Business Segments (Schedule of Capital Expenditures and Depreciation and Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Segment Reporting Information [Line Items]
Total capital expenditures	$ 42,496	$ 28,979	$ 18,775
Depreciation and amortization	20,896	21,200	19,282
Irrigation [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	38,026	24,720	13,043
Depreciation and amortization	14,198	14,480	12,834
Infrastructure [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	4,147	4,207	5,287
Depreciation and amortization	4,417	4,396	4,023
Corporate [Member]
Segment Reporting Information [Line Items]
Total capital expenditures	323	52	445
Depreciation and amortization	$ 2,281	$ 2,324	$ 2,425