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Fair Value Measurements (Details Narrative) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2020 USD ($) integer | Dec. 31, 2019 USD ($) | Mar. 31, 2019 USD ($)
Number of corporate bonds | integer | 68 |  |
Unrealized loss on corporate bonds | $ 331 |  |
Realized gain on corporate bonds | 108 |  |
Amortized cost of investments | 148,998 |  |
Carrying amount of corporate bonds | 148,667 | $ 137,867 |
Carrying amount of other long-term debt | 88,959 |  | $ 88,823
Fair value of other long-term debt | 95,486 |  | $ 90,173
Fair Value, Measurements, Recurring [Member] |  |  |
Assets measured at fair value | $ 148,667 |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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