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Other Income and Expense - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 0 Months Ended 3 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Jul. 01, 2014
May 30, 2014
Other Income And Expense [Line Items]          
Net gain on dispositions $ 35,004us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal        
Proceeds from sale of AGI In-Store 73,659us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets        
Clinton Cards secured debt recovery 3,390am_RecoveryImpairmentOfSecuredDebtAcquired 4,910am_RecoveryImpairmentOfSecuredDebtAcquired (8,106)am_RecoveryImpairmentOfSecuredDebtAcquired    
Non-cash loss on disposal of fixed assets 15,983us-gaap_GainLossOnSaleOfPropertyPlantEquipment 560us-gaap_GainLossOnSaleOfPropertyPlantEquipment 631us-gaap_GainLossOnSaleOfPropertyPlantEquipment    
Termination of certain agency agreements     2,125us-gaap_GainLossOnContractTermination    
Investment impairment charge   1,935us-gaap_ImpairmentOfInvestments      
Gain related to investment in third party   3,262us-gaap_GainLossOnInvestments 4,293us-gaap_GainLossOnInvestments    
International Social Expression Products [Member]          
Other Income And Expense [Line Items]          
Net gain on dispositions     1,432us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalSocialExpressionProductsMember
   
AG Interactive [Member]          
Other Income And Expense [Line Items]          
Net gain on dispositions     1,134us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_StatementBusinessSegmentsAxis
= am_AgInteractiveMember
   
WHQ Location [Member]          
Other Income And Expense [Line Items]          
Cash received from sale of property       13,535us-gaap_ProceedsFromSaleOfBuildings
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= am_WorldHeadQuartersLocationMember
 
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
 
Clinton Cards [Member]          
Other Income And Expense [Line Items]          
Clinton Cards secured debt recovery   (4,910)am_RecoveryImpairmentOfSecuredDebtAcquired
/ us-gaap_DebtInstrumentAxis
= am_ClintonCardsMember
8,106am_RecoveryImpairmentOfSecuredDebtAcquired
/ us-gaap_DebtInstrumentAxis
= am_ClintonCardsMember
  (3,390)am_RecoveryImpairmentOfSecuredDebtAcquired
/ us-gaap_DebtInstrumentAxis
= am_ClintonCardsMember
AGI In-Store [Member]          
Other Income And Expense [Line Items]          
Net gain on dispositions 35,004us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= am_AgIndustriesIncMember
       
Proceeds from sale of AGI In-Store $ 73,659us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
= am_AgIndustriesIncMember