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INVESTMENTS | 12 Months Ended
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Dec. 31, 2019
INVESTMENTS |
INVESTMENTS | 5. INVESTMENTS 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
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)
At each reporting date, the Company reviews its investments to determine whether a decline in fair value below the amortized cost basis is other-than-temporary. To determine whether a decline in value is other-than-temporary, the Company considers all available evidence, including the issuer’s financial condition, the severity and duration of the decline in fair value, and the Company’s intent and ability to hold the investment for a reasonable period of time sufficient for any forecasted recovery. If a decline in value is deemed other-than-temporary, the Company records a reduction in the carrying value to the estimated fair value. The Company determined that no other-than-temporary impairment exists for the years ended December 31, 2019 and 2018.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 + Details
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