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Goodwill (Details) - USD ($)	3 Months Ended	12 Months Ended
	Oct. 31, 2024	Jul. 31, 2024
Goodwill [Roll Forward]
Goodwill	$ 204,625,000	$ 284,180,000
Goodwill, impaired, accumulated impairment loss	128,480,000	48,925,000
Impairment of long-term assets to be disposed of		15,600,000
Impairment of intangible assets, finite-lived	9,925,000	9,925,000
Tangible asset impairment charges		2,651,000
Other asset impairment charges		1,873,000
Operating lease, impairment loss		$ 1,151,000
Power Systems Technologies (PST)
Goodwill [Roll Forward]
Goodwill, Measurement Period Adjustment	$ (79,555,000)
Common Stock
Goodwill [Roll Forward]
Share price (in dollars per share)	$ 3.72	$ 3.17
Satellite and Space Communications
Goodwill [Roll Forward]
Goodwill	$ 30,535,000	$ 110,090,000
Satellite and Space Communications | Power Systems Technologies (PST)
Goodwill [Roll Forward]
Goodwill, Measurement Period Adjustment	(79,555,000)
Terrestrial and Wireless Networks
Goodwill [Roll Forward]
Goodwill	174,090,000	$ 174,090,000
Percentage of fair value in excess of carrying amount for reporting unit		24.70%
Terrestrial and Wireless Networks | Power Systems Technologies (PST)
Goodwill [Roll Forward]
Goodwill, Measurement Period Adjustment	0
Satellite And Space Segment Communications | UHP
Goodwill [Roll Forward]
Goodwill, impairment loss	$ 79,555,000

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