Annual report pursuant to Section 13 and 15(d)

Note 14 - Income Taxes - Deferred Tax Assets (Details)

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Note 14 - Income Taxes - Deferred Tax Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Notes To Financial Statements [Abstract]    
Net operating losses carried forward $ 60,092 $ 49,286
Research and development expenditures 5,023 5,032
Property, equipment, and other intangible assets 7,264 7,261
Research and development tax credits 4,968 4,202
Financing costs 873 1,580
Right-of-use assets 2 40
Total deferred tax assets 78,222 67,401
Valuation allowance (78,222) (67,401)
Net deferred tax asset $ 0 $ 0