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Note 2 - Revenue Recognition - Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Trade receivables $ 37,209 $ 30,307
Deferred revenues 3,599 3,018
Trade Receivables [Member]    
Contract with customer asset, balance 15,969 8,433
Accrued Revenues [Member] | Licensing and Other [Member]    
Contract with customer asset, balance 8,266 9,735
Accrued Revenues [Member] | Royalty [Member]    
Contract with customer asset, balance 12,974 12,139
Other Noncurrent Assets [Member] | Licensing and Other [Member]    
Contract with customer asset, balance 2,583 0
Deferred Revenue [Member]    
Deferred revenues $ 3,599 $ 3,018