Geographic and Segment Information - Schedule of Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total net sales	$ 199,685	$ 166,685	$ 365,504	$ 328,395
Total gross profit	53,854	46,662	98,435	88,232
Operating Segments [Member] | Foundry Services Group [Member]
Segment Reporting Information [Line Items]
Total net sales	80,907	87,549	158,336	171,091
Total gross profit	22,185	24,670	42,849	47,982
Operating Segments [Member] | Standard Products Group [Member]
Segment Reporting Information [Line Items]
Total net sales	118,740	79,046	207,103	157,191
Total gross profit	31,631	21,902	55,670	40,137
Operating Segments [Member] | Standard Products Group [Member] | Display Solutions [Member]
Segment Reporting Information [Line Items]
Total net sales	78,712	43,732	128,408	86,597
Operating Segments [Member] | Standard Products Group [Member] | Power Solutions [Member]
Segment Reporting Information [Line Items]
Total net sales	40,028	35,314	78,695	70,594
All Other [Member]
Segment Reporting Information [Line Items]
Total net sales	38	90	65	113
Total gross profit	$ 38	$ 90	$ (84)	$ 113