investment Securities |  | $ | 120,229 |  |  | $ | 1,205 |  |  | $ | 209 |  |  | $ | 121,225 |
|  | December 31, 2018
(Dollars in thousands) |  | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
Available for sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal |  | $ | 1,000 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 1,003 |
U.S. Treasury and agencies |  |  | 3,375 |  |  |  | — |  |  |  | 208 |  |  |  | 3,167 |
Mortgage backed securities |  |  | 28,976 |  |  |  | 22 |  |  |  | 628 |  |  |  | 28,370 |
Corporate bonds |  |  | 5,477 |  |  |  | 78 |  |  |  | 48 |  |  |  | 5,507 |
|  | $ | 38,828 |  |  | $ | 103 |  |  | $ | 884 |  |  | $ | 38,047 |
Held to maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and municipal |  | $ | 15,565 |  |  | $ | 78 |  |  | $ | 140 |  |  | $ | 15,503 |
Total Investment Securities |  | $ | 54,393 |  |  | $ | 181 |  |  | $ | 1,024 |  |  | $ | 53,550 |
Summary of Fair Value and Gross Unrealized Losses of Securities in Continuous Unrealized Loss Position | The following table shows fair value and gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2019 and 2018, respectively. The reference point for determining when securities are in an unrealized loss position is month-end. Therefore, it is possible that a security's market value exceeded its amortized cost on other days during the past twelve-month period. Securities that have been in a continuous unrealized loss position are as follows:
(Dollars in thousands) |  |  |  |  |  |  |  |  |
December 31, 2019 |  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
State and Municipal |  | $ | 333 |  |  | $ | (2 | ) |  | $ | — |  |  | $ | — |  |  | $ | 333 |  |  | $ | (2 | )
U.S. Treasury and Agency |  | — |  |  | — |  |  |  | 1,949 |  |  |  | (51 | ) |  |  | 1,949 |  |  |  | (51 | )
Mortgage backed |  |  | 27,901 |  |  |  | (82 | ) |  |  | 5,348 |  |  |  | (70 | ) |  |  | 33,249 |  |  |  | (152 | )
Corporate bonds |  | — |  |  | — |  |  | 896 |  |  |  | (4 | ) |  | 896 |  |  |  | (4 | )
Total |  |  | 28,234 |  |  |  | (84 | ) |  |  | 8,193 |  |  |  | (125 | ) |  |  | 36,427 |  |  |  | (209 | )
(Dollars in thousands) |  |  |  |  |  |  |  |  |
December 31, 2018 |  | Less than 12 Months |  |  | 12 Months or Greater |  |  | Total |
|  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |  |  | Fair Value |  |  | Unrealized Losses |
State and Municipal |  | $ | 6,278 |  |  | $ | (105 | ) |  | $ | 2,402 |  |  | $ | (35 | ) |  | $ | 8,680 |  |  | $ | (140 | )
U.S. Treasury and Agency |  | - |  |  | - |  |  |  | 3,167 |  |  |  | (208 | ) |  |  | 3,167 |  |  |  | (208 | )
Mortgage backed |  |  | 10,031 |  |  |  | (51 | ) |  |  | 17,173 |  |  |  | (577 | ) |  |  | 27,204 |  |  |  | (628 | )
Corporate bonds |  |  | 2,114 |  |  | (36 | ) |  | 488 |  |  |  | (12 | ) |  |  | 2,602 |  |  |  | (48 | )
Total |  |  | 18,423 |  |  |  | (192 | ) |  |  | 23,230 |  |  |  | (832 | ) |  |  | 41,653 |  |  |  | (1,024 | )
Summary of Investments Classified by Contractual Maturity Date | The amortized cost and fair value of securities at December 31, 2019, by contractual maturity are shown below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
|  | December 31, 2019 |
|  | Securities Available for Sale |  | Securities Held to Maturity |
(Dollars in thousands) |  | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value |
Due in one year or less |  | $ | — |  |  | $ | — |  |  | $ | 460 |  |  | $ | 460 |
Due after one year through five years |  |  | 2,500 |  |  |  | 2,508 |  |  |  | 2,584 |  |  |  | 2,628 |
Due after five years |  |  | 18,670 |  |  |  | 18,659 |  |  |  | 3,764 |  |  |  | 3,913 |
Due after ten years |  |  | 86,867 |  |  |  | 87,404 |  |  |  | 5,384 |  |  |  | 5,653 |
Total |  | $ | 108,037 |  |  | $ | 108,571 |  |  | $ | 12,192 |  |  | $ | 12,654 |

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