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Note 19 - Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Net operating losses $ 40,689 $ 36,943
Stock options 573 665
Research and development credits 641 641
Accruals 311 477
Operating lease liabilities 245 368
Property and equipment 18 28
Acquisition assets 0 2,257
Other deferred tax assets 6 6
Deferred tax liabilities:    
Total deferred tax assets 42,483 41,385
Operating lease right-of-use assets (245) (337)
Total deferred tax liabilities (245) (337)
Valuation allowance (42,238) (41,048)
Net deferred taxes $ 0 $ 0