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Segment, Product and Geographic Information - Revenues from significant customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment, Product and Geographic Information
Revenues	$ 906,802	$ 945,428	$ 1,201,339
Driver IC Segment
Segment, Product and Geographic Information
Revenues	281,421	337,300	460,025
Driver IC Segment | Customer A and Its affiliates
Segment, Product and Geographic Information
Revenues	207,725	234,581	347,794
Driver IC Segment | Customer C
Segment, Product and Geographic Information
Revenues	73,696	102,719	112,231
Non-driver Products Segment
Segment, Product and Geographic Information
Revenues	33,144	37,890	41,565
Non-driver Products Segment | Customer A and Its affiliates
Segment, Product and Geographic Information
Revenues	31,276	36,770	40,400
Non-driver Products Segment | Customer C
Segment, Product and Geographic Information
Revenues	$ 1,868	$ 1,120	$ 1,165

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The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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