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Fair Value Measurements - Reconciliation (Details) - Significant unobservable inputs (Level 3) $ in Thousands | 12 Months Ended
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Apr. 30, 2020 USD ($)
Reconciliation between beginning and ending balances of items measured at fair value on recurring basis |
Business acquisition | $ 1,703
Settlements | (2,500)
Cost of sales |
Reconciliation between beginning and ending balances of items measured at fair value on recurring basis |
Included in earnings | 1,147
SG&A |
Reconciliation between beginning and ending balances of items measured at fair value on recurring basis |
Included in earnings | (703)
Reseach and development |
Reconciliation between beginning and ending balances of items measured at fair value on recurring basis |
Included in earnings | $ 353

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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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