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Financial Instruments (Tables) | 9 Months Ended
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Sep. 30, 2022
Investments, All Other Investments [Abstract] |
Schedule of Cash and Marketable Securities by Significant Investment Category | The following tables show the Company’s cash, cash equivalents, restricted cash, and marketable securities by significant investment category as of September 30, 2022, and December 31, 2021: Schedule of Cash and Marketable Securities by Significant Investment Category
|  | 2022 |
|  | Adjusted Cost |  |  | Unrealized Gain/(Loss) |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Marketable Securities |  |  | Investments |
Cash |  | $ | 21,151,000 |  |  | $ | - |  |  | $ | 21,151,000 |  |  | $ | 21,151,000 |  |  | $ | - |  |  | $ | - |
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money Market Funds |  |  | 1,694,000 |  |  |  | - |  |  |  | 1,694,000 |  |  |  | 1,694,000 |  |  |  | - |  |  |  | - |
Marketable Securities |  |  | 32,498,000 |  |  |  | (4,415,000 | ) |  |  | 28,083,000 |  |  |  | - |  |  |  | 28,083,000 |  |  |  | - |
Investment in unconsolidated subsidiaries |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  | 3,318,000 |  |  |  | (2,246,000 | ) |  |  | 1,072,000 |  |  |  | - |  |  |  | - |  |  |  | 1,072,000 |
Convertible securities |  |  | 1,023,000 |  |  |  | (725,000) |  |  |  | 298,000 |  |  |  | - |  |  |  | - |  |  |  | 298,000 |
Total |  | $ | 59,684,000 |  |  | $ | (7,386,000 | ) |  | $ | 52,298,000 |  |  | $ | 22,845,000 |  |  | $ | 28,083,000 |  |  | $ | 1,370,000 |
|  | 2021 |
|  |  | Adjusted Cost |  |  | Unrealized Gain/(Loss) |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Marketable Securities |  |  | Investments |
Cash |  |  | $ | 50,286,000 |  |  | $ | - |  |  | $ | 50,286,000 |  |  | $ | 50,286,000 |  |  | $ | - |  |  | $ | - |
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money Market Funds |  |  | $ | 6,309,000 |  |  |  | - |  |  |  | 6,309,000 |  |  |  | 6,309,000 |  |  |  | - |  |  |  | - |
Marketable Securities |  |  | $ | 12,993,000 |  |  |  | 1,544,000 |  |  |  | 14,537,000 |  |  |  | - |  |  |  | 14,537,000 |  |  |  | - |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  | $ | 3,318,000 |  |  |  | - |  |  |  | 3,318,000 |  |  |  | - |  |  |  | - |  |  |  | 3,318,000 |
Convertible securities |  |  | $ | 1,023,000 |  |  |  | - |  |  |  | 1,023,000 |  |  |  | - |  |  |  | - |  |  |  | 1,023,000 |
Total |  |  | $ | 73,929,000 |  |  | $ | 1,544,000 |  |  | $ | 75,473,000 |  |  | $ | 56,595,000 |  |  | $ | 14,537,000 |  |  | $ | 4,341,000 |

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