Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 30, 2019 USD ($) Segment	Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	5
Net revenues	$ 745,159	$ 716,795
Gross profit	211,159	205,300
Unallocated Selling, General, and Administrative Expenses	(103,424)	(101,238)
Operating income	107,735	104,062
Unallocated Other Income (Expense)	(7,787)	(12,043)
Consolidated Income Before Taxes	99,948	92,019
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	411,560	404,060
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	282,636	264,050
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	50,963	48,685
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	281,590	280,212
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	214,786	208,394
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	53,280	45,924
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	47,508	47,431
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	34,049	37,259
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	30,127	34,243
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	47,561	35,214
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	36,258	28,118
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	259,726	285,478
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	278,899	267,382
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	206,534	163,935
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	178,069	172,178
Operating Segments [Member] | MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	137,341	127,506
Gross profit	36,059	32,022
Operating income	26,678	22,558
Operating Segments [Member] | Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	167,840	167,017
Gross profit	43,492	43,200
Operating income	38,128	37,931
Operating Segments [Member] | Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	60,562	71,958
Gross profit	16,017	27,233
Operating income	11,710	22,794
Operating Segments [Member] | Resistors & Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	260,471	244,046
Gross profit	85,869	78,530
Operating income	76,987	70,002
Operating Segments [Member] | Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	118,945	106,268
Gross profit	29,722	24,315
Operating income	24,566	18,893
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Unallocated Selling, General, and Administrative Expenses	(70,334)	(68,116)
Unallocated Other Income (Expense)	$ (7,787)	$ (12,043)