Basis of Statement Presentation Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income Attributable to Oil-Dri	$ 12,382	$ 3,856	$ 23,124	$ 9,097
Distributed and undistributed earnings on restricted shares	(698)		(1,339)
Income available to stockholders	11,684		$ 21,785
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dividend Distribution Percentage			133.33%
Dividend Distribution Percentage Increase			33.33%
Common Stock, Voting Rights			one
Net Income Attributable to Oil-Dri	9,415		$ 17,597
Distributed and undistributed earnings on restricted shares	(453)		(905)
Income available to stockholders	$ 8,962		$ 16,692
Weighted Average Shares Outstanding	4,883	4,829	4,856	4,817
Basic EPS	$ 1.84	$ 0.58	$ 3.44	$ 1.37
Effect of dilution - Net Income	$ 2,722		$ 5,093
Net income assuming dilution	$ 11,684		$ 21,785
Effect of dilution - Shares	1,977		1,971
Shares assuming dilution	6,860	4,965	6,827	4,937
Diluted EPS	$ 1.70	$ 0.56	$ 3.19	$ 1.34
Common Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Common Stock, Voting Rights			ten
Net Income Attributable to Oil-Dri	$ 2,967		$ 5,527
Distributed and undistributed earnings on restricted shares	(245)		(434)
Income available to stockholders	$ 2,722		$ 5,093
Weighted Average Shares Outstanding	1,977	1,964	1,971	1,953
Basic EPS	$ 1.38	$ 0.44	$ 2.58	$ 1.03
Effect of dilution - Net Income	$ 0		$ 0
Net income assuming dilution	$ 2,722		$ 5,093
Effect of dilution - Shares	0		0
Shares assuming dilution	1,977	1,985	1,971	1,975
Diluted EPS	$ 1.38	$ 0.43	$ 2.58	$ 1.02