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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
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Name:	us-gaap_LongtermDebtTypeAxis=wch_AblCreditFacilityMember
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Name:	us-gaap_LongtermDebtTypeAxis=wch_InternationalTradeFinanceLinesMember
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Name:	us-gaap_LongtermDebtTypeAxis=wch_InternationalNotesPayableMember
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