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Income Taxes - Net operating loss carryforwards (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Income Taxes |  |
Total NOLs | $ 30,421 | $ 27,002
Federal |  |
Income Taxes |  |
NOLs expiring between 2029 and 2037 | 43,912 |
NOLs which do not expire | 82,009 |
Total NOLs | 125,921 |
State |  |
Income Taxes |  |
NOLs expiring between 2029 and 2037 | 67,380 |
NOLs which do not expire | 18,398 |
Total NOLs | $ 85,778 |

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