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Note 7 - Accounts Payable and Accrued Liabilities (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Jul. 05, 2023
Jul. 05, 2023
Jun. 29, 2023
Jun. 30, 2023
Dec. 31, 2022
Accrued Funding Proceeds       $ 7,350 $ 0
Former CEO Payable [Member]          
Employee-related Liabilities       80  
Commissions Payable [Member]          
Employee-related Liabilities         1,022
Registered Direct Offering [Member]          
Proceeds from Issuance or Sale of Equity     $ 7,400 7,350  
Accrued Funding Proceeds       7,400  
Registered Direct Offering [Member] | Subsequent Event [Member]          
Proceeds from Issuance or Sale of Equity $ 2,650 $ 10,000      
Syzygy Licensing LLC [Member]          
Accounts Payable       $ 40 $ 127