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INVESTMENT SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Schedule of amortized cost and estimated fair values of available-for-sale | AVAILABLE-FOR-SALE:
(Dollars in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
US Treasury securities |  | $ | 7,190 |  |  | $ | 16 |  |  | $ | 3 |  |  | $ | 7,203 |
Government Sponsored Enterprises |  |  | 984 |  |  |  | 17 |  |  |  | — |  |  |  | 1,001 |
Mortgage-backed securities |  |  | 182,736 |  |  |  | 1,490 |  |  |  | 640 |  |  |  | 183,586 |
Small Business Administration pools |  |  | 45,301 |  |  |  | 259 |  |  |  | 217 |  |  |  | 45,343 |
State and local government |  |  | 47,418 |  |  |  | 2,371 |  |  |  | 141 |  |  |  | 49,648 |
Corporate and other securities |  |  | 19 |  |  |  | — |  |  |  | — |  |  |  | 19 |
|  | $ | 283,648 |  |  | $ | 4,153 |  |  | $ | 1,001 |  |  | $ | 286,800 |
(Dollars in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US Treasury securities |  | $ | 15,488 |  |  | $ | 9 |  |  | $ | 40 |  |  | $ | 15,457 |
Government Sponsored Enterprises |  |  | 1,096 |  |  |  | 6 |  |  |  | 2 |  |  |  | 1,100 |
Mortgage-backed securities |  |  | 117,862 |  |  |  | 73 |  |  |  | 2,460 |  |  |  | 115,475 |
Small Business Administration pools |  |  | 55,784 |  |  |  | 247 |  |  |  | 695 |  |  |  | 55,336 |
State and local government |  |  | 50,599 |  |  |  | 619 |  |  |  | 712 |  |  |  | 50,506 |
Corporate and other securities |  |  | 19 |  |  |  | — |  |  |  | — |  |  |  | 19 |
|  | $ | 240,848 |  |  | $ | 954 |  |  | $ | 3,909 |  |  | $ | 237,893 |
Schedule of amortized cost and estimated fair values of held-to-maturity securities | HELD-TO-MATURITY
(Dollars in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |
State and local government |  | $ | 16,174 |  |  | $ | 50 |  |  | $ | 40 |  |  | $ | 16,184 |
|  | $ | 16,174 |  |  | $ | 50 |  |  | $ | 40 |  |  | $ | 16,184 |
Schedule of the amortized cost and fair value of investment securities by expected maturity |
(Dollars in thousands) |  | Available-for-sale |  |  | Held-to-maturity |
|  | Amortized Cost |  |  | Fair Value |  |  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 9,965 |  |  | $ | 10,010 |  |  | $ | — |  |  | $ | — |
Due after one year through five years |  |  | 123,319 |  |  |  | 124,056 |  |  |  | — |  |  |  | — |
Due after five years through ten years |  |  | 127,722 |  |  |  | 130,034 |  |  |  | — |  |  |  | — |
Due after ten years |  |  | 22,642 |  |  |  | 22,700 |  |  |  | — |  |  |  | — |
|  | $ | 283,648 |  |  | $ | 286,800 |  |  | $ | — |  |  | $ | — |
Schedule of gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous loss position | The following tables show gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous loss position at December 31, 2019 and December 31, 2018.
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
December 31, 2019 (Dollars in thousands) |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US Treasury |  | $ | — |  |  | $ | — |  |  | $ | 1,508 |  |  | $ | 3 |  |  | $ | 1,508 |  |  | $ | 3 |
Mortgage-Backed Securities |  |  | 57,175 |  |  |  | 485 |  |  |  | 12,419 |  |  |  | 155 |  |  |  | 69,594 |  |  |  | 640 |
Small Business Administration pools |  |  | 7,891 |  |  |  | 53 |  |  |  | 13,502 |  |  |  | 164 |  |  |  | 21,393 |  |  |  | 217 |
State and local government |  |  | 5,695 |  |  |  | 141 |  |  |  | — |  |  |  | — |  |  |  | 5,695 |  |  |  | 141 |
Total |  | $ | 70,761 |  |  | $ | 679 |  |  | $ | 27,429 |  |  | $ | 322 |  |  | $ | 98,190 |  |  | $ | 1,001 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
December 31, 2018 (Dollars in thousands) |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Available-for-sale securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
US Treasury |  | $ | — |  |  | $ | — |  |  | $ | 1,505 |  |  | $ | 40 |  |  | $ | 1,505 |  |  | $ | 40 |
Government Sponsored Enterprise |  |  | — |  |  |  | — |  |  |  | 122 |  |  |  | 2 |  |  |  | 122 |  |  |  | 2 |
Mortgage-backed securities |  |  | 13,917 |  |  |  | 120 |  |  |  | 89,870 |  |  |  | 2,340 |  |  |  | 103,787 |  |  |  | 2,460 |
Small Business Administration pools |  |  | 16,400 |  |  |  | 211 |  |  |  | 20,330 |  |  |  | 484 |  |  |  | 36,730 |  |  |  | 695 |
State and local government |  |  | 9,517 |  |  |  | 52 |  |  |  | 15,598 |  |  |  | 660 |  |  |  | 25,115 |  |  |  | 712 |
Total |  | $ | 48,189 |  |  | $ | 394 |  |  | $ | 127,408 |  |  | $ | 3,515 |  |  | $ | 175,597 |  |  | $ | 3,909 |
|  | Less than 12 months |  |  | 12 months or more |  |  | Total |
December 31, 2018 (Dollars in thousands) |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State and local government |  | $ | 2,843 |  |  | $ | 14 |  |  | $ | 4,899 |  |  | $ | 26 |  |  | $ | 7,742 |  |  | $ | 40 |
Total |  | $ | 2,843 |  |  | $ | 14 |  |  | $ | 4,899 |  |  | $ | 26 |  |  | $ | 7,742 |  |  | $ | 40 |

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- Definition Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
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