Disposition - Carrying Amount of the Major Classes of Assets and Liabilities (Details) - USD ($)	Oct. 31, 2023	Jul. 31, 2023
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Total assets of disposal group held for sale	$ 44,894,000	$ 0
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Total liabilities of disposal group held for sale	10,557,000	$ 0
Disposal Group, Held-for-sale, Not Discontinued Operations | Solid-State RF Microwave High Power Amplifiers and Control Components Product Line
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Cash and cash equivalents	52,000
Accounts receivable, net	4,220,000
Inventories, net	17,671,000
Prepaid expenses and other current assets	161,000
Property, plant and equipment, net	2,789,000
Operating lease right-of-use assets, net	5,379,000
Goodwill	14,587,000
Other assets, net	35,000
Total assets of disposal group held for sale	44,894,000
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Accounts payable	3,160,000
Accrued expenses and other current liabilities	1,753,000
Operating lease liabilities, current	545,000
Contract liabilities	656,000
Operating lease liabilities, non-current	4,894,000
Deferred tax liability, net	(451,000)
Total liabilities of disposal group held for sale	$ 10,557,000