Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Jan. 28, 2021	Dec. 31, 2022	Mar. 28, 2020	Dec. 31, 2022	Jan. 01, 2022	Dec. 26, 2020
Segment Reporting Information
Net sales				$ 2,513,897	$ 2,079,928	$ 1,445,695
Depreciation and amortization				120,706	98,635	96,178
Operating income (loss)				500,826	385,642	162,372
Interest expense				26,216	18,527	21,077
Foreign exchange loss (gain)				24,359	17,158	(14,875)
Other expense (income), net				7,207	8,932	(5,083)
Income before income taxes				443,044	341,025	161,253
Impairment of intangible assets				2,856
Restructuring, impairment and other costs				9,977		41,716
Restructuring charges				7,121	2,158	5,638
Electronics – Semiconductor
Segment Reporting Information
Net sales				802,281	678,861
Employee terminations
Segment Reporting Information
Restructuring charges				5,769	1,875	5,453
Other restructuring charges
Segment Reporting Information
Restructuring charges				1,352	283	185
Hartland Controls
Segment Reporting Information
Inventory adjustment	$ 6,800
IXYS Corporation | Employee terminations
Segment Reporting Information
Restructuring charges					2,200	41,700
IXYS Corporation | Other restructuring charges
Segment Reporting Information
Restructuring charges			$ 200
IXYS Corporation | Operating Income (Loss)
Segment Reporting Information
Legal, accounting and other expenses					7,000
Other
Segment Reporting Information
Operating income (loss)				(43,182)	(12,591)	(43,974)
Other | Hartland Controls | Operating Income (Loss)
Segment Reporting Information
Inventory adjustment				15,600	8,400
Other | IXYS Corporation | Operating Income (Loss)
Segment Reporting Information
Legal, accounting and other expenses						2,300
Electronics
Segment Reporting Information
Net sales				1,492,819	1,300,744	937,762
Impairment of intangible assets				2,856
Restructuring, impairment and other costs				5,924		2,540
Restructuring charges				3,068	1,124	2,540
Electronics | Electronics – Semiconductor
Segment Reporting Information
Net sales				802,281	678,861
Impairment of intangible assets		$ 2,900
Electronics | Employee terminations
Segment Reporting Information
Restructuring charges				2,792	1,124	2,540
Electronics | Other restructuring charges
Segment Reporting Information
Restructuring charges				276	0	0
Electronics | Hartland Controls
Segment Reporting Information
Gain (loss) on sale of properties					(5,000)
Electronics | Operating Segments
Segment Reporting Information
Depreciation and amortization				68,195	61,512	62,702
Operating income (loss)				431,616	309,633	152,695
Transportation
Segment Reporting Information
Net sales				716,140	528,058	395,764
Impairment of intangible assets				0
Restructuring, impairment and other costs				3,770		34,698
Restructuring charges				3,770	687	857
Transportation | Electronics – Semiconductor
Segment Reporting Information
Net sales				0	0
Transportation | Employee terminations
Segment Reporting Information
Restructuring charges				2,694	404	682
Transportation | Other restructuring charges
Segment Reporting Information
Restructuring charges				1,076	283	175
Transportation | IXYS Corporation | Employee terminations
Segment Reporting Information
Restructuring charges						5,500
Transportation | Operating Segments
Segment Reporting Information
Depreciation and amortization				43,756	29,015	28,995
Operating income (loss)				63,539	65,979	41,655
Industrial
Segment Reporting Information
Net sales				304,938	251,126	112,169
Impairment of intangible assets				0
Restructuring, impairment and other costs				283		4,478
Restructuring charges				283	347	2,241
Industrial | Electronics – Semiconductor
Segment Reporting Information
Net sales				0	0
Industrial | Employee terminations
Segment Reporting Information
Restructuring charges				283	347	2,231
Industrial | Other restructuring charges
Segment Reporting Information
Restructuring charges				0	0	10
Industrial | Operating Segments
Segment Reporting Information
Depreciation and amortization				8,755	8,108	4,481
Operating income (loss)				48,853	$ 22,621	$ 11,996
Other | Hartland Controls | Operating Income (Loss)
Segment Reporting Information
Integration cost				17,600
Restructuring, impairment and other costs				$ 10,000
Transportation | IXYS Corporation
Segment Reporting Information
Other asset impairment charges			$ 2,200