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Segment, Product and Geographic Information - Segment revenues from major product lines (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment, Product and Geographic Information      
Revenue $ 1,201,339 $ 1,547,097 $ 887,282
Display drivers for large-sized applications      
Segment, Product and Geographic Information      
Revenue 263,992 397,905 240,789
Display drivers for small and medium-sized applications      
Segment, Product and Geographic Information      
Revenue 778,946 963,537 515,733
Non-driver products      
Segment, Product and Geographic Information      
Revenue 158,401 185,655 130,760
Driver IC      
Segment, Product and Geographic Information      
Revenue 1,042,938 1,361,442 756,522
Driver IC | Display drivers for large-sized applications      
Segment, Product and Geographic Information      
Revenue 263,992 397,905 240,789
Driver IC | Display drivers for small and medium-sized applications      
Segment, Product and Geographic Information      
Revenue 778,946 963,537 515,733
Driver IC | Non-driver products      
Segment, Product and Geographic Information      
Revenue 0 0 0
Non-driver products      
Segment, Product and Geographic Information      
Revenue 158,401 185,655 130,760
Non-driver products | Display drivers for large-sized applications      
Segment, Product and Geographic Information      
Revenue 0 0 0
Non-driver products | Display drivers for small and medium-sized applications      
Segment, Product and Geographic Information      
Revenue 0 0 0
Non-driver products | Non-driver products      
Segment, Product and Geographic Information      
Revenue $ 158,401 $ 185,655 $ 130,760