Name:	us-gaap_WarrantsAndRightsNoteDisclosureAbstract
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Data Type:	xbrli:stringItemType
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Redemption price per share or per unit of warrants or rights outstanding.

No definition available.

Name:	wald_ClassOfWarrantOrRightRedemptionPriceOfWarrantsOrRights
Namespace Prefix:	wald_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

Period to provide written notice to redeem warrants, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_NoticePeriodToRedeemWarrants
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
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Number of trading days for common stock price to exceed threshold, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_NumberOfTradingDays
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Percentage of the aggregate gross proceeds from such issuances represent the total equity proceeds, and interest thereon, available for the funding of a Business Combination on the date of the completion of a Business Combination (net of redemptions).

No definition available.

Name:	wald_PercentageOfAggregateGrossProceedsOfIssuanceAvailableForFundingOfBusinessCombination
Namespace Prefix:	wald_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

Percentage of the exercise price of the public warrants will be adjusted (to the nearest cent) to be equal to or higher of the market value and the newly issued price.

No definition available.

Name:	wald_PercentageOfExercisePriceOfPublicWarrantsIsAdjustedHigherThanTheMarketValueOfNewlyIssuedPrice
Namespace Prefix:	wald_
Data Type:	dtr-types:percentItemType
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Period Type:	duration

Percentage of redemption trigger price will be adjusted (to the nearest cent) to be equal to or higher than the market value and the newly issued price.

No definition available.

Name:	wald_PercentageOfRedemptionTriggeredPriceIsAdjustedHigherThanTheMarketValueOfNewlyIssuedPrice
Namespace Prefix:	wald_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

Period of time required to pass after the filing of a registration statement to become effective before warrant holders may be permitted to exercise warrants, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_PeriodForRegistrationStatementToBecomeEffective
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Period of time required before warrants become exercisable after the completion of a Business Combination, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_PeriodRequiredForWarrantsToBecomeExercisable
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Period for warrants to exercise after the completion of public offering, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_PeriodToExerciseWarrantsAfterPublicOfferings
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Period the entity is required to file a registration statement following the closing of a Business Combination, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_PeriodToFileRegistrationStatement
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Threshold period of specified trading days that common stock price exceeds threshold price per share, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	wald_TradingDaysThreshold
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Warrant expiration term.

No definition available.

Name:	wald_WarrantExpirationTerm
Namespace Prefix:	wald_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_SubsidiarySaleOfStockAxis=wald_SecondOfferingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis=wald_WarrantsAndRightsSubjectToMandatoryRedemptionOneMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_ScheduleOfSharesSubjectToMandatoryRedemptionBySettlementTermsAxis=wald_WarrantsAndRightsSubjectToMandatoryRedemptionTwoMember
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