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Income Taxes (Details Narrative) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Operating Loss Carryforwards [Line Items] |  |
Changes in valuation allowance | $ 7,500 | $ 2,400
Unrecognized Tax Benefits | 0 | $ 0
California Franchise Tax Board [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | $ 115,200 |
Operating Loss Carry Forwards Expiration Year | 2042 |
Domestic Tax Authority [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | $ 183,000 |
Operating Loss Carry Forwards Expiration Year | 2037 |
Operating Loss Carry forwards Not Subject To Expiration | $ 54,300 |
Operating Loss Carryforwards, Limitations on Use Percentage | 80.00% |
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Operating Loss Carryforwards | $ 6,800 |
Operating Loss Carry Forwards Expiration Year | 2042 |
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax Credit Carryforward, Amount | $ 9,200 |

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