Segment Information - Narrative (Details)	3 Months Ended			6 Months Ended
	Jan. 31, 2025 USD ($) ft²	Oct. 31, 2024 USD ($)	Jan. 31, 2024 USD ($)	Jan. 31, 2025 USD ($) ft²	Jan. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Consolidated total	$ 0			$ 280,000
Chandler, Arizona
Segment Reporting Information [Line Items]
Area of property (in sq ft) | ft²	146,000			146,000
UHP | Satellite and Space Communications
Segment Reporting Information [Line Items]
Goodwill, impairment loss		$ 79,555,000
Unallocated
Segment Reporting Information [Line Items]
Unallocated amounts	$ 1,970,000		$ 1,271,000	$ 5,993,000	$ 4,190,000
Consolidated total			978,000		2,348,000
Operating Segments | Satellite and Space Communications
Segment Reporting Information [Line Items]
Unallocated amounts	$ 1,430,000		1,454,000	15,170,000	2,244,000
Consolidated total			$ 978,000	280,000	$ 2,348,000
Operating Segments | Satellite and Space Communications | Cost of sales
Segment Reporting Information [Line Items]
Unallocated amounts				11,369,000
Operating Segments | Satellite and Space Communications | Selling, general and administrative expenses
Segment Reporting Information [Line Items]
Unallocated amounts				$ 3,801,000