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Segment, Product and Geographic Information - Revenues from significant customers (Details) - USD ($) $ in Thousands | 12 Months Ended
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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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