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Leases, Commitments and Contingencies - Additional Information (Detail) - USD ($) | 12 Months Ended
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Apr. 30, 2023 | Apr. 30, 2022
Commitments and Contingencies Disclosure [Abstract] |  |
ROU assets | $ 9,170,000 | $ 7,573,000
Operating lease payments | $ 2,278,640 | 2,019,000
Remaining lease term (in years) | 8 years |
Option to extend, term (in years) | 5 years |
Option to terminate, term (in years) | 1 year |
Operating lease expense | $ 3,344,000 | 3,067,000
Operating lease, short term, expense | $ 1,065,000 | $ 1,048,000
Operating lease, weighted average remaining lease term (in years) | 5 years 1 month 6 days | 5 years 9 months 18 days
Operating lease, weighted average discount rate (as a percent) | 5.00% | 4.10%
Finance lease, weighted average remaining lease term (in years) | 3 years 1 month 6 days | 3 years 9 months 18 days
Finance lease, weighted average discount rate (as a percent) | 6.80% | 6.60%

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- Definition Lessee, Remaining Lease Term + References No definition available. + Details
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- Definition Operating Lease, Short Term, Expense + References No definition available. + Details
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- Definition Weighted average discount rate for finance lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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