Valuation and Qualifying Accounts and Reserves (Details) - USD ($)	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Inventory writeoff	$ 2,900,000
Allowance for doubtful accounts receivable
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	19,156,000	$ 1,932,000	$ 2,089,000	$ 2,337,000
Charged to cost and expenses	17,608,000	1,422,000	261,000
Transfers (deductions)	(384,000)	(1,579,000)	(509,000)
Balance at end of period	19,156,000	1,932,000	2,089,000
Inventory reserves
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	26,423,000	18,271,000	24,659,000	23,121,000
Charged to cost and expenses	16,202,000	2,801,000	4,871,000
Transfers (deductions)	(8,050,000)	(9,189,000)	(3,333,000)
Balance at end of period	26,423,000	18,271,000	24,659,000
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	70,973,000	44,888,000	34,478,000	$ 31,227,000
Charged to cost and expenses	26,413,000	12,343,000	4,617,000
Transfers (deductions)	(328,000)	(1,933,000)	(1,366,000)
Balance at end of period	$ 70,973,000	$ 44,888,000	$ 34,478,000