Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenues		$ 28,735	$ 34,391
Transferred at Point in Time [Member]
Revenues		22,635	27,930
Transferred over Time [Member]
Revenues		6,100	6,461
Connectivity Products [Member]
Revenues		22,197	25,877
Smart Sensing Products [Member]
Revenues		6,538	8,514
License [Member]
Revenues		20,721	22,393
License [Member] | Transferred at Point in Time [Member]
Revenues		14,621	15,932
License [Member] | Transferred over Time [Member]
Revenues		6,100	6,461
License [Member] | Connectivity Products [Member]
Revenues		16,532	16,815
License [Member] | Smart Sensing Products [Member]
Revenues		4,189	5,578
Royalty [Member]
Revenues		8,014	11,998
Royalty [Member] | Transferred at Point in Time [Member]
Revenues		8,014	11,998
Royalty [Member] | Connectivity Products [Member]
Revenues		5,665	9,062
Royalty [Member] | Smart Sensing Products [Member]
Revenues		2,349	2,936
UNITED STATES
Revenues		4,441	6,746
UNITED STATES | License [Member]
Revenues		2,791	4,475
UNITED STATES | Royalty [Member]
Revenues		1,650	2,271
Europe and Middle East [Member]
Revenues		3,193	1,102
Europe and Middle East [Member] | License [Member]
Revenues		2,334	437
Europe and Middle East [Member] | Royalty [Member]
Revenues		859	665
Asia Pacific [Member]
Revenues	[1]	20,626	26,543
Asia Pacific [Member] | License [Member]
Revenues		15,121	17,481
Asia Pacific [Member] | Royalty [Member]
Revenues		5,505	9,062
Other [Member]
Revenues		475	0
Other [Member] | License [Member]
Revenues		475	0
Other [Member] | Royalty [Member]
Revenues		$ 0	$ 0

[1] China