Geographic and Other Information - Schedule of Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenues	$ 124,813	$ 149,167	$ 364,114	$ 397,319
Total gross profit	28,588	35,255	89,856	85,900
Standard Products Group [Member]
Segment Reporting Information [Line Items]
Total revenues	116,262	139,273	335,953	371,543
Total gross profit	28,768	35,255	90,036	85,900
Fab Three Foundry Services [Member]
Segment Reporting Information [Line Items]
Total revenues	8,551	9,894	28,161	25,776
Total gross profit
Operating Segments [Member] | Standard Products Group [Member]
Segment Reporting Information [Line Items]
Total revenues	116,262	139,273	335,953	371,543
Operating Segments [Member] | Standard Products Group [Member] | Display Solutions [Member]
Segment Reporting Information [Line Items]
Total revenues	69,583	90,550	216,352	233,041
Operating Segments [Member] | Standard Products Group [Member] | Power Solutions [Member]
Segment Reporting Information [Line Items]
Total revenues	$ 46,679	$ 48,723	$ 119,601	$ 138,502