Inventories (Narrative) (Details) - USD ($) $ in Thousands	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2022
Inventory [Line Items]
Inventories, net	$ 164,144	$ 155,932	$ 188,404
LIFO, basis amount	44,200	42,200	52,900
FIFO, basis amount	$ 119,900	$ 113,800	$ 135,500