Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues		$ 97,419	$ 120,583	$ 113,832
Transferred at Point in Time [Member]
Revenues		86,406	107,442	103,280
Transferred over Time [Member]
Revenues		11,013	13,141	10,552
Connectivity Products [Member]
Revenues		79,697	94,202	87,318
Smart Sensing Products [Member]
Revenues		17,722	26,381	26,514
License [Member]
Revenues		57,555	75,194	63,953
License [Member] | Transferred at Point in Time [Member]
Revenues		46,542	62,053	53,401
License [Member] | Transferred over Time [Member]
Revenues		11,013	13,141	10,552
License [Member] | Connectivity Products [Member]
Revenues		49,910	60,312	50,359
License [Member] | Smart Sensing Products [Member]
Revenues		7,645	14,882	13,594
Royalty [Member]
Revenues		39,864	45,389	49,879
Royalty [Member] | Transferred at Point in Time [Member]
Revenues		39,864	45,389	49,879
Royalty [Member] | Transferred over Time [Member]
Revenues		0	0	0
Royalty [Member] | Connectivity Products [Member]
Revenues		29,787	33,890	36,959
Royalty [Member] | Smart Sensing Products [Member]
Revenues		10,077	11,499	12,920
UNITED STATES
Revenues		9,551	14,155	17,844
UNITED STATES | License [Member]
Revenues		3,845	7,055	7,811
UNITED STATES | Royalty [Member]
Revenues		5,706	7,100	10,033
Europe and Middle East [Member]
Revenues		12,184	9,944	6,876
Europe and Middle East [Member] | License [Member]
Revenues		9,197	6,739	2,938
Europe and Middle East [Member] | Royalty [Member]
Revenues		2,987	3,205	3,938
Asia Pacific [Member]
Revenues	[1]	75,684	96,484	89,112
Asia Pacific [Member] | License [Member]
Revenues		44,513	61,400	53,204
Asia Pacific [Member] | Royalty [Member]
Revenues		$ 31,171	$ 35,084	$ 35,908

[1] China