Leases - Lease Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Lease, Cost [Abstract]
Operating lease expense	$ 28,568	$ 30,240	$ 29,513
Short-term expense	10,340	10,303	10,996
Variable lease expense	1,622	1,913	5,620
Total finance lease expense	13,430	9,238	10,054
Total lease expense	53,960	51,694	56,183
Operating expense - personnel, vehicle, plant and other
Lease, Cost [Abstract]
Operating lease expense	10,088	9,166	7,194
Short-term expense	9,731	9,952	10,654
Variable lease expense	843	1,168	3,032
Operating expense - equipment lease expense
Lease, Cost [Abstract]
Operating lease expense	17,586	20,727	19,724
Variable lease expense	779	745	2,588
Cost of Sales
Lease, Cost [Abstract]
Operating lease expense			990
General and Administrative Expense [Member]
Lease, Cost [Abstract]
Operating lease expense	894	347	1,605
Short-term expense	609	351	342
Depreciation And Amortization Expense
Lease, Cost [Abstract]
Total finance lease expense	10,614	7,128	7,540
Interest Expense
Lease, Cost [Abstract]
Total finance lease expense	$ 2,816	$ 2,110	$ 2,514