Segment Information (Details) $ in Thousands	3 Months Ended
Apr. 04, 2020 USD ($) Segment	Mar. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	6
Net revenues	$ 612,841	$ 745,159
Gross profit	147,240	211,159
Unallocated Selling, General, and Administrative Expenses	(99,832)	(103,424)
Operating income	47,408	107,735
Unallocated Other Income (Expense)	(11,274)	(7,787)
Consolidated Income Before Taxes	36,134	99,948
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	305,446	411,560
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	261,129	282,636
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	46,266	50,963
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	215,111	281,590
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	201,943	214,786
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	29,692	53,280
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	45,223	47,508
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	20,553	34,049
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	25,194	30,127
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	43,935	47,561
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	31,190	36,258
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	217,084	259,726
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	233,052	278,899
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	162,705	206,534
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	114,901	178,069
Operating Segments [Member] \| MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	116,893	137,341
Gross profit	28,152	36,059
Operating income	18,658	26,678
Operating Segments [Member] \| Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	115,343	167,840
Gross profit	19,518	43,492
Operating income	14,422	38,128
Operating Segments [Member] \| Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	54,179	60,562
Gross profit	14,585	16,017
Operating income	10,686	11,710
Operating Segments [Member] \| Resistors [Member]
Segment Reporting Information [Line Items]
Net revenues	159,208	188,831
Gross profit	44,773	62,589
Operating income	38,885	56,347
Operating Segments [Member] \| Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	73,785	71,640
Gross profit	22,987	23,280
Operating income	20,310	20,640
Operating Segments [Member] \| Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	93,433	118,945
Gross profit	20,355	29,722
Operating income	15,070	24,566
Operating Segments [Member] \| Corporate Other [Member]
Segment Reporting Information [Line Items]
Net revenues	0	0
Gross profit	(3,130)	0
Operating income	(3,130)	0
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Impact of coronavirus outbreak	(317)	0
Unallocated Selling, General, and Administrative Expenses	(67,176)	(70,334)
Unallocated Other Income (Expense)	$ (11,274)	$ (7,787)

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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