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Segment Information (Tables)
9 Months Ended
Dec. 29, 2019
Segment Reporting [Abstract]  
Summary of Segment Information
(In thousands)IndustrialWater
Treatment
Health and NutritionTotal
Three months ended December 29, 2019:
Sales$63,018  $34,890  $22,498  $120,406  
Gross profit8,418  8,362  4,698  21,478  
Selling, general, and administrative expenses6,050  4,834  3,818  14,702  
Operating income2,368  3,528  880  6,776  
Three months ended December 30, 2018:
Sales$69,026  $32,740  $26,385  $128,151  
Gross profit8,288  7,643  5,102  21,033  
Selling, general, and administrative expenses5,589  4,582  4,141  14,312  
Operating income 2,699  3,061  961  6,721  
Nine months ended December 29, 2019:
Sales$206,433  $124,010  $77,342  $407,785  
Gross profit30,007  33,206  15,056  78,269  
Selling, general and administrative expenses18,041  14,956  11,358  44,355  
Operating income11,966  18,250  3,698  33,914  
Nine months ended December 30, 2018:
Sales$212,446  $116,322  $94,507  $423,275  
Gross profit27,059  30,790  17,413  75,262  
Selling, general and administrative expenses16,866  14,738  12,628  44,232  
Operating income 10,193  16,052  4,785  31,030