Note 17- Geographic Information - Revenue Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue, net	$ 54,189	$ 65,222	$ 103,890	$ 105,689
UNITED STATES
Revenue, net	3,422	4,735	6,737	8,496
TAIWAN, PROVINCE OF CHINA
Revenue, net	29,493	40,604	55,888	64,486
CHINA
Revenue, net	$ 21,274	$ 19,883	$ 41,265	$ 32,707

Amount, excluding 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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+ Details