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Organization and Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019
Intangibles, net
Impairment recorded	$ 0	$ 0	$ 0
Technology
Intangibles, net
Weighted average amortization period	12 years
Licenses
Intangibles, net
Weighted average amortization period	3 years
In-process research and development
Intangibles, net
Weighted average amortization period	3 years
Trademarks and tradenames
Intangibles, net
Weighted average amortization period	6 years
Minimum | Technology
Intangibles, net
Weighted average amortization period	3 years
Minimum | Customer relationships
Intangibles, net
Weighted average amortization period	3 years
Maximum | Customer relationships
Intangibles, net
Weighted average amortization period	5 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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Namespace Prefix:
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X

- Details

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Period Type:

X

- Details

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X

- Details

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X

- Details

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