Net Earnings Per Share (Schedule of Computation of Basic and Diluted Net Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Earnings Per Share [Abstract]
Net earnings	$ 18,217	$ 7,901
Weighted average shares outstanding	10,989	10,927
Diluted effect of stock awards	84	99
Weighted average shares outstanding assuming dilution	11,073	11,026
Basic net earnings per share	$ 1.66	$ 0.72
Diluted net earnings per share	$ 1.65	$ 0.72