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Restructuring and Other Charges (Narrative) (Details)
Mar. 28, 2015
restructuring_plan
Restructuring Cost and Reserve [Line Items]  
Number of active restructuring plans (restructuring plan) 3cvo_NumberofActiveRestructuringPlans
National Envelope Acquisition [Member] | Acquisition Integration Plans [Member] | Envelope [Member]  
Restructuring Cost and Reserve [Line Items]  
Number of facilities closed (facility) 9cvo_RestructuringandRelatedCostNumberofFacilitiesClosed
/ us-gaap_BusinessAcquisitionAxis
= cvo_NationalEnvelopeAcquisitionMember
/ us-gaap_RestructuringPlanAxis
= cvo_AcquisitionIntegrationPlansMember
/ us-gaap_StatementBusinessSegmentsAxis
= cvo_EnvelopeMember
Number of new facilities (facility) 2cvo_RestructuringandRelatedCostNumberofNewFacilities
/ us-gaap_BusinessAcquisitionAxis
= cvo_NationalEnvelopeAcquisitionMember
/ us-gaap_RestructuringPlanAxis
= cvo_AcquisitionIntegrationPlansMember
/ us-gaap_StatementBusinessSegmentsAxis
= cvo_EnvelopeMember