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Note 4 - Sale of Neos Brand and Related Assets (Details Textual) - NEOS Brand [Member] - SureWerx [Member] - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
$ in Millions
12 Months Ended
Dec. 31, 2022
USD ($)
Disposal Group, Including Discontinued Operation, Consideration $ 5.8
Sales [Member]  
Disposal Group, Including Discontinued Operation, Revenue From Sale of Inventory 3.6
Cost of Sales [Member]  
Disposal Group, Including Discontinued Operation, Cost of Inventory 2.4
Operating Expense [Member]  
Reduction in Operating Expense From Sale of Assets in Disposal Group, Including Discontinued Operation $ 0.7