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Income taxes - Deferred tax (liabilities) assets, net (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred Tax Assets: |  |
Impairment | $ 1,134 | $ 1,147
Accruals | 107 | 108
Reserves | 52 | 75
Interest carryforward | 31 | 31
Net operating losses | 3,849 | 2,387
Other | 60 | 40
Financial Instruments | 1,392 |
Start-up costs | 982 |
UNICAP 263A | 175 | 395
Valuation allowance | (7,011) | (3,583)
Total deferred tax assets | 771 | 600
Deferred Tax Liabilities: |  |
Prepaid Expense | (162) | (24)
Other | (30) | (157)
Depreciation | (597) | (509)
Total deferred tax liabilities | (789) | (690)
Deferred tax (liabilities) assets, net | $ (18) | $ (90)

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