SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Earnings Per Share(Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income attributable to Oil-Dri	$ 53,996	$ 39,426	$ 29,551
Distributed and undistributed earnings on restricted shares	(2,580)	(2,165)	(1,518)
Income available to stockholders	51,416	37,261	28,033
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income attributable to Oil-Dri	41,173	29,981	22,712
Distributed and undistributed earnings on restricted shares	(1,732)	(1,410)	(1,232)
Income available to stockholders	$ 39,441	$ 28,571	$ 21,480
Earnings Per Share, Basic (in shares)	9,889,000	9,771,000	9,651,000
Earnings Per Share, Basic	$ 3.99	$ 2.92	$ 2.23
Effect of dilution - Net Income	$ 11,975	$ 8,690	$ 6,553
Net income assuming dilution	$ 51,416	$ 37,261	$ 28,033
Effect of dilution - Shares	3,994,000	3,952,000	3,917,000
Shares assuming dilution	13,883,000	13,723,000	13,568,000
Earnings per Share, Diluted	$ 3.70	$ 2.72	$ 2.07
Common Stock | Restricted Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	275,327	317,722	314,064
Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income attributable to Oil-Dri	$ 12,823	$ 9,445	$ 6,839
Distributed and undistributed earnings on restricted shares	(848)	(755)	(286)
Income available to stockholders	$ 11,975	$ 8,690	$ 6,553
Earnings Per Share, Basic (in shares)	3,994,000	3,952,000	3,917,000
Earnings Per Share, Basic	$ 3.00	$ 2.20	$ 1.67
Effect of dilution - Net Income	$ 0	$ 0	$ 0
Net income assuming dilution	$ 11,975	$ 8,690	$ 6,553
Effect of dilution - Shares	0	0	0
Shares assuming dilution	3,994,000	3,952,000	3,917,000
Earnings per Share, Diluted	$ 3.00	$ 2.20	$ 1.67
Class B | Restricted Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	139,484	108,740	71,390