Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2021	Oct. 03, 2020	Oct. 02, 2021	Oct. 03, 2020
Segment Reporting Information [Line Items]
Net revenues	$ 813,663	$ 640,160	$ 2,397,415	$ 1,834,718
Gross profit	225,736	151,709	657,957	429,619
Restructuring and severance Costs			0	(743)
Unallocated Selling, General, and Administrative Expenses	(102,215)	(90,219)	(311,800)	(279,178)
Operating income	123,521	61,490	346,157	149,698
Unallocated Other Income (Expense)	(7,106)	(15,766)	(25,405)	(38,100)
Consolidated Income Before Taxes	116,415	45,724	320,752	111,598
Distributors [Member]
Segment Reporting Information [Line Items]
Net revenues	483,766	325,695	1,400,700	980,703
OEMs [Member]
Segment Reporting Information [Line Items]
Net revenues	278,358	273,664	850,413	725,592
EMS Companies [Member]
Segment Reporting Information [Line Items]
Net revenues	51,539	40,801	146,302	128,423
Industrial [Member]
Segment Reporting Information [Line Items]
Net revenues	335,047	209,473	927,981	651,461
Automotive [Member]
Segment Reporting Information [Line Items]
Net revenues	240,764	216,641	743,766	552,418
Telecommunications [Member]
Segment Reporting Information [Line Items]
Net revenues	24,580	27,845	72,438	91,033
Computing [Member]
Segment Reporting Information [Line Items]
Net revenues	58,703	51,032	183,234	151,974
Consumer Products [Member]
Segment Reporting Information [Line Items]
Net revenues	43,839	33,353	128,243	76,477
Power Supplies [Member]
Segment Reporting Information [Line Items]
Net revenues	42,082	29,112	119,373	86,482
Military and Aerospace [Member]
Segment Reporting Information [Line Items]
Net revenues	40,198	40,582	124,909	125,968
Medical [Member]
Segment Reporting Information [Line Items]
Net revenues	28,450	32,122	97,471	98,905
Asia [Member]
Segment Reporting Information [Line Items]
Net revenues	365,133	270,451	1,034,936	748,160
Europe [Member]
Segment Reporting Information [Line Items]
Net revenues	263,650	213,296	800,801	626,276
Americas [Member]
Segment Reporting Information [Line Items]
Net revenues	184,880	156,413	561,678	460,282
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income	192,616	120,854	556,460	336,312
Operating Segments [Member] | MOSFETS [Member]
Segment Reporting Information [Line Items]
Net revenues	175,499	133,976	496,659	369,813
Gross profit	53,868	29,649	138,410	84,779
Operating income	43,717	20,148	108,434	56,408
Operating Segments [Member] | Diodes [Member]
Segment Reporting Information [Line Items]
Net revenues	185,306	123,744	517,299	363,274
Gross profit	46,756	20,843	122,929	65,265
Operating income	41,363	15,828	106,304	50,064
Operating Segments [Member] | Optoelectronic Components [Member]
Segment Reporting Information [Line Items]
Net revenues	70,750	64,955	224,316	168,264
Gross profit	23,810	21,289	73,958	47,602
Operating income	19,708	17,184	61,070	35,818
Operating Segments [Member] | Resistors [Member]
Segment Reporting Information [Line Items]
Net revenues	181,189	145,362	562,513	444,982
Gross profit	49,729	35,186	161,631	112,472
Operating income	43,547	30,127	142,288	96,891
Operating Segments [Member] | Inductors [Member]
Segment Reporting Information [Line Items]
Net revenues	84,816	79,399	253,813	218,369
Gross profit	26,857	26,597	83,288	69,836
Operating income	24,368	24,106	75,902	62,129
Operating Segments [Member] | Capacitors [Member]
Segment Reporting Information [Line Items]
Net revenues	116,103	92,724	342,815	270,016
Gross profit	24,716	18,387	77,741	53,960
Operating income	19,913	13,703	62,462	39,297
Operating Segments [Member] | Corporate Other [Member]
Segment Reporting Information [Line Items]
Net revenues	0	0	0	0
Gross profit	0	(242)	0	(4,295)
Operating income	0	(242)	0	(4,295)
Unallocated Amount to Segment [Member]
Segment Reporting Information [Line Items]
Restructuring and severance Costs	0	0	0	(743)
Impact of COVID-19 Pandemic on Selling, General, and Administrative Expenses	0	441	0	871
Unallocated Selling, General, and Administrative Expenses	(69,095)	(59,805)	(210,303)	(186,742)
Unallocated Other Income (Expense)	$ (7,106)	$ (15,766)	$ (25,405)	$ (38,100)