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Note 5 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues	$ 28,384	$ 27,207	$ 78,307	$ 77,716
Transferred at Point in Time [Member]
Revenues	25,510	25,064	67,516	71,604
Transferred over Time [Member]
Revenues	2,874	2,143	10,791	6,112
Connectivity Products [Member]
Revenues	18,895	21,761	55,617	64,816
Smart Sensing Products [Member]
Revenues	9,489	5,446	22,690	12,900
UNITED STATES
Revenues	6,780	8,119	15,943	12,022
Europe and Middle East [Member]
Revenues	1,524	2,690	5,018	11,644
Asia Pacific [Member]
Revenues	20,080	16,398	57,346	54,037
Other [Member]
Revenues	0	0	0	13
License [Member]
Revenues	16,028	15,574	46,092	44,266
License [Member] \| Transferred at Point in Time [Member]
Revenues	13,154	13,431	35,301	38,154
License [Member] \| Transferred over Time [Member]
Revenues	2,874	2,143	10,791	6,112
License [Member] \| Connectivity Products [Member]
Revenues	9,477	12,960	30,989	39,283
License [Member] \| Smart Sensing Products [Member]
Revenues	6,551	2,614	15,103	4,983
License [Member] \| UNITED STATES
Revenues	5,301	7,174	11,991	7,985
License [Member] \| Europe and Middle East [Member]
Revenues	837	1,473	2,553	8,318
License [Member] \| Asia Pacific [Member]
Revenues	9,890	6,927	31,548	27,950
License [Member] \| Other [Member]
Revenues		0		13
Royalty [Member]
Revenues	12,356	11,633	32,215	33,450
Royalty [Member] \| Transferred at Point in Time [Member]
Revenues	12,356	11,633	32,215	33,450
Royalty [Member] \| Connectivity Products [Member]
Revenues	9,418	8,801	24,628	25,533
Royalty [Member] \| Smart Sensing Products [Member]
Revenues	2,938	2,832	7,587	7,917
Royalty [Member] \| UNITED STATES
Revenues	1,479	945	3,952	4,037
Royalty [Member] \| Europe and Middle East [Member]
Revenues	687	1,217	2,465	3,326
Royalty [Member] \| Asia Pacific [Member]
Revenues	$ 10,190	$ 9,471	$ 25,798	$ 26,087