Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 02, 2022	Sep. 26, 2021	Oct. 02, 2022	Sep. 26, 2021
Segment Reporting Information [Line Items]
Sales	$ 241,192	$ 183,277	$ 487,735	$ 364,518
Gross profit	46,374	37,287	93,123	76,261
Selling, general, and administrative expenses	19,838	17,679	38,723	34,535
Operating income	26,536	19,608	54,400	41,726
Industrial [Member]
Segment Reporting Information [Line Items]
Sales	113,939	83,168	238,649	169,018
Gross profit	17,713	12,564	37,722	26,818
Selling, general, and administrative expenses	6,891	6,456	13,276	12,697
Operating income	10,822	6,108	24,446	14,121
Water Treatment [Member]
Segment Reporting Information [Line Items]
Sales	86,488	62,111	164,978	118,349
Gross profit	20,504	17,518	39,457	33,752
Selling, general, and administrative expenses	9,082	7,405	17,783	14,467
Operating income	11,422	10,113	21,674	19,285
Health and Nutrition [Member]
Segment Reporting Information [Line Items]
Sales	40,765	37,998	84,108	77,151
Gross profit	8,157	7,205	15,944	15,691
Selling, general, and administrative expenses	3,865	3,818	7,664	7,371
Operating income	$ 4,292	$ 3,387	$ 8,280	$ 8,320