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Revenue - Contract Estimates (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Revenue
Accrued sales incentives	$ 1.9	$ 1.5
Other accrued deductions	$ 2.7	$ 2.7

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- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- Definition

Carrying value as of the balance sheet date of accrued other revenue deductions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales incentives. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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No definition available.

+ Details

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Namespace Prefix:	wch_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant