Operating Segments Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Revenue by Principal Product
Net Sales	$ 111,438	$ 98,539
Business to Business Products
Revenue by Principal Product
Net Sales	39,161	33,687
Business to Business Products | Cat Litter
Revenue by Principal Product
Net Sales	0	0
Business to Business Products | Industrial and Sports
Revenue by Principal Product
Net Sales	0	0
Business to Business Products | Agricultural and Horticultural
Revenue by Principal Product
Net Sales	10,315	10,003
Business to Business Products | Bleaching Clay and Fluids Purification
Revenue by Principal Product
Net Sales	22,406	18,229
Business to Business Products | Animal Health and Nutrition
Revenue by Principal Product
Net Sales	6,440	5,455
Retail and Wholesale Products
Revenue by Principal Product
Net Sales	72,277	64,852
Retail and Wholesale Products | Cat Litter
Revenue by Principal Product
Net Sales	60,861	54,198
Retail and Wholesale Products | Industrial and Sports
Revenue by Principal Product
Net Sales	11,416	10,654
Retail and Wholesale Products | Agricultural and Horticultural
Revenue by Principal Product
Net Sales	0	0
Retail and Wholesale Products | Bleaching Clay and Fluids Purification
Revenue by Principal Product
Net Sales	0	0
Retail and Wholesale Products | Animal Health and Nutrition
Revenue by Principal Product
Net Sales	$ 0	$ 0