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Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2026 | Apr. 30, 2025 | Apr. 30, 2026 | Apr. 30, 2025 | Jul. 31, 2025
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | $ 106,004,000 | $ 126,787,000 | $ 323,797,000 | $ 369,161,000 |
Cost of sales | 69,938,000 | 87,842,000 | 214,742,000 | 281,960,000 |
Selling, general and administrative | 29,331,000 | 30,203,000 | 86,950,000 | 115,679,000 |
Research and development | 5,220,000 | 4,425,000 | 13,440,000 | 12,492,000 |
Amortization of intangibles | 4,597,000 | 5,044,000 | 14,684,000 | 16,680,000 |
Impairment of long-lived assets, including goodwill | 0 | 0 | 0 | 79,555,000 |
Segment operating income | (3,122,000) | (1,532,000) | (7,115,000) | (140,959,000) |
Unallocated corporate expenses | 9,015,000 | 11,800,000 | 28,633,000 | 39,322,000 |
CEO transition costs | 40,000 | 805,000 | 1,096,000 | 1,072,000 |
Interest expense | 11,537,000 | 12,907,000 | 34,314,000 | 33,447,000 |
Interest (income) and other | 5,000 | (509,000) | (426,000) | 0 |
Change in fair value of warrants and derivatives | (12,479,000) | (49,542,000) | (9,763,000) | (15,450,000) |
Loss before income taxes | (2,185,000) | 32,133,000 | (31,240,000) | (163,847,000) |
Purchases of property, plant and equipment | 5,428,000 | 2,461,000 | 13,112,000 | 6,118,000 |
Consolidated purchases of property, plant and equipment | 5,435,000 | 2,461,000 | 13,119,000 | 6,529,000 |
Depreciation expense | 3,023,000 | 2,605,000 | 8,768,000 | 8,030,000 |
Depreciation and amortization of property, plant and equipment | 3,129,000 | 2,726,000 | 9,094,000 | 8,400,000 |
Total segment assets | 666,704,000 | 719,382,000 | 666,704,000 | 719,382,000 |
Total assets | 693,483,000 | 751,144,000 | 693,483,000 | 751,144,000 | $ 740,835,000
Proxy solicitation costs | 0 | 0 | 0 | 2,682,000 |
Write-off of deferred financing costs and debt discounts | 0 | 3,479,000 | 0 | 4,891,000 |
Satellite and Space Communications |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 50,331,000 | 67,566,000 | 156,041,000 | 200,220,000 |
Purchases of property, plant and equipment |  | 171,000 |  |  |
Allerium |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 55,673,000 | 59,221,000 | 167,756,000 | 168,941,000 |
Purchases of property, plant and equipment |  | 2,290,000 |  |  |
Satellite and Space Communications |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Purchases of property, plant and equipment | 617,000 |  | 1,183,000 | 310,000 |
Depreciation expense | 674,000 | 680,000 | 1,996,000 | 2,197,000 |
Total segment assets | 228,553,000 | 268,261,000 | 228,553,000 | 268,261,000 |
Allerium |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Purchases of property, plant and equipment | 4,811,000 |  | 11,929,000 | 5,808,000 |
Depreciation expense | 2,349,000 | 1,925,000 | 6,772,000 | 5,833,000 |
Total segment assets | 438,151,000 | 451,121,000 | 438,151,000 | 451,121,000 |
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 106,004,000 | 126,787,000 | 323,797,000 | 369,161,000 |
Segment operating income | 5,933,000 | 11,073,000 | 22,614,000 | (97,883,000) |
Operating Segments | Satellite and Space Communications |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 50,331,000 | 67,566,000 | 156,041,000 | 200,220,000 |
Cost of sales | 36,142,000 | 52,900,000 | 112,537,000 | 175,755,000 |
Selling, general and administrative | 9,664,000 | 9,082,000 | 27,627,000 | 50,154,000 |
Research and development | 1,877,000 | 1,441,000 | 4,676,000 | 3,839,000 |
Amortization of intangibles | 1,073,000 | 1,426,000 | 3,925,000 | 5,828,000 |
Impairment of long-lived assets, including goodwill |  |  | 0 | 79,555,000 |
Segment operating income | 1,575,000 | 2,717,000 | 7,276,000 | (114,911,000) |
Operating Segments | Allerium |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 55,673,000 | 59,221,000 | 167,756,000 | 168,941,000 |
Cost of sales | 33,745,000 | 34,844,000 | 102,040,000 | 105,906,000 |
Selling, general and administrative | 10,745,000 | 9,482,000 | 30,965,000 | 26,690,000 |
Research and development | 3,301,000 | 2,921,000 | 8,654,000 | 8,465,000 |
Amortization of intangibles | 3,524,000 | 3,618,000 | 10,759,000 | 10,852,000 |
Impairment of long-lived assets, including goodwill |  |  | 0 | 0 |
Segment operating income | 4,358,000 | 8,356,000 | 15,338,000 | 17,028,000 |
Unallocated |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Unallocated purchases of property, plant and equipment | 7,000 | 0 | 7,000 | 411,000 |
Unallocated depreciation expense | 106,000 | 121,000 | 326,000 | 370,000 |
Unallocated assets | $ 26,779,000 | $ 31,762,000 | $ 26,779,000 | $ 31,762,000 |

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