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Condensed Statement of Cash Flows (Unaudited) (Q3) | 9 Months Ended
--- | ---
Sep. 30, 2021 USD ($)
Cash Flows from Operating Activities: |
Net income | $ 5,021,944
Adjustments to reconcile net income to net cash used in operating activities: |
Interest earned on Trust Account | (30,985)
Change in fair value of warrant liabilities | (4,009,667)
Change in fair value of forward purchase agreement liabilities | (2,664,000)
Offering costs allocated to warrants | 719,201
Changes in current assets and current liabilities: |
Prepaid assets | (336,542)
Accounts payable | 66,739
Due to related party | 65,000
Net cash used in operating activities | (1,168,310)
Cash Flows from Investing Activities: |
Investment of cash into Trust Account | (345,000,000)
Net cash used in investing activities | (345,000,000)
Cash Flows from Financing Activities: |
Proceeds from issuance of Founder Shares | 25,000
Proceeds from Initial Public Offering, net of underwriters' discount | 338,100,000
Proceeds from issuance of Private Placement Warrants | 8,900,000
Payments of offering costs | (521,631)
Net cash provided by financing activities | 346,503,369
Net Change in Cash | 335,058
Cash - Beginning of period | 0
Cash - End of period | 335,058
Supplemental Disclosure of Non-cash Financing Activities: |
Initial value of Class A ordinary shares subject to possible redemption | 345,000,000
Accretion of Class A ordinary shares to redemption value | 31,410,398
Initial value of warrant liabilities | 18,190,000
Deferred underwriters' discount payable charged to additional paid-in capital | 12,075,000
Initial value of forward purchase agreement liabilities | $ 11,655,000

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Offering costs allocated to warrants. + References No definition available. + Details
Name: | wald_OfferingCostsAllocatedToWarrants
Namespace Prefix: | wald_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from issuance of Founders Shares. + References No definition available. + Details
Name: | wald_ProceedsFromIssuanceOfFoundersShares
Namespace Prefix: | wald_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration