Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues		$ 33,195	$ 30,457	$ 67,586	$ 55,859
Transferred at Point in Time [Member]
Revenues		25,916	26,986	53,846	49,979
Transferred over Time [Member]
Revenues		7,279	3,471	13,740	5,880
Connectivity Products [Member]
Revenues		24,195	21,800	50,072	42,710
Smart Sensing Products [Member]
Revenues		9,000	8,657	17,514	13,149
License [Member]
Revenues		22,123	15,535	44,516	29,932
License [Member] | Transferred at Point in Time [Member]
Revenues		14,844	12,064	30,776	24,052
License [Member] | Transferred over Time [Member]
Revenues		7,279	3,471	13,740	5,880
License [Member] | Connectivity Products [Member]
Revenues		15,995	9,713	32,810	22,518
License [Member] | Smart Sensing Products [Member]
Revenues		6,128	5,822	11,706	7,414
Royalty [Member]
Revenues		11,072	14,922	23,070	25,927
Royalty [Member] | Transferred at Point in Time [Member]
Revenues		11,072	14,922	23,070	25,927
Royalty [Member] | Transferred over Time [Member]
Revenues			0		0
Royalty [Member] | Connectivity Products [Member]
Revenues		8,200	12,087	17,262	20,192
Royalty [Member] | Smart Sensing Products [Member]
Revenues		2,872	2,835	5,808	5,735
UNITED STATES
Revenues		6,991	6,548	13,737	10,498
UNITED STATES | License [Member]
Revenues		5,162	4,722	9,637	5,294
UNITED STATES | Royalty [Member]
Revenues		1,829	1,826	4,100	5,204
Europe and Middle East [Member]
Revenues		2,772	906	3,874	2,005
Europe and Middle East [Member] | License [Member]
Revenues		2,097	410	2,534	833
Europe and Middle East [Member] | Royalty [Member]
Revenues		675	496	1,340	1,172
Asia Pacific [Member]
Revenues	[1]	23,432	23,003	49,975	43,356
Asia Pacific [Member] | License [Member]
Revenues		14,864	10,403	32,345	23,805
Asia Pacific [Member] | Royalty [Member]
Revenues		$ 8,568	$ 12,600	$ 17,630	$ 19,551

[1] China