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Accounts Receivable - Schedule of Accounts, Notes, Loans and Financing Receivable (Details) - USD ($) | Jul. 31, 2025 | Jul. 31, 2024
--- | --- | ---
Statement [Line Items] |  |
Total accounts receivable | $ 163,993,000 | $ 197,527,000
Less: Allowance for doubtful accounts | 19,156,000 | 1,932,000
Accounts receivable, net | 144,837,000 | 195,595,000
Billed Receivables | Commercial and International Customers |  |
Statement [Line Items] |  |
Total accounts receivable | 57,713,000 | 53,108,000
Billed Receivables | U.S. Government and Its Agencies |  |
Statement [Line Items] |  |
Total accounts receivable | 15,610,000 | 20,682,000
Unbilled Receivables | Commercial and International Customers |  |
Statement [Line Items] |  |
Total accounts receivable | 69,987,000 | 72,540,000
Unbilled Receivables | U.S. Government and Its Agencies |  |
Statement [Line Items] |  |
Total accounts receivable | $ 20,683,000 | $ 51,197,000

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