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Note 5 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Revenue $ 22,072 $ 26,262
Transferred at Point in Time [Member]    
Revenue 20,111 22,635
Transferred over Time [Member]    
Revenue 1,961 3,627
Connectivity Products [Member]    
Revenue 18,006 21,589
Smart Sensing Products [Member]    
Revenue 4,066 4,673
UNITED STATES    
Revenue 2,538 2,352
Europe and Middle East [Member]    
Revenue 1,512 2,809
Asia Pacific [Member]    
Revenue [1] 18,009 20,626
Other [Member]    
Revenue 13 475
License [Member]    
Revenue 11,414 18,248
License [Member] | Transferred at Point in Time [Member]    
Revenue 9,453 14,621
License [Member] | Transferred over Time [Member]    
Revenue 1,961 3,627
License [Member] | Connectivity Products [Member]    
Revenue 10,067 15,924
License [Member] | Smart Sensing Products [Member]    
Revenue 1,347 2,324
License [Member] | UNITED STATES    
Revenue 383 702
License [Member] | Europe and Middle East [Member]    
Revenue 601 1,950
License [Member] | Asia Pacific [Member]    
Revenue 10,417 15,121
License [Member] | Other [Member]    
Revenue 13 475
Royalty [Member]    
Revenue 10,658 8,014
Royalty [Member] | Transferred at Point in Time [Member]    
Revenue 10,658 8,014
Royalty [Member] | Connectivity Products [Member]    
Revenue 7,939 5,665
Royalty [Member] | Smart Sensing Products [Member]    
Revenue 2,719 2,349
Royalty [Member] | UNITED STATES    
Revenue 2,155 1,650
Royalty [Member] | Europe and Middle East [Member]    
Revenue 911 859
Royalty [Member] | Asia Pacific [Member]    
Revenue $ 7,592 $ 5,505
[1] China