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Note N - Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Total liabilities | $ 21,304 | $ 23,362
Total assets | 41,721 | 24,688
US Treasury Securities [Member] |  |
Total assets | 35,711 | 24,688
Corporate Bond Securities [Member] |  |
Total assets | 6,010 |
Fair Value, Inputs, Level 1 [Member] |  |
Total liabilities | 0 | 0
Total assets | 35,711 | 24,688
Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member] |  |
Total assets | 35,711 | 24,688
Fair Value, Inputs, Level 1 [Member] | Corporate Bond Securities [Member] |  |
Total assets | 0 |
Fair Value, Inputs, Level 2 [Member] |  |
Total liabilities | 0 | 0
Total assets | 6,010 | 0
Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member] |  |
Total assets | 0 | 0
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member] |  |
Total assets | 6,010 |
Fair Value, Inputs, Level 3 [Member] |  |
Total liabilities | 21,304 | 23,362
Total assets | 0 | 0
Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member] |  |
Total assets | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Corporate Bond Securities [Member] |  |
Total assets | 0 |
CVR Liability [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Total liabilities | 3,500 | 7,262
CVR Liability [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total liabilities | 0 | 0
CVR Liability [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total liabilities | 0 | 0
CVR Liability [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total liabilities | 3,500 | 7,262
Warrants [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Total liabilities | 17,804 | 16,100
Warrants [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Total liabilities | 0 | 0
Warrants [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Total liabilities | 0 | 0
Warrants [Member] | Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Total liabilities | $ 17,804 | $ 16,100

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