Goodwill (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2024	Jul. 31, 2024	Apr. 30, 2025
Goodwill [Roll Forward]
Goodwill		$ 284,180,000	$ 204,625,000
Goodwill, impaired, accumulated impairment loss		48,925,000	128,480,000
Impairment of long-term assets to be disposed of		15,600,000
Impairment of intangible assets, finite-lived		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		$ 110,090,000	30,535,000
Satellite and Space Communications | Power Systems Technologies (PST)
Goodwill [Roll Forward]
Goodwill, Measurement Period Adjustment			(79,555,000)
Satellite and Space Communications | UHP
Goodwill [Roll Forward]
Goodwill, impairment loss	$ 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