Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues		$ 134,648	$ 122,706	$ 100,326
Transferred at Point in Time [Member]
Revenues		107,717	103,280	87,888
Transferred over Time [Member]
Revenues		26,931	19,426	12,438
Connectivity Products [Member]
Revenues		96,267	89,420	78,665
Smart Sensing Products [Member]
Revenues		38,381	33,286	21,661
License [Member]
Revenues		89,259	72,827	52,513
License [Member] | Transferred at Point in Time [Member]
Revenues		62,328	53,401	40,075
License [Member] | Transferred over Time [Member]
Revenues		26,931	19,426	12,438
License [Member] | Connectivity Products [Member]
Revenues		62,376	52,460	40,748
License [Member] | Smart Sensing Products [Member]
Revenues		26,883	20,367	11,765
Royalty [Member]
Revenues		45,389	49,879	47,813
Royalty [Member] | Transferred at Point in Time [Member]
Revenues		45,389	49,879	47,813
Royalty [Member] | Transferred over Time [Member]
Revenues				0
Royalty [Member] | Connectivity Products [Member]
Revenues		33,891	36,960	37,917
Royalty [Member] | Smart Sensing Products [Member]
Revenues		11,498	12,919	9,896
UNITED STATES
Revenues		28,095	26,718	20,813
UNITED STATES | License [Member]
Revenues		20,995	16,685	6,716
UNITED STATES | Royalty [Member]
Revenues		7,100	10,033	14,097
Europe and Middle East [Member]
Revenues		10,069	6,876	11,966
Europe and Middle East [Member] | License [Member]
Revenues		6,864	2,938	6,176
Europe and Middle East [Member] | Royalty [Member]
Revenues		3,205	3,938	5,790
Asia Pacific [Member]
Revenues	[1]	96,484	89,102	67,547
Asia Pacific [Member] | License [Member]
Revenues		61,400	53,194	39,621
Asia Pacific [Member] | Royalty [Member]
Revenues		35,084	35,908	27,926
Other [Member]
Revenues		0	10	$ 0
Other [Member] | License [Member]
Revenues		0	10
Other [Member] | Royalty [Member]
Revenues		$ 0	$ 0

[1] China