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v3.23.3

Accounts Receivable (Details) - USD ($) | 12 Months Ended
--- | ---
Jul. 31, 2023 | Jul. 31, 2022
Statement [Line Items] |  |
Total accounts receivable | $ 165,248,000 | $ 126,048,000
Less: Allowance for doubtful accounts | 2,089,000 | 2,337,000
Accounts receivable, net | $ 163,159,000 | $ 123,711,000
U.S. Government and Its Agencies | Accounts Receivable | Customer Concentration Risk |  |
Statement [Line Items] |  |
Concentration risk, percentage | 35.30% | 20.90%
AT&T, Inc. | Accounts Receivable | Customer Concentration Risk |  |
Statement [Line Items] |  |
Concentration risk, percentage | 11.00% |
Verizon Communications Inc. | Accounts Receivable | Customer Concentration Risk |  |
Statement [Line Items] |  |
Concentration risk, percentage |  | 13.40%
Billed Receivables | Commercial and International Customers |  |
Statement [Line Items] |  |
Total accounts receivable | $ 52,438,000 | $ 59,922,000
Billed Receivables | U.S. Government and Its Agencies |  |
Statement [Line Items] |  |
Total accounts receivable | 31,149,000 | 24,776,000
Unbilled Receivables |  |
Statement [Line Items] |  |
Long-term unbilled receivables | 2,993,000 |
Unbilled Receivables | Commercial and International Customers |  |
Statement [Line Items] |  |
Total accounts receivable | 54,469,000 | 39,826,000
Unbilled Receivables | U.S. Government and Its Agencies |  |
Statement [Line Items] |  |
Total accounts receivable | $ 27,192,000 | $ 1,524,000

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