Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Feb. 28, 2025	Aug. 31, 2024	Feb. 29, 2024
Debt Instrument [Line Items]
Total debt	$ 115,377	$ 115,492	$ 115,598
Less current portion	(231)	(228)	(228)
Less unamortized debt issuance costs	(243)	(270)	(295)
Total long-term debt	114,903	114,994	115,075
Elecsys Series 2006A Bonds [Member]
Debt Instrument [Line Items]
Total debt	377	492	598
Series A Senior Notes [Member]
Debt Instrument [Line Items]
Total debt	$ 115,000	$ 115,000	$ 115,000