Segment Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024	Jul. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 126,787,000	$ 128,076,000	$ 369,161,000	$ 414,212,000
Adjusted EBITDA	19,622,000	18,513,000	11,714,000	64,070,000
Unallocated corporate expenses	(7,046,000)		(27,001,000)
Amortization of cost to fulfill assets	0		(261,000)	(720,000)
Restructuring costs	(4,338,000)		(14,222,000)
Amortization of stock-based compensation	(1,195,000)	(404,000)	(2,520,000)	(5,238,000)
Depreciation	(2,726,000)		(8,400,000)	(9,073,000)
Consolidated total	0		(280,000)
Amortization of intangibles	(5,044,000)	(5,289,000)	(16,680,000)	(15,866,000)
Impairment of long-lived assets, including goodwill	0	0	(79,555,000)	0
Proxy solicitation costs	0	0	(2,682,000)	0
CEO transition costs	(805,000)	(2,492,000)	(1,072,000)	(2,492,000)
Interest (income) and other	509,000	(409,000)	0	(1,246,000)
Interest expense	(12,907,000)	(5,146,000)	(33,447,000)	(15,343,000)
Write-off of deferred financing costs and debt discounts	(3,479,000)	0	(4,891,000)	0
(Loss) gain on business divestiture, net	0	(200,000)	0	2,013,000	$ (1,199,000)
Loss before income taxes	32,133,000	(2,586,000)	(163,847,000)	(8,561,000)
Purchases of property, plant and equipment	2,461,000	2,542,000	6,118,000	7,938,000
Unallocated amounts		125,000		966,000
Consolidated total	2,461,000	2,667,000	6,529,000	8,904,000
Total assets as of April 30, 2024			719,382,000	953,618,000
Unallocated amounts				37,381,000
Total assets	751,144,000	990,999,000	751,144,000	990,999,000	$ 912,434,000
Convertible Preferred Stock, Fair Value Adjustment	49,542,000	6,439,000	15,450,000	6,439,000
Satellite and Space Communications
Segment Reporting Information [Line Items]
Net sales	67,566,000	71,445,000	200,220,000	252,436,000
Adjusted EBITDA	5,705,000	7,183,000	(22,107,000)	29,376,000
Purchases of property, plant and equipment	171,000	388,000	310,000	1,763,000
Total assets as of April 30, 2024			268,261,000	498,449,000
Terrestrial and Wireless Networks
Segment Reporting Information [Line Items]
Net sales	59,221,000	56,631,000	168,941,000	161,776,000
Adjusted EBITDA	13,917,000	11,330,000	33,821,000	34,694,000
Purchases of property, plant and equipment	2,290,000	2,154,000	5,808,000	6,175,000
Total assets as of April 30, 2024			451,121,000	455,169,000
Operating Segments
Segment Reporting Information [Line Items]
Net sales	126,787,000	128,076,000	369,161,000	414,212,000
Operating Segments | Satellite and Space Communications
Segment Reporting Information [Line Items]
Net sales	67,566,000	71,445,000	200,220,000	252,436,000
Consolidated total		(880,000)	(280,000)	(3,228,000)
Operating Segments | Terrestrial and Wireless Networks
Segment Reporting Information [Line Items]
Net sales	59,221,000	56,631,000	168,941,000	161,776,000
Unallocated
Segment Reporting Information [Line Items]
Unallocated corporate expenses		(6,602,000)		(18,680,000)
Amortization of cost to fulfill assets		(240,000)		(720,000)
Restructuring costs		(2,755,000)		(9,197,000)
Amortization of stock-based compensation		404,000		5,238,000
Depreciation		(3,121,000)		(9,073,000)
Consolidated total		(880,000)		(3,228,000)
Amortization of intangibles		(5,289,000)		(15,866,000)
Interest (income) and other		(409,000)		(1,246,000)
Interest expense		(5,146,000)		(15,343,000)
(Loss) gain on business divestiture, net		(200,000)		2,013,000
Loss before income taxes		$ (2,586,000)		$ (8,561,000)
Unallocated amounts	$ 0		411,000
Unallocated amounts			$ 31,762,000