Accrued Expenses and Other Current Liabilities - Product Warranty Rollforward (Details) - USD ($)	9 Months Ended
Apr. 30, 2020	Apr. 30, 2019
Changes in Product Warranty Liability
Balance at beginning of period	$ 15,968,000	$ 11,738,000
Provision for warranty obligations	1,628,000	1,320,000
Additions (in connection with acquisitions)	1,000,000	6,431,000
Charges incurred	(3,394,000)	(4,828,000)
Warranty settlement and reclass	302,000	1,281,000
Balance at end of period	$ 15,504,000	$ 14,263,000

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 7
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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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

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