Segment Information and Foreign Operations - Product Information (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue by product type
Revenue	$ 141,118	$ 137,393	$ 95,361
Substrates
Revenue by product type
Revenue	111,094	103,026	75,587
Raw Materials And Others
Revenue by product type
Revenue	$ 30,024	$ 34,367	$ 19,774

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