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Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Revenues $ 109,598 $ 106,939 $ 97,419
Transferred at Point in Time [Member]      
Revenues 95,655 97,595 86,406
Transferred over Time [Member]      
Revenues 13,943 9,344 11,013
Connectivity Products [Member]      
Revenues 81,935 90,033 79,697
Smart Sensing Products [Member]      
Revenues 27,663 16,906 17,722
UNITED STATES      
Revenues 19,288 20,304 9,551
Europe and Middle East [Member]      
Revenues 6,275 12,796 12,184
Asia Pacific [Member]      
Revenues 84,035 73,826 75,684
Other [Member]      
Revenues 0 13 0
License [Member]      
Revenues 63,595 59,999 57,555
License [Member] | Transferred at Point in Time [Member]      
Revenues 49,652 50,655 46,542
License [Member] | Transferred over Time [Member]      
Revenues 13,943 9,344 11,013
License [Member] | Connectivity Products [Member]      
Revenues 46,277 53,607 49,910
License [Member] | Smart Sensing Products [Member]      
Revenues 17,318 6,392 7,645
License [Member] | UNITED STATES      
Revenues 14,117 14,988 3,845
License [Member] | Europe and Middle East [Member]      
Revenues 2,917 8,486 9,197
License [Member] | Asia Pacific [Member]      
Revenues 46,561 36,512 44,513
License [Member] | Other [Member]      
Revenues 0 13  
Royalty [Member]      
Revenues 46,003 46,940 39,864
Royalty [Member] | Transferred at Point in Time [Member]      
Revenues 46,003 46,940 39,864
Royalty [Member] | Connectivity Products [Member]      
Revenues 35,658 36,426 29,787
Royalty [Member] | Smart Sensing Products [Member]      
Revenues 10,345 10,514 10,077
Royalty [Member] | UNITED STATES      
Revenues 5,171 5,316 5,706
Royalty [Member] | Europe and Middle East [Member]      
Revenues 3,358 4,310 2,987
Royalty [Member] | Asia Pacific [Member]      
Revenues 37,474 37,314 $ 31,171
Royalty [Member] | Other [Member]      
Revenues $ 0 $ 0