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Note 15 - Related Party Transactions - Revenue From 4Life Agreement (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenue $ 73 $ 107
Related Party [Member]    
Revenue 72 106
Product [Member]    
Revenue 44 64
Product [Member] | Related Party [Member]    
Revenue 43 63
Royalty [Member]    
Revenue 29 43
Royalty [Member] | Related Party [Member]    
Revenue $ 29 $ 43