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Note 10 - Long-term Debt (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Long-Term Debt Instruments [Table Text Block]

Long-term debt at closing of Pharmakon loan

  $ 75,000  

Capitalized costs and discounts

    (4,207 )

Interest expense

    5,215  

Amounts paid and payable

    (4,138 )

Carrying value of Pharmakon loan as of September 30, 2022

  $ 71,870