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Note 12 - Subsequent Events (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
May 13, 2024
May 01, 2024
Pre-funded Warrants [Member] | Private Placement [Member]    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 3.384  
Forecast [Member] | Pre-funded Warrants [Member]    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 0.005  
Forecast [Member] | Pre-funded Warrants [Member] | Private Placement [Member]    
Proceeds from Issuance of Warrants $ 10,000  
Forecast [Member] | True North Loyalty, LLC [Member]    
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates   $ 1,100
Forecast [Member] | True North Loyalty, LLC [Member] | Divestiture of Interest, Consideration, Deferred Payment Forgiveness [Member]    
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates   500
Forecast [Member] | True North Loyalty, LLC [Member] | Divestiture of Interest, Consideration, Closing Net Working Capital [Member]    
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates   130
Forecast [Member] | True North Loyalty, LLC [Member] | Divestiture of Interest, Consideration, Share of Contribution Margin [Member]    
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates   $ 500
True North Loyalty, LLC [Member] | Forecast [Member]    
Subsidiary, Ownership Percentage, Parent   100.00%