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Marketable Investment Securities (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |  |
Proceeds from Sale of Held-to-maturity Securities | $ 0 | $ 0
Debt and Equity Securities, Realized Gain (Loss) | 0 | 0
Matured marketable investment securities | 4,700,000 | 10,200,000
Other than temporary impairments | $ 0 | $ 0

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- Definition Amount of realized gain (loss) on investment in debt and equity securities. + References No definition available. + Details
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- Definition This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL6284393-111563 + Details
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