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COMMITMENTS AND CONTINGENCIES, Registration Rights and Warrant Amendments (Details) - CIK 0001846136 Riverview Acquisition Corp - item | Jun. 30, 2022 | Dec. 31, 2021
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Registration, Warrant Amendments and Shareholder Rights Agreement [Abstract] |  |
Number of demands entitled to holders | 3 | 3
Minimum percentage of outstanding warrant holders required to approve amendment | 65.00% | 65.00%

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- Definition Minimum percentage for outstanding share holders required to amend the term of public warrants. + References No definition available. + Details
Name: | wch_MinimumPercentageOfOutstandingWarrantHoldersRequiredToApproveAmendment
Namespace Prefix: | wch_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Represents the number of demands eligible security holder can make. + References No definition available. + Details
Name: | wch_NumberOfDemandsEligibleSecurityHolderCanMake
Namespace Prefix: | wch_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | dei_LegalEntityAxis=wch_Cik0001846136RiverviewAcquisitionCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |