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Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenues $ 34,391 $ 25,402
Transferred at Point in Time [Member]    
Revenues 27,930 22,993
Transferred over Time [Member]    
Revenues 6,461 2,409
Connectivity Products [Member]    
Revenues 25,877 20,910
Smart Sensing Products [Member]    
Revenues 8,514 4,492
License [Member]    
Revenues 22,393 14,397
License [Member] | Transferred at Point in Time [Member]    
Revenues 15,932 11,988
License [Member] | Transferred over Time [Member]    
Revenues 6,461 2,409
License [Member] | Connectivity Products [Member]    
Revenues 16,815 12,805
License [Member] | Smart Sensing Products [Member]    
Revenues 5,578 1,592
Royalty [Member]    
Revenues 11,998 11,005
Royalty [Member] | Transferred at Point in Time [Member]    
Revenues 11,998 11,005
Royalty [Member] | Connectivity Products [Member]    
Revenues 9,062 8,105
Royalty [Member] | Smart Sensing Products [Member]    
Revenues 2,936 2,900
UNITED STATES    
Revenues 6,746 3,950
UNITED STATES | License [Member]    
Revenues 4,475 572
UNITED STATES | Royalty [Member]    
Revenues 2,271 3,378
Europe and Middle East [Member]    
Revenues 1,102 1,099
Europe and Middle East [Member] | License [Member]    
Revenues 437 423
Europe and Middle East [Member] | Royalty [Member]    
Revenues 665 676
Asia Pacific [Member]    
Revenues [1] 26,543 20,353
Asia Pacific [Member] | License [Member]    
Revenues 17,481 13,402
Asia Pacific [Member] | Royalty [Member]    
Revenues $ 9,062 $ 6,951
[1] China