Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Apr. 02, 2023	Apr. 03, 2022
Summary of Segment Information
Sales	$ 919,162	$ 935,098	$ 774,541
Gross profit	193,636	165,119	146,520
Selling, general, and administrative expenses	89,600	76,969	75,326
Operating income	104,036	88,150	71,194
Assets	657,934	590,535
Capital expenditures	40,151	48,321	28,512
Industrial [Member]
Summary of Segment Information
Sales	409,465	470,760	386,938
Gross profit	67,545	68,115	59,606
Selling, general, and administrative expenses	28,316	25,703	28,127
Operating income	39,229	42,412	31,479
Identifiable assets*	239,586	253,436	236,934
Segment, Expenditure, Addition to Long-Lived Assets	24,280	31,635	18,812
Water Treatment [Member]
Summary of Segment Information
Sales	363,289	304,925	228,133
Gross profit	98,498	67,208	54,571
Selling, general, and administrative expenses	45,286	35,734	31,357
Operating income	53,212	31,474	23,214
Identifiable assets*	255,188	155,430	143,889
Segment, Expenditure, Addition to Long-Lived Assets	15,739	16,311	8,939
Health and Nutrition [Member]
Summary of Segment Information
Sales	146,408	159,413	159,470
Gross profit	27,593	29,796	32,343
Selling, general, and administrative expenses	15,998	15,532	15,842
Operating income	11,595	14,264	16,501
Identifiable assets*	134,915	155,626	167,034
Segment, Expenditure, Addition to Long-Lived Assets	132	375	761
Identifiable
Summary of Segment Information
Assets	629,689	564,492	547,857
Unallocated
Summary of Segment Information
Assets	$ 28,200	$ 26,000	$ 19,500