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Derivatives and Hedging Activities - Additional Information (Detail) - USD ($) | 3 Months Ended
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Oct. 31, 2021 | Jul. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months | $ (73,000) | $ (770,000)
Derivative maturity | 18 months |

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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80748-113994 + Details
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Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration