Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 14,526	$ 11,644	$ 42,551	$ 40,941
Distributed and undistributed earnings on restricted shares	(623)	(540)	(1,820)	(1,940)
Income available to stockholders	13,903	11,104	40,731	39,001
Common
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	11,097	8,884	32,501	31,201
Distributed and undistributed earnings on restricted shares	(472)	(367)	(1,334)	(1,285)
Income available to stockholders	$ 10,625	$ 8,517	$ 31,167	$ 29,916
Weighted Average Shares Outstanding (Denominator)	9,848,000	9,907,000	9,884,000	9,882,000
Basic EPS	$ 1.08	$ 0.86	$ 3.15	$ 3.03
Effect of dilution - Net Income	$ 3,278	$ 2,587	$ 9,564	$ 9,085
Net income assuming dilution	$ 13,903	$ 11,104	$ 40,731	$ 39,001
Effect of dilution - Shares	4,048,000	4,002,000	4,035,000	3,991,000
Diluted Common (in shares)	13,896,000	13,909,000	13,919,000	13,873,000
Diluted EPS	$ 1.00	$ 0.80	$ 2.93	$ 2.81
Dividend Distribution Percentage			133.33%
Dividend Distribution Percentage Increase			33.33%
Common Stock, Voting Rights			one
Common | Restricted Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share (in shares)	267,018	268,920	281,219	259,469
Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income	$ 3,429	$ 2,760	$ 10,050	$ 9,740
Distributed and undistributed earnings on restricted shares	(151)	(173)	(486)	(655)
Income available to stockholders	$ 3,278	$ 2,587	$ 9,564	$ 9,085
Weighted Average Shares Outstanding (Denominator)	4,048,000	4,002,000	4,035,000	3,991,000
Basic EPS	$ 0.81	$ 0.65	$ 2.37	$ 2.28
Effect of dilution - Net Income	$ 0	$ 0	$ 0	$ 0
Net income assuming dilution	$ 3,278	$ 2,587	$ 9,564	$ 9,085
Effect of dilution - Shares	0	0	0	0
Diluted Common (in shares)	4,048,000	4,002,000	4,035,000	3,991,000
Diluted EPS	$ 0.81	$ 0.65	$ 2.37	$ 2.28
Common Stock, Voting Rights			ten
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 (in shares)	125,345	132,528	135,090	124,187