Fair Value Measurements (Details Narrative) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) integer	Dec. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)
Number of corporate bonds \| integer	20
Unrealized gain on corporate bonds	$ 345
Amortized cost of investments	51,171
Carrying amount of corporate bonds	51,171	$ 75,609
Carrying amount of other long-term debt	178,321		$ 88,959
Fair value of other long-term debt	169,355		$ 95,486
Fair Value, Measurements, Recurring [Member]
Assets measured at fair value	$ 51,171

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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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).

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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