Note 8 - Geographic Information and Major Customer Data - Revenues Based On Customer Location (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
UNITED STATES
Revenues		9,207	8,792	22,944	19,290
Europe and Middle East [Member]
Revenues		2,633	1,430	6,507	3,435
Asia Pacific [Member]
Revenues	[1]	21,820	22,558	71,795	65,914
Other [Member]
Revenues		0	10	0	10
CHINA
Revenues		$ 16,159	$ 18,041	$ 57,731	$ 54,489

[1] China