Revenue Recognition (Schedule of Disaggregation of Revenue by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2025	May 31, 2024	May 31, 2025	May 31, 2024
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 165,674	$ 133,658	$ 510,054	$ 434,805
Lease revenue	3,790	5,541	12,755	17,271
Total operating revenues	169,464	139,199	522,809	452,076
Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	155,504	124,980	481,150	408,019
Over Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	10,170	8,678	28,904	26,786
Irrigation [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	143,745	114,840	438,971	388,026
Lease revenue	0	0	0	0
Total operating revenues	143,745	114,840	438,971	388,026
Irrigation [Member] | Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	135,334	107,438	414,958	365,184
Irrigation [Member] | Over Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	8,411	7,402	24,013	22,842
Infrastructure [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	21,929	18,818	71,083	46,779
Lease revenue	3,790	5,541	12,755	17,271
Total operating revenues	25,719	24,359	83,838	64,050
Infrastructure [Member] | Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	20,170	17,542	66,192	42,835
Infrastructure [Member] | Over Time [Member]
Disaggregation Of Revenue [Line Items]
Revenue from contracts with customers	$ 1,759	$ 1,276	$ 4,891	$ 3,944