Accrued Expenses and Other Current Liabilities (Product Warranty Rollforward) (Details) - USD ($)	12 Months Ended
Jul. 31, 2019	Jul. 31, 2018
Changes in Product Warranty Liability
Balance at beginning of year	$ 11,738,000	$ 17,617,000
Provision for warranty obligations	3,902,000	5,055,000
Additions (in connection with acquisitions)	6,431,000
Charges incurred	(6,151,000)	(8,244,000)
Warranty settlement and reclass	1,727,000	(2,690,000)
Balance at end of year	$ 15,968,000	$ 11,738,000

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of increase in the standard and extended product warranty accrual from a business acquisition.

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-Topic 460
-SubTopic 10
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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of increase (decrease) in the standard and extended product warranty accrual from changes in estimates attributable to preexisting product warranties.

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Amount of increase in the standard and extended product warranty accrual from warranties issued.

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