XML 91 R57.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Commitments & Contingencies (Q3) (Details) - USD ($) |  | 1 Months Ended
--- | --- | ---
Mar. 18, 2021 | Dec. 31, 2020
Underwriting Agreement [Abstract] |  |
Underwriting discount (in dollars per share) |  | $ 0.20
Underwriting discount |  | $ 5,000,000
IPO [Member] |  |
Underwriting Agreement [Abstract] |  |
Underwriting discount (in dollars per share) | $ 0.20 |
Underwriting discount | $ 6,900,000 |
Deferred underwriting discount (in dollars per share) | $ 0.35 |
Deferred underwriting discount | $ 12,075,000 |

X
- Definition Carrying value as of the balance sheet date of outstanding underwriting discount payable initially due after one year or beyond the operating cycle if longer, excluding current portion. + References No definition available. + Details
Name: | wald_DeferredUnderwritingDiscount
Namespace Prefix: | wald_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Deferred underwriting discount per unit payable to underwriters if the Company completes a Business Combination, subject to terms of the underwriting agreement. + References No definition available. + Details
Name: | wald_DeferredUnderwritingDiscountPerUnit
Namespace Prefix: | wald_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | wald_UnderwritingAgreementAbstract
Namespace Prefix: | wald_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate underwriting discount fee paid to the underwriters upon the closing of the Initial Public Offering. + References No definition available. + Details
Name: | wald_UnderwritingDiscount
Namespace Prefix: | wald_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Underwriting discount fee per unit paid to underwriters. + References No definition available. + Details
Name: | wald_UnderwritingDiscountFee
Namespace Prefix: | wald_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |