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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2019
INVESTMENTS |
Schedule of Marketable securities | Below is a summary of the amortized cost and estimated market values of the Company’s marketable securities at December 31, 2019 and 2018. The estimated market values provided are Level 2 valuations as defined by ASC 820.
|  | 2019 |  | 2018
|  | Amortized Cost |  | Market Value |  | Amortized Cost |  | Market Value
|  | (Dollars in thousands)
Municipal bonds: |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 5,904 |  | $ | 5,915 |  | $ | 1,525 |  | $ | 1,532
Due from one through five years |  |  | 8,336 |  |  | 8,621 |  |  | 9,752 |  |  | 9,861
Due from six through ten years |  |  | 4,255 |  |  | 4,618 |  |  | 6,239 |  |  | 6,433
Due from eleven through twenty years |  |  | 3,223 |  |  | 3,430 |  |  | 2,711 |  |  | 2,713
Total |  | $ | 21,718 |  | $ | 22,584 |  | $ | 20,227 |  | $ | 20,539
Schedule of Unrealized gains and losses | The unrealized gains and losses on marketable securities at December 31, 2019 and 2018 were as follows:
|  | 2019 |  | 2018
|  | Unrealized |  | Unrealized |  | Unrealized |  | Unrealized
|  | Gains |  | Losses |  | Gains |  | Losses
|  | (Dollars in thousands)
Municipal bonds |  | $ | 866 |  | $ | — |  | $ | 388 |  | $ | (76)

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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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