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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets (liabilities): |  |
Accrued expenses | $ 131 | $ 147
Deferred revenue | 36 | 129
Stock-based compensation | 56 | 420
Fixed assets | 4 | 116
Goodwill | 0 | 28
Inventory | 156 | 106
Intangible amortization | 32 |
Intangible amortization |  | (80)
Section 174 research and experimentation | 0 | 409
Section 163(j) interest expense | 314 | 0
R&D credit | 2,154 | 2,154
Texas margin tax temporary credit | 55 | 74
Other | 61 | 101
Total deferred tax asset, net of deferred tax liabilities | 38,380 | 38,492
Valuation allowance | (38,380) | (38,492)
Net deferred tax asset | 0 | 0
Federal |  |
Deferred tax assets (liabilities): |  |
Tax benefit of operating loss carry forward | 29,416 | 28,459
State |  |
Deferred tax assets (liabilities): |  |
Tax benefit of operating loss carry forward | $ 5,965 | $ 6,429

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