Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024	Jul. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 126,574,000	$ 134,225,000	$ 242,374,000	$ 286,136,000
Adjusted EBITDA	13,625,000	20,789,000	3,461,000	45,557,000
Unallocated corporate expenses	(10,722,000)		(19,955,000)
Restructuring costs	(3,400,000)		(21,253,000)
Consolidated total	0		(280,000)
Amortization of cost to fulfill assets	0		(261,000)	(480,000)
Depreciation	(2,779,000)		(5,674,000)	(5,952,000)
Amortization of intangibles	(5,043,000)	(5,288,000)	(11,636,000)	(10,577,000)
Equity-classified stock award compensation	(1,170,000)	(2,189,000)	(1,325,000)	(4,834,000)
Write-off of deferred financing costs	0	0	(1,412,000)	0
Gain on business divestiture, net	0	2,213,000	0	2,213,000	$ (1,199,000)
Interest (income) and other	126,000	(902,000)	(509,000)	(837,000)
Interest expense	(11,008,000)	(5,265,000)	(20,540,000)	(10,197,000)
Loss before income taxes	(49,707,000)	(3,194,000)	(195,980,000)	(5,975,000)
Purchases of property, plant and equipment	1,499,000	4,009,000	3,657,000	6,648,000
Unallocated amounts		264,000		841,000
Consolidated total	1,653,000	4,273,000	4,068,000	7,489,000
Total assets	741,786,000	941,254,000	741,786,000	941,254,000
Unallocated amounts		55,501,000		55,501,000
Total assets	770,561,000	996,755,000	770,561,000	996,755,000	$ 912,434,000
Impairment of long-lived assets, including goodwill	0	0	(79,555,000)	0
CEO transition costs	331,000	0	(267,000)	0
Proxy solicitation costs	(1,099,000)	0	(2,682,000)	0
Convertible Preferred Stock, Fair Value Adjustment	(28,568,000)	0	(34,092,000)	0
Satellite and Space Communications
Segment Reporting Information [Line Items]
Net sales	73,721,000	78,603,000	132,654,000	180,991,000
Adjusted EBITDA	4,705,000	7,062,000	(16,443,000)	22,193,000
Purchases of property, plant and equipment	89,000	1,724,000	139,000	2,627,000
Total assets	293,176,000	480,008,000	293,176,000	480,008,000
Terrestrial and Wireless Networks
Segment Reporting Information [Line Items]
Net sales	52,853,000	55,622,000	109,720,000	105,145,000
Adjusted EBITDA	8,920,000	13,727,000	19,904,000	23,364,000
Purchases of property, plant and equipment	1,410,000	2,285,000	3,518,000	4,021,000
Total assets	448,610,000	461,246,000	448,610,000	461,246,000
Operating Segments
Segment Reporting Information [Line Items]
Net sales	126,574,000	134,225,000	242,374,000	286,136,000
Operating Segments | Satellite and Space Communications
Segment Reporting Information [Line Items]
Net sales	73,721,000	78,603,000	132,654,000	180,991,000
Consolidated total		(978,000)	(280,000)	(2,348,000)
Operating Segments | Terrestrial and Wireless Networks
Segment Reporting Information [Line Items]
Net sales	52,853,000	55,622,000	109,720,000	105,145,000
Unallocated
Segment Reporting Information [Line Items]
Unallocated corporate expenses		(5,678,000)		(12,078,000)
Restructuring costs		(2,726,000)		(6,442,000)
Consolidated total		(978,000)		(2,348,000)
Amortization of cost to fulfill assets		(240,000)		(480,000)
Depreciation		(2,930,000)		(5,952,000)
Amortization of intangibles		(5,288,000)		(10,577,000)
Equity-classified stock award compensation		2,189,000		4,834,000
Gain on business divestiture, net		2,213,000		2,213,000
Interest (income) and other		(902,000)		(837,000)
Interest expense		(5,265,000)		(10,197,000)
Loss before income taxes		$ (3,194,000)		$ (5,975,000)
Unallocated amounts	154,000		411,000
Unallocated amounts	$ 28,775,000		$ 28,775,000