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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)	Dec. 31, 2021 USD ($)
CIK 0001846136 Riverview Acquisition Corp
Federal depository insurance coverage	$ 250,000

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- Definition

The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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No definition available.

+ Details

Name:	us-gaap_CashFDICInsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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