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v3.23.2

Schedule of Cash and Marketable Securities by Significant Investment Category (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost | $ 25,198,000 | $ 59,894,000
Unrealized Gain/(Loss) | (3,590,000) | (3,659,000)
Fair Value | 21,608,000 | 46,776,000
Cash and Cash Equivalents | 10,033,000 | 19,290,000
Current marketable securities | 11,575,000 | 27,307,000
Investments |  | 179,000
Fair Value, Inputs, Level 2 [Member] | Convertible Securities [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost |  | 1,023,000
Unrealized Gain/(Loss) |  |
Fair Value |  | 39,000
Cash and Cash Equivalents |  |
Current marketable securities |  |
Investments |  | 39,000
Fair Value, Inputs, Level 2 [Member] | Warrant [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost |  | 3,318,000
Unrealized Gain/(Loss) |  |
Fair Value |  | 140,000
Cash and Cash Equivalents |  |
Current marketable securities |  |
Investments |  | 140,000
Cash [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost | 9,971,000 | 19,226,000
Unrealized Gain/(Loss) |  |
Fair Value | 9,971,000 | 19,226,000
Cash and Cash Equivalents | 9,971,000 | 19,226,000
Current marketable securities |  |
Investments |  |
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost | 62,000 | 64,000
Unrealized Gain/(Loss) |  |
Fair Value | 62,000 | 64,000
Cash and Cash Equivalents | 62,000 | 64,000
Current marketable securities |  |
Investments |  |
Marketable Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Adjusted Cost | 15,165,000 | 36,263,000
Unrealized Gain/(Loss) | (3,590,000) | (3,659,000)
Fair Value | 11,575,000 | 27,307,000
Cash and Cash Equivalents |  |
Current marketable securities | $ 11,575,000 | 27,307,000
Investments |  |

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