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Note 4 - Asset Sale (Details Textual) - NEOS Brand [Member] - SureWerx [Member] - Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] - USD ($)
$ in Millions
12 Months Ended
Sep. 30, 2022
Dec. 31, 2022
Disposal Group, Including Discontinued Operation, Consideration $ 5.8  
Proceeds from Divestiture of Businesses 5.5  
Disposal Group, Including Discontinued Operation, Consideration, Remaining Balance Deposited With Escrow Agent 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