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Note 13 - Income Tax - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Organizational Costs, Start-up and Intangible Assets | $ 2,309 | $ 5,068
Stock Based Compensation | 1,842 | 1,174
NOLs, Unabsorbed Depreciation and R&D Credits C/F's | 68,201 | 61,624
Interest expense carryover | 22,374 | 17,436
Accrued Expenses | 2,001 | 3,312
Operating Lease Liability | 1,512 | 1,082
Other, net | 113 | 737
Total Deferred Tax Assets | 105,679 | 95,392
Valuation Allowance | (95,214) | (83,260)
Net Deferred Tax Assets | 10,465 | 12,133
Right of Use Asset | (1,477) | (1,238)
Property, Plant & Equipment | (9,788) | (10,882)
Other, net | (10) | (13)
Total Deferred Tax Liabilities | (11,275) | (12,133)
Net Deferred Tax Liabilities | (810) | 0
Ethanol Credits [Member] |  |
Deffered tax assets, tax credit carryforwards | 1,500 | 1,500
Carbon Oxide Sequestration Credit Carryforward [Member] |  |
Deffered tax assets, tax credit carryforwards | $ 5,827 | $ 3,460

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