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Acquisition - Additional Information (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
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Nov. 01, 2019 | Apr. 30, 2021 | Apr. 30, 2020
Business Acquisition [Line Items] |  |  |
Cash paid for acquisitions, net of cash acquired |  |  | $ 108,602
Increase in goodwill result of additional tax liabilities |  | $ 2,600 |
Acquired Companies |  |  |
Business Acquisition [Line Items] |  |  |
Cash paid for acquisitions, net of cash acquired | $ 108,600 |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585 + Details
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