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Segment Information
9 Months Ended
Dec. 29, 2019
Segment Reporting [Abstract]  
Segment Information Segment Information
We have three reportable segments: Industrial, Water Treatment, and Health and Nutrition. The accounting policies of the segments are the same as those described in the summary of significant accounting policies in our fiscal 2019 Annual Report on Form 10-K.

We evaluate performance based on profit or loss from operations before income taxes not including nonrecurring gains and losses. Reportable segments are defined primarily by product and type of customer. Segments are responsible for the sales, marketing and development of their products and services. Other than our Health and Nutrition segment, the segments do not have separate accounting, administration, customer service or purchasing functions. We allocate certain corporate expenses to our operating segments. There are no intersegment sales and no operating segments have been aggregated. No single customer’s revenues amounted to 10% or more of our total revenue. Sales are primarily within the United States and all assets are located within the United States.
 
(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  

No significant changes to identifiable assets by segment occurred during the nine months ended December 29, 2019.