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Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2019
Accrued Liabilities, Current [Abstract]
Accrued wages and benefits	$ 26,367,000	$ 20,857,000
Accrued warranty obligations	17,600,000	15,200,000	$ 15,968,000
Accrued contract costs	12,750,000	15,306,000
Accrued acquisition-related costs	9,222,000	7,014,000
Accrued commissions and royalties	5,342,000	4,621,000
Accrued legal costs	2,854,000	2,539,000
Other	15,466,000	19,624,000
Accrued expenses and other current liabilities	$ 89,601,000	$ 85,161,000

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- Definition

Accrued Acquisition-Related Costs

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- Definition

Carrying value as of the balance sheet date of current obligations incurred through that date and payable for sales commissions and royalties.

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.20)
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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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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).

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