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Business Segment Information (Operating Segment Information) - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 0 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Jul. 01, 2014
Segment Reporting Information [Line Items]        
Gain on sale of the AGI In-Store business $ 35,004us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal      
Non-cash loss on disposal of fixed assets 15,983us-gaap_GainLossOnSaleOfPropertyPlantEquipment 560us-gaap_GainLossOnSaleOfPropertyPlantEquipment 631us-gaap_GainLossOnSaleOfPropertyPlantEquipment  
WHQ Location [Member]        
Segment Reporting Information [Line Items]        
Non-cash loss on disposal of fixed assets 15,544us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= am_WorldHeadQuartersLocationMember
    15,544us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= am_WorldHeadQuartersLocationMember
Unallocated [Member] | WHQ Location [Member]        
Segment Reporting Information [Line Items]        
Non-cash loss on disposal of fixed assets 2,183us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= am_WorldHeadQuartersLocationMember
     
Unallocated [Member] | AGI In-Store [Member]        
Segment Reporting Information [Line Items]        
Gain on sale of the AGI In-Store business 35,004us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ dei_LegalEntityAxis
= am_AgIndustriesIncMember
     
Unallocated [Member] | Clinton Cards [Member]        
Segment Reporting Information [Line Items]        
Impairment of intangible assets 21,924us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_ConsolidationItemsAxis
= us-gaap_MaterialReconcilingItemsMember
/ dei_LegalEntityAxis
= am_ClintonCardsMember
     
North American Social Expression Products [Member] | WHQ Location [Member]        
Segment Reporting Information [Line Items]        
Non-cash loss on disposal of fixed assets $ 13,361us-gaap_GainLossOnSaleOfPropertyPlantEquipment
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= am_WorldHeadQuartersLocationMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NorthAmericanSocialExpressionProductsMember