Condensed Consolidated Statements of Income and Retained Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018
Net Sales	$ 70,885	$ 64,847	$ 206,908	$ 200,387
Cost of Sales	(54,051)	(47,187)	(158,660)	(144,095)
Gross Profit	16,834	17,660	48,248	56,292
Selling, General and Administrative Expenses	(14,507)	(14,366)	(42,091)	(43,600)
Income from Operations	2,327	3,294	6,157	12,692
Other Income (Expense)
Interest expense	(141)	(149)	(434)	(549)
Interest income	53	80	149	199
Other, net	4,465	70	4,504	(137)
Total Other Income (Expense), Net	4,377	1	4,219	(487)
Income Before Income Taxes	6,704	3,295	10,376	12,205
Income Tax Expense (Benefit)	(1,143)	290	(1,599)	(6,666)
Net Income	5,561	3,585	8,777	5,539
Net Loss Attributable to Noncontrolling Interest	(58)	0	(35)	0
Net Income Attributable to Oil-Dri	5,619	3,585	8,812	5,539
Retained Earnings:
Balance at beginning of period			158,935	154,735
Cash dividends declared			(5,029)	(4,676)
Tax Cuts And Jobs Act Reclassification From AOCI To RetainedEarnings			0	2,264
Balance at End of Period	$ 162,718	$ 157,862	$ 162,718	$ 157,862
Net Income Per Share
Diluted Common (in dollars per share)	$ 0.74	$ 0.48	$ 1.17	$ 0.75
Average Shares Outstanding
Diluted Common (in shares)	7,253	7,222	7,245	7,217
Common Stock
Net Income Per Share
Basic Common (in dollars per share)	$ 0.81	$ 0.53	$ 1.27	$ 0.82
Average Shares Outstanding
Basic Common (in shares)	5,126	5,037	5,108	5,032
Dividends Declared Per Share (in dollars per share)	$ 0.2400	$ 0.2300	$ 0.7200	$ 0.6900
Common Class B
Net Income Per Share
Basic Common (in dollars per share)	$ 0.61	$ 0.40	$ 0.95	$ 0.62
Average Shares Outstanding
Basic Common (in shares)	2,068	2,102	2,068	2,099
Dividends Declared Per Share (in dollars per share)	$ 0.1800	$ 0.1725	$ 0.5400	$ 0.5175