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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Operating Loss Carryforwards [Line Items] |  |  |
Less valuation allowance | $ 250 | $ 250 |
Unrecognized tax benefits | 10,957 | 10,259 | $ 9,316
Unrecognized tax benefits that would impact effective tax rate | 8,656 |  |
Increase (decrease) in unrecognized tax benefits | 698 |  |
Accrued interest and penalties | 386 | 371 |
Increase in tax expense | 1 | $ 15 |
Decrease in unrecognized tax benefits is reasonable possible | 2,500 |  |
State |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Operating loss carryforwards | 94,897 |  |
Tax Credit Carryforward, Amount | $ 1,868 |  |

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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-3 + Details
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