Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2023
Cash flows from operating activities:
Net loss	$ (155,302,000)	$ (99,985,000)	$ (26,899,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization of property, plant and equipment	11,798,000	12,159,000	11,922,000
Amortization of intangible assets with finite lives	21,723,000	21,154,000	21,396,000
Amortization of stock-based compensation	3,120,000	6,096,000	10,107,000
Amortization of deferred financing costs and debt discount related to credit facility	4,968,000	3,985,000	1,852,000
Amortization of Costs to Fulfill Assets	261,000	960,000	959,000
Write-off of deferred financing costs and debt discounts	8,977,000	1,832,000	0
CEO transition costs related to equity-classified stock-based awards	0	0	3,764,000
Change in fair value of convertible preferred stock purchase option liability	0	0	0
Change in fair value of warrants and derivatives	(38,498,000)	(4,273,000)	0
Paid-in-kind interest under term loan	5,528,000	337,000	0
Amortization of deferred financing costs, debt discount and accreted interest related to subordinated credit facility	8,460,000	0	0
Loss on business divestiture	0	1,199,000	0
Changes in other liabilities	0	(4,110,000)	(4,133,000)
Loss on disposal of property, plant and equipment	310,000	889,000	48,000
Provision for allowance for doubtful accounts and contract assets	17,608,000	1,422,000	261,000
Provision for excess and obsolete inventory	16,202,000	2,801,000	4,871,000
Deferred income tax benefit	(1,700,000)	(2,990,000)	(6,060,000)
Impairment of long-lived assets, including goodwill	79,555,000	64,525,000	0
Changes in assets and liabilities, net of effects of divestitures:
Accounts receivable	33,150,000	(38,305,000)	(39,709,000)
Inventories	7,708,000	(7,763,000)	(14,885,000)
Prepaid expenses and other current assets	(1,161,000)	4,282,000	1,656,000
Other assets	(2,074,000)	(717,000)	(3,356,000)
Accounts payable	(15,194,000)	(18,930,000)	20,362,000
Accrued expenses and other current liabilities	(8,964,000)	755,000	671,000
Contract liabilities	(3,318,000)	2,755,000	10,194,000
Other liabilities, non-current	(12,000)	14,000	(324,000)
Interest payable	(1,057,000)	(296,000)	1,197,000
Income taxes payable	(380,000)	(2,291,000)	1,673,000
Net cash used in operating activities	(8,292,000)	(54,495,000)	(4,433,000)
Cash flows from investing activities:
Purchases of property, plant and equipment	(8,565,000)	(13,083,000)	(18,311,000)
Net cash (used in) provided by investing activities	(8,565,000)	20,142,000	(18,311,000)
Cash flows from financing activities:
Proceeds from subordinated credit facility	100,000,000	0	0
Contribution for constructing long-lived assets	2,814,000	0	0
Proceeds from term loan	0	157,140,000	0
Repayment of term loan	56,746,000	48,800,000	1,875,000
Net (payments) borrowings under revolving loans	(14,859,000)	(85,300,000)	36,900,000
Payment of deferred financing costs and debt discount	(4,545,000)	(10,294,000)	(3,809,000)
Proceeds from issuance of convertible preferred stock	0	43,200,000	0
Payment of convertible preferred stock issuance costs and fees	(726,000)	(4,272,000)	0
Cash dividends paid on common stock	(158,000)	(268,000)	(8,661,000)
Remittance of employees' statutory tax withholding for stock awards	(1,248,000)	(3,815,000)	(2,869,000)
Proceeds from issuance of employee stock purchase plan shares	118,000	254,000	470,000
Repayment of principal amounts under finance lease and other obligations	0	0	(4,000)
Net cash provided by financing activities	24,443,000	47,825,000	20,051,000
Net increase (decrease) in cash and cash equivalents	7,586,000	13,472,000	(2,693,000)
Cash and cash equivalents at beginning of year	32,433,000	18,961,000	21,654,000
Cash and cash equivalents at end of year	40,019,000	32,433,000	18,961,000
Supplemental cash flow disclosure
Interest	27,724,000	18,097,000	11,914,000
Income taxes, net	1,876,000	4,877,000	361,000
Non-cash investing and financing activities:
Adjustment to reflect redemption value of convertible preferred stock	96,258,000	15,900,000	7,007,000
Term loan amendment fees paid-in-kind	5,815,000	0	0
Accrued term loan amendment fee	2,809,000	0	0
Accrued additions to property, plant and equipment	317,000	961,000	993,000
Issuance of restricted stock	6,000	0	9,000
Accrued remittance of employees' statutory tax withholdings for fully-vested share units	3,000	424,000	1,204,000
Cash dividends declared on common stock but unpaid, including (reversal) accrual of dividend equivalents	(42,000)	(107,000)	315,000
Accrued deferred financing costs	0	1,114,000	0
Accrued shelf registration costs	0	170,000	0
Unpaid convertible preferred stock issuance costs	0	77,000	0
Shelf Registration
Cash flows from financing activities:
Payment of shelf registration costs	(207,000)	(20,000)	(101,000)
CGC
Cash flows from investing activities:
Proceeds from business divestiture, net	$ 0	$ 33,225,000	$ 0