Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Net Sales	$ 126,329	$ 115,501	$ 364,552	$ 360,360
Cost of Goods Sold	(92,601)	(82,479)	(263,027)	(252,110)
Gross Profit	33,728	33,022	101,525	108,250
Selling, General and Administrative Expenses	(16,635)	(19,118)	(51,785)	(55,674)
Income from Operations	17,093	13,904	49,740	52,576
Other (Expense) Income
Interest expense	(537)	(548)	(1,648)	(1,888)
Interest income	386	122	1,087	358
Other, net	969	770	2,220	(336)
Total Other Income (Expense), Net	818	344	1,659	(1,866)
Income Before Income Taxes	17,911	14,248	51,399	50,710
Income Tax Expense	(3,385)	(2,604)	(8,848)	(9,769)
Net Income	$ 14,526	$ 11,644	$ 42,551	$ 40,941
Earnings Per Share [Abstract]
Dividends Declared Per Share (in dollars per share)	$ 0.2050	$ 0.1550	$ 0.590	$ 0.465
Common
Other (Expense) Income
Net Income	$ 11,097	$ 8,884	$ 32,501	$ 31,201
Earnings Per Share [Abstract]
Basic Common (in dollars per share)	$ 1.08	$ 0.86	$ 3.15	$ 3.03
Diluted Common (in dollars per share)	$ 1.00	$ 0.80	$ 2.93	$ 2.81
Average Shares Outstanding
Basic Common (in shares)	9,848	9,907	9,884	9,882
Diluted Common (in shares)	13,896	13,909	13,919	13,873
Class B
Other (Expense) Income
Net Income	$ 3,429	$ 2,760	$ 10,050	$ 9,740
Earnings Per Share [Abstract]
Basic Common (in dollars per share)	$ 0.81	$ 0.65	$ 2.37	$ 2.28
Diluted Common (in dollars per share)	0.81	0.65	2.37	2.28
Dividends Declared Per Share (in dollars per share)	$ 0.1530	$ 0.1165	$ 0.441	$ 0.350
Average Shares Outstanding
Basic Common (in shares)	4,048	4,002	4,035	3,991
Diluted Common (in shares)	4,048	4,002	4,035	3,991