Condensed Consolidated Balance Sheet Parenthetical - USD ($) $ in Thousands	Apr. 30, 2026	Jul. 31, 2025
Allowance for doubtful accounts	$ 1,065	$ 1,493
Accumulated amortization of other intangibles	724	693
Accumulated amortization of customer list	10,124	9,278
Net unamortized debt issuance costs	$ 153	$ 183
Common
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares issued	15,349,661	15,276,261
Treasury stock, common shares	5,095,266	4,902,881
Class B
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares issued	4,650,484	4,650,484
Treasury stock, common shares	416,544	380,628