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Fair Value Measurements (Details Narrative) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) integer | Sep. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Number of corporate bonds | integer |  |  | 46 |  |
Unrealized gain on corporate bonds | $ 1,117 |  | $ 1,117 |  |
Realized gain on corporate bonds | 55 | $ 144 | 297 | $ 591 |
Amortized cost of investments | 103,507 |  | 103,507 |  |
Carrying amount of corporate bonds | 104,624 |  | 104,624 |  | $ 137,867
Carrying amount of other long-term debt | 89,027 | 88,891 | 89,027 | 88,891 |
Fair value of other long-term debt | 95,138 | $ 94,658 | 95,138 | $ 94,658 |
Fair Value, Measurements, Recurring [Member] |  |  |  |  |
Assets measured at fair value | $ 104,624 |  | $ 104,624 |  |

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
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