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Note 1 - Basis of Presentation (Details Textual) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2020 USD ($) | Aug. 01, 2020 USD ($) | Oct. 31, 2021 USD ($) | Oct. 31, 2020 USD ($)
Number of Employees, Voluntary Retirement |  | 60 |  |
Voluntary Retirement Cost |  | $ 931 |  |
Number of Employees, Reduction in Force | 150 | 108 |  |
Severance Costs | $ 2,742 | $ 1,426 |  |
Government Wage Subsidy |  |  | $ 280 | $ 1,378
Payroll Tax, Employer, Deferral under the CARES Act |  |  | $ 5,122 |

X
- Definition Amount of government wage subsidy received during the period. + References No definition available. + Details
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X
- Definition The number of employees reduced in force during period. + References No definition available. + Details
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X
- Definition The amount of payroll tax deferred under the CARES Act. + References No definition available. + Details
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- Definition The amount of voluntary retirement cost. + References No definition available. + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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