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Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2020
Investments, All Other Investments [Abstract] |
Schedule of Cash and Marketable Securities by Significant Investment Category | The following tables show the Company’s cash and marketable securities by significant investment category as of December 31, 2020 and December 31, 2019:
|  | 2020 |
|  | Adjusted Cost |  |  | Unrealized Gain/(Loss) |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Current Marketable Securities |  |  | Investments |
Cash and cash equivalents |  | $ | 1,733,000 |  |  | $ | - |  |  | $ | 1,733,000 |  |  | $ | 1,733,000 |  |  | $ | - |  |  | $ | - |
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money Market Funds |  |  | 3,493,000 |  |  |  | - |  |  |  | 3,493,000 |  |  |  | 3,493,000 |  |  |  | - |  |  |  | - |
Marketable Securities |  |  | 5,641,000 |  |  |  | 3,495,000 |  |  |  | 9,136,000 |  |  |  | - |  |  |  | 9,136,000 |  |  |  | - |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  | 700,000 |  |  |  | 356,000 |  |  |  | 1,056,000 |  |  |  | - |  |  |  | - |  |  |  | 1,056,000 |
Total |  | $ | 11,567,000 |  |  | $ | 3,851,000 |  |  | $ | 15,418,000 |  |  | $ | 5,226,000 |  |  | $ | 9,136,000 |  |  | $ | 1,056,000 |
|  | 2019 |
|  | Adjusted Cost |  |  | Unrealized Gain/(Loss) |  |  | Fair Value |  |  | Cash and Cash Equivalents |  |  | Current Marketable Securities |  |  | Investment |
Cash and cash equivalents |  | $ | 1,096,000 |  |  | $ | - |  |  | $ | 1,096,000 |  |  | $ | 1,096,000 |  |  | $ | - |  |  | $ | - |
Level 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money Market Funds |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Marketable Securities |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Level 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total |  | $ | 1,096,000 |  |  | $ | - |  |  | $ | 1,096,000 |  |  | $ | 1,096,000 |  |  | $ | - |  |  | $ | - |

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