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Note 5 - Revenue Recognition - Assets and Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Total current assets $ 38,630 $ 30,307
Deferred revenues 3,418 3,018
Trade Receivables [Member]    
Trade receivables 15,250 8,433
Accrued Revenues [Member] | Licensing and Other [Member]    
Trade receivables 12,522 9,735
Accrued Revenues [Member] | Royalty [Member]    
Trade receivables 10,858 12,139
Other Noncurrent Assets [Member] | Licensing and Other [Member]    
Trade receivables 2,733 0
Deferred Revenue [Member]    
Deferred revenues $ 3,418 $ 3,018