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Stock-Based Compensation (Narrative) (Details) | 3 Months Ended
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Jul. 31, 2022 shares
Employee Performance-Based RSUs |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Common stock issuable per RSU granted (shares) | 1
Employee Performance-Based RSUs | 2016 employee stock incentive plan |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Awarded in period (shares) | 119,772
Employee Service-Based RSUs [Member] | 2016 employee stock incentive plan |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Awarded in period (shares) | 64,528
Employee Performance-Based RSTUs |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Restricted stock units non vested grants (shares) | 11,945
Employee Service-Based RSTUs |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Restricted stock units non vested grants (shares) | 6,490
Cliff Vest | RSUs | 2016 employee stock incentive plan |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period, years | 3 years
Cliff Vest | RSTUs |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Vesting period, years | 3 years

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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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