Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Apr. 04, 2020
Segment Reporting Information [Line Items]
Net revenues	$ 764,632	$ 612,841
Gross profit	202,949	147,240
Unallocated Selling, General, and Administrative Expenses	(105,685)	(99,832)
Operating income	97,264	47,408
Unallocated Other Income (Expense)	(10,107)	(11,274)
Consolidated Income Before Taxes	87,157	36,134
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	424,125	305,446
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	294,637	261,129
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	45,870	46,266
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	270,801	215,111
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	255,973	201,943
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	24,902	29,692
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	59,899	45,223
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	40,795	20,553
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	35,246	25,194
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	41,538	43,935
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	35,478	31,190
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	322,460	217,084
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	268,323	233,052
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	173,849	162,705
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	168,767	114,901
Operating Segments [Member] | MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	153,223	116,893
Gross profit	37,108	28,152
Operating income	27,207	18,658
Operating Segments [Member] | Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	157,178	115,343
Gross profit	34,416	19,518
Operating income	28,821	14,422
Operating Segments [Member] | Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	77,771	54,179
Gross profit	25,626	14,585
Operating income	21,210	10,686
Operating Segments [Member] | Resistors [Member]
Segment Reporting Information [Line Items]
Net revenues	186,602	159,208
Gross profit	53,973	44,773
Operating income	47,376	38,885
Operating Segments [Member] | Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	83,458	73,785
Gross profit	27,751	22,987
Operating income	25,290	20,310
Operating Segments [Member] | Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	106,400	93,433
Gross profit	24,075	20,355
Operating income	18,863	15,070
Operating Segments [Member] | Corporate Other [Member]
Segment Reporting Information [Line Items]
Net revenues	0	0
Gross profit	0	(3,130)
Operating income	0	(3,130)
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Impact of COVID-19 Pandemic on Selling, General, and Administrative Expenses	0	(317)
Unallocated Selling, General, and Administrative Expenses	(71,503)	(67,176)
Unallocated Other Income (Expense)	$ (10,107)	$ (11,274)