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Income Taxes (Schedule of Deferred Tax Assets) (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryovers | $ 95,131 | $ 84,651
Stock compensation and other | 1,537 | 1,946
Change in fair value of warrant liabilities | 59 | 59
Amortization of license | 9,672 | 11,856
Lease liability | 326 | 929
Accruals and reserves | 1,922 | 1,841
Startup costs | 4 | 5
Tax credits | 19,046 | 18,189
174 Capitalization | 24,437 | 28,800
Total deferred tax assets | 152,134 | 148,276
Less: valuation allowance | (152,104) | (147,694)
Net deferred tax assets | 30 | 582
Deferred tax liabilities: |  |
Right of use asset | (30) | (582)
Total deferred tax assets, net | $ 0 | $ 0

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