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Note 7 - Debt - Key Equipment Finance Loan (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
installment
Dec. 31, 2022
USD ($)
Apr. 16, 2020
USD ($)
Debt      
Long-term Debt, Total $ 91,383    
KeyBank National Association | Equipment loans      
Debt      
Aggregate principal amount     $ 4,700
Interest rate     7.45%
Number of installments | installment 36    
Frequency of periodic payment monthly    
Long-term Debt, Total   $ 600