Condensed Consolidated Balance Sheet Parenthetical - USD ($) $ in Thousands	Jan. 31, 2024	Jul. 31, 2023
Allowance for doubtful accounts	$ 1,072	$ 1,087
Accumulated amortization of other intangibles	8,383	8,341
Net unamortized debt issuance costs	$ 149	$ 173
Common Stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares issued	8,817,723	8,750,223
Treasury stock, common shares	3,694,081	3,658,989
Common Class B
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares issued	2,524,556	2,397,056
Treasury stock, common shares	362,649	351,641