Condensed Consolidated Statements of Cash Flows - 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	Jul. 31, 2023
Cash flows from operating activities:
Net loss	$ (48,739,000)	$ (10,558,000)	$ (197,146,000)	$ (11,995,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization of property, plant and equipment	2,779,000		5,674,000	5,952,000
Amortization of intangible assets with finite lives	5,043,000	5,288,000	11,636,000	10,577,000
Amortization of stock-based compensation			1,325,000	4,834,000
Amortization of cost to fulfill assets	0		261,000	480,000
Paid-in-kind interest under term loan			5,528,000	0
Accretion of interest on subordinated credit facility			1,563,000	0
Amortization of deferred financing costs			2,157,000	1,543,000
Write-off of deferred financing costs	0	0	1,412,000	0
Change in fair value of warrants and derivatives	28,568,000	0	34,092,000	0
Gain on business divestiture, net	0	(2,213,000)	0	(2,213,000)	$ 1,199,000
Changes in other liabilities			0	(2,067,000)
Loss on disposal of property, plant and equipment			299,000	19,000
Provision for allowance for doubtful accounts and contract assets			17,861,000	620,000
Provision for excess and obsolete inventory			13,534,000	1,473,000
Deferred income tax (benefit) expense			(493,000)	1,135,000
Impairment of long-lived assets, including goodwill	0	0	79,555,000	0
Changes in assets and liabilities, net of effects of divestiture:
Accounts receivable			10,537,000	(40,456,000)
Inventories			(1,799,000)	913,000
Prepaid expenses and other current assets			155,000	2,157,000
Other assets			(1,252,000)	2,397,000
Accounts payable			1,386,000	(19,345,000)
Accrued expenses and other current liabilities			(8,314,000)	(3,089,000)
Contract liabilities			(1,000,000)	2,807,000
Other liabilities, non-current			185,000	172,000
Interest payable			(431,000)	(51,000)
Income taxes payable			1,235,000	2,932,000
Net cash used in operating activities			(22,040,000)	(41,205,000)	(54,495,000)	$ (4,433,000)
Cash flows from investing activities:
Proceeds from business divestiture, net			0	32,425,000
Purchases of property, plant and equipment			(4,068,000)	(7,489,000)
Net cash (used in) provided by investing activities			(4,068,000)	24,936,000
Cash flows from financing activities:
Proceeds from subordinated credit facility			25,000,000	0
Net borrowings under revolving loan			0	22,619,000
Repayment of term loan			0	(18,738,000)
Proceeds from issuance of employee stock purchase plan shares			83,000	176,000
Payment of deferred financing costs			(3,158,000)	(2,097,000)
Remittance of employees’ statutory tax withholding for stock awards			(1,181,000)	(3,798,000)
Payment of shelf registration costs			170,000	0
Cash dividends paid on common stock			(157,000)	(265,000)
Net cash provided by financing activities			20,341,000	37,264,000
Net (decrease) increase in cash and cash equivalents			(5,767,000)	20,995,000
Cash and cash equivalents at beginning of period			32,433,000	18,961,000	18,961,000
Cash and cash equivalents at end of period	$ 26,666,000	$ 39,956,000	26,666,000	39,956,000	$ 32,433,000	$ 18,961,000
Cash paid during the period for:
Interest			11,700,000	8,693,000
Income taxes, net			639,000	1,951,000
Non-cash investing and financing activities:
Adjustment to reflect redemption value of convertible preferred stock			32,251,000	8,157,000
Term loan amendment fee paid-in-kind			3,250,000	0
Accrued additions to property, plant and equipment			768,000	1,271,000
Accrued deferred financing costs			17,000	821,000
Accrued shelf registration costs			47,000	20,000
Unpaid convertible preferred stock issuance costs			0	440,000
Issuance of restricted stock			6,000	0
Reversal of dividend equivalents			(32,000)	(36,000)
Convertible Preferred Stock
Cash flows from financing activities:
Payment of issuance costs			$ (76,000)	$ (3,833,000)