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v3.25.3

Summary of Significant Accounting and Reporting Policies (Revenue Recognition, Narrative) (Details) - USD ($) | 12 Months Ended
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Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2023
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net sales | $ 499,528,000 | $ 540,403,000 | $ 549,994,000
Contract liabilities | 62,546,000 | 65,834,000 | 66,351,000
Revenue recognized, included in contract liabilities in prior period | 54,686,000 | 48,902,000 |
Capitalized contract cost, gross | 2,887,000 | 2,863,000 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-08-01 |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Remaining performance obligations, amount | $ 672,053,000 |  |
Remaining performance obligations, period | 24 months |  |
International |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Net sales | $ 105,095,000 | $ 115,924,000 | $ 132,117,000
Customer Concentration Risk | Net sales | Verizon Communications Inc. |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Concentration risk, percentage |  |  | 10.60%
Geographic Concentration Risk | Net sales |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Concentration risk, percentage | 100.00% | 100.00% | 100.00%
Geographic Concentration Risk | Net sales | International |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |
Concentration risk, percentage | 21.00% | 21.50% | 24.00%
Net sales | $ 105,095,000 | $ 115,924,000 | $ 132,117,000

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