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Note 4 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenues $ 24,245 $ 22,072
Transferred at Point in Time [Member]    
Revenues 20,593 20,111
Transferred over Time [Member]    
Revenues 3,652 1,961
Connectivity Products [Member]    
Revenues 20,445 18,006
Smart Sensing Products [Member]    
Revenues 3,800 4,066
UNITED STATES    
Revenues 3,619 2,538
Europe and Middle East [Member]    
Revenues 1,484 1,512
Asia Pacific [Member]    
Revenues [1] 19,142 18,009
Other [Member]    
Revenues 0 13
License [Member]    
Revenues 15,042 11,414
License [Member] | Transferred at Point in Time [Member]    
Revenues 11,390 9,453
License [Member] | Transferred over Time [Member]    
Revenues 3,652 1,961
License [Member] | Connectivity Products [Member]    
Revenues 13,513 10,067
License [Member] | Smart Sensing Products [Member]    
Revenues 1,529 1,347
License [Member] | UNITED STATES    
Revenues 2,415 383
License [Member] | Europe and Middle East [Member]    
Revenues 506 601
License [Member] | Asia Pacific [Member]    
Revenues 12,121 10,417
License [Member] | Other [Member]    
Revenues 0 13
Royalty [Member]    
Revenues 9,203 10,658
Royalty [Member] | Transferred at Point in Time [Member]    
Revenues 9,203 10,658
Royalty [Member] | Connectivity Products [Member]    
Revenues 6,932 7,939
Royalty [Member] | Smart Sensing Products [Member]    
Revenues 2,271 2,719
Royalty [Member] | UNITED STATES    
Revenues 1,204 2,155
Royalty [Member] | Europe and Middle East [Member]    
Revenues 978 911
Royalty [Member] | Asia Pacific [Member]    
Revenues $ 7,021 $ 7,592
[1] China