Operating Segments Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Revenue by Principal Product
Net Sales	$ 126,329	$ 115,501	$ 364,552	$ 360,360
Business to Business Products
Revenue by Principal Product
Net Sales	43,841	42,678	130,104	134,509
Business to Business Products | Cat Litter
Revenue by Principal Product
Net Sales	0	0	0	0
Business to Business Products | Industrial and Sports
Revenue by Principal Product
Net Sales	0	0	0	0
Business to Business Products | Agricultural and Horticultural
Revenue by Principal Product
Net Sales	12,442	11,639	36,615	32,396
Business to Business Products | Fluids Purification
Revenue by Principal Product
Net Sales	25,040	25,269	77,180	82,384
Business to Business Products | Animal Health & Nutrition
Revenue by Principal Product
Net Sales	6,359	5,770	16,309	19,729
Retail and Wholesale Products
Revenue by Principal Product
Net Sales	82,488	72,823	234,448	225,851
Retail and Wholesale Products | Cat Litter
Revenue by Principal Product
Net Sales	69,219	59,743	198,895	190,656
Retail and Wholesale Products | Industrial and Sports
Revenue by Principal Product
Net Sales	13,269	13,080	35,553	35,195
Retail and Wholesale Products | Agricultural and Horticultural
Revenue by Principal Product
Net Sales	0	0	0	0
Retail and Wholesale Products | Fluids Purification
Revenue by Principal Product
Net Sales	0	0	0	0
Retail and Wholesale Products | Animal Health & Nutrition
Revenue by Principal Product
Net Sales	$ 0	$ 0	$ 0	$ 0