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v3.22.1

Condensed Statements of Changes in Shareholders' Deficit (Unaudited) (Parentheticals) (Q1) | 3 Months Ended
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Mar. 31, 2021 shares
Statement of Stockholders' Equity [Abstract] |
Sale of private placement warrants | 5,933,333

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Sale of units. + References No definition available. + Details
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Namespace Prefix: | wald_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration