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Note 9 - Geographic Information and Major Customer Data - Revenues Based On Customer Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues	$ 32,790	$ 24,960	$ 88,649	$ 72,181
UNITED STATES
Revenues	8,792	3,079	19,290	13,754
Europe and Middle East [Member]
Revenues	1,430	825	3,435	10,017
Asia Pacific [Member]
Revenues	22,558	21,056	65,914	48,410
Other Geographic Regions [Member]
Revenues	10	0	10	0
CHINA
Revenues	$ 18,041	$ 16,085	$ 54,489	$ 37,713

X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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