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Stock-Based Compensation, Performance-Based and Other Restricted Stock Activity (Details) - $ / shares shares in Thousands	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Restricted Stock [Member]
Restricted Stock [Abstract]
Awards granted (in shares)	494	433
Weighted average fair value of grant (in dollars per share)	$ 45.99	$ 57.36
Performance-based Stock Awards [Member]
Restricted Stock [Abstract]
Period for achievement of performance-based targets	3 years

X

- 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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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Balance Type:	na
Period Type:	duration

X

- Definition

The period of time during which certain financial performance-based targets must be achieved in order to trigger payment of performance-based restricted stock awards under the terms of the long-term incentive plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Period Type:	duration

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- References

No definition available.

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Namespace Prefix:	wly_
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Balance Type:	na
Period Type:	duration

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- Details

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Namespace Prefix:
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X

- Details

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