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Business Segments - (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 04, 2021	Jul. 05, 2020
Segment Reporting Information [Line Items]
Net sales	$ 814,893	$ 704,924
Operating earnings by segment	60,900	53,220
Restructuring charges	(7,832)	(1,387)
Energy Systems | Americas
Segment Reporting Information [Line Items]
Net sales	371,206	353,387
Operating earnings by segment	7,106	22,085
Restructuring charges	(488)	(512)
Motive Power | EMEA
Segment Reporting Information [Line Items]
Net sales	336,116	262,834
Operating earnings by segment	50,634	27,276
Restructuring charges	(8,533)	(762)
Specialty | Asia
Segment Reporting Information [Line Items]
Net sales	107,571	88,703
Operating earnings by segment	10,992	5,246
Restructuring charges	$ 1,189	$ (113)

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