Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues		$ 33,660	$ 32,790	$ 101,246	$ 88,649
Transferred at Point in Time [Member]
Revenues		26,662	25,628	80,508	75,607
Transferred over Time [Member]
Revenues		6,998	7,162	20,738	13,042
Connectivity Products [Member]
Revenues		21,628	23,868	71,700	66,578
Smart Sensing Products [Member]
Revenues		12,032	8,922	29,546	22,071
License [Member]
Revenues		22,268	21,568	66,784	51,500
License [Member] | Transferred at Point in Time [Member]
Revenues		15,270	14,406	46,046	38,458
License [Member] | Transferred over Time [Member]
Revenues		6,998	7,162	20,738	13,042
License [Member] | Connectivity Products [Member]
Revenues		13,308	16,368	46,118	38,886
License [Member] | Smart Sensing Products [Member]
Revenues		8,960	5,200	20,666	12,614
Royalty [Member]
Revenues		11,392	11,222	34,462	37,149
Royalty [Member] | Transferred at Point in Time [Member]
Revenues		11,392	11,222	34,462	37,149
Royalty [Member] | Transferred over Time [Member]
Revenues			0		0
Royalty [Member] | Connectivity Products [Member]
Revenues		8,320	7,500	25,582	27,692
Royalty [Member] | Smart Sensing Products [Member]
Revenues		3,072	3,722	8,880	9,457
UNITED STATES
Revenues		9,207	8,792	22,944	19,290
UNITED STATES | License [Member]
Revenues		7,646	6,308	17,283	11,602
UNITED STATES | Royalty [Member]
Revenues		1,561	2,484	5,661	7,688
Europe and Middle East [Member]
Revenues		2,633	1,430	6,507	3,435
Europe and Middle East [Member] | License [Member]
Revenues		1,746	597	4,280	1,430
Europe and Middle East [Member] | Royalty [Member]
Revenues		887	833	2,227	2,005
Asia Pacific [Member]
Revenues	[1]	21,820	22,558	71,795	65,914
Asia Pacific [Member] | License [Member]
Revenues		12,876	14,653	45,221	38,458
Asia Pacific [Member] | Royalty [Member]
Revenues		8,944	7,905	26,574	27,456
Other [Member]
Revenues		$ 0	10	$ 0	10
Other [Member] | License [Member]
Revenues			10		10
Other [Member] | Royalty [Member]
Revenues			$ 0		$ 0

[1] China