Segment Information - Summary of Total Net Sales to External Customers (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 31, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information
Net sales	$ 426,998	$ 394,147	$ 378,874	$ 391,047	$ 401,642	$ 398,597	$ 383,059	$ 367,199	$ 1,591,066	$ 1,550,497	$ 1,342,532
TAIWAN, PROVINCE OF CHINA
Segment Reporting Information
Net sales									309,829	289,863	289,714
UNITED STATES
Segment Reporting Information
Net sales									380,864	347,032	286,339
SOUTH KOREA
Segment Reporting Information
Net sales									244,367	242,396	216,868
JAPAN
Segment Reporting Information
Net sales									205,490	210,755	169,480
CHINA
Segment Reporting Information
Net sales									214,740	204,385	148,890
EUROPE
Segment Reporting Information
Net sales									132,223	138,075	120,481
SOUTHEAST ASIA
Segment Reporting Information
Net sales									103,553	117,991	110,760
SCEM
Segment Reporting Information
Net sales									526,519	530,241	485,470
SCEM | TAIWAN, PROVINCE OF CHINA
Segment Reporting Information
Net sales									94,561	104,707	113,279
SCEM | UNITED STATES
Segment Reporting Information
Net sales									149,570	133,834	117,602
SCEM | SOUTH KOREA
Segment Reporting Information
Net sales									76,447	82,890	74,773
SCEM | JAPAN
Segment Reporting Information
Net sales									57,456	52,731	41,164
SCEM | CHINA
Segment Reporting Information
Net sales									67,877	68,365	64,796
SCEM | EUROPE
Segment Reporting Information
Net sales									33,147	32,088	30,472
SCEM | SOUTHEAST ASIA
Segment Reporting Information
Net sales									47,461	55,626	43,384
MC
Segment Reporting Information
Net sales									633,664	553,838	436,812
MC | TAIWAN, PROVINCE OF CHINA
Segment Reporting Information
Net sales									144,404	118,208	109,815
MC | UNITED STATES
Segment Reporting Information
Net sales									113,551	95,421	71,421
MC | SOUTH KOREA
Segment Reporting Information
Net sales									98,568	74,623	65,677
MC | JAPAN
Segment Reporting Information
Net sales									104,202	110,997	89,638
MC | CHINA
Segment Reporting Information
Net sales									98,693	84,652	45,382
MC | EUROPE
Segment Reporting Information
Net sales									45,454	40,635	30,479
MC | SOUTHEAST ASIA
Segment Reporting Information
Net sales									28,792	29,302	24,400
AMH
Segment Reporting Information
Net sales									458,290	493,404	444,743
AMH | TAIWAN, PROVINCE OF CHINA
Segment Reporting Information
Net sales									70,864	66,948	66,620
AMH | UNITED STATES
Segment Reporting Information
Net sales									145,150	144,763	121,809
AMH | SOUTH KOREA
Segment Reporting Information
Net sales									69,352	84,883	76,418
AMH | JAPAN
Segment Reporting Information
Net sales									43,832	47,027	38,678
AMH | CHINA
Segment Reporting Information
Net sales									48,170	51,368	38,712
AMH | EUROPE
Segment Reporting Information
Net sales									53,622	65,352	59,530
AMH | SOUTHEAST ASIA
Segment Reporting Information
Net sales									27,300	33,063	42,976
Inter-segment elimination
Segment Reporting Information
Net sales									(27,407)	(26,986)	(24,493)
Inter-segment elimination | TAIWAN, PROVINCE OF CHINA
Segment Reporting Information
Net sales									0	0	0
Inter-segment elimination | UNITED STATES
Segment Reporting Information
Net sales									(27,407)	(26,986)	(24,493)
Inter-segment elimination | SOUTH KOREA
Segment Reporting Information
Net sales									0	0	0
Inter-segment elimination | JAPAN
Segment Reporting Information
Net sales									0	0	0
Inter-segment elimination | CHINA
Segment Reporting Information
Net sales									0	0	0
Inter-segment elimination | EUROPE
Segment Reporting Information
Net sales									0	0	0
Inter-segment elimination | SOUTHEAST ASIA
Segment Reporting Information
Net sales									$ 0	$ 0	$ 0