Accrued Expenses and Other Current Liabilities (Narrative) (Details) - USD ($)	3 Months Ended
	Oct. 31, 2021	Jul. 31, 2021
Payables and Accruals [Abstract]
Minimum coverage period of product warranty from the date of shipment	1 year
Accrued Expenses And Other Current Liabilities [Line Items]
Accrued acquisition-related costs	$ 8,969,000	$ 9,222,000
UHP
Accrued Expenses And Other Current Liabilities [Line Items]
Accrued acquisition-related costs	$ 8,830,000	$ 8,705,000