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Note 5 - Asset Sale (Details Textual) - NEOS Brand [Member] - SureWerx [Member] - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
USD ($)
Disposal Group, Including Discontinued Operation, Consideration $ 5.8 $ 5.8 $ 5.8
Proceeds from Divestiture of Businesses 5.5    
Disposal Group, Including Discontinued Operation, Consideration, Remaining Balance Deposited With Escrow Agent $ 0.3 0.3 0.3
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 $ 0.7