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Note 18 - Income Taxes - Components of Income Tax Expense (Benefit) Applicable to Continuing Operations (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Current:    
Federal $ 0 $ 0
State 3 6
Foreign 616 52
Total current income tax expense 619 58
Deferred:    
Federal 0 0
State 0 0
Foreign 329 1,015
Total deferred income tax expense 329 1,015
Income tax expense, net $ 948 $ 1,073