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Business Segment Information - Severance Charges by Segment (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
Feb. 28, 2013
Segment Reporting Information [Line Items]      
Severance charges $ 5,418us-gaap_SeveranceCosts1 $ 6,890us-gaap_SeveranceCosts1 $ 6,975us-gaap_SeveranceCosts1
North American Social Expression Products [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Severance charges 2,706us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NorthAmericanSocialExpressionProductsMember
3,020us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NorthAmericanSocialExpressionProductsMember
4,103us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NorthAmericanSocialExpressionProductsMember
International Social Expression Products [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Severance charges 2,420us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalSocialExpressionProductsMember
2,094us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalSocialExpressionProductsMember
2,136us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalSocialExpressionProductsMember
Retail Operations [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Severance charges 208us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalRetailOperationsMember
585us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalRetailOperationsMember
724us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_InternationalRetailOperationsMember
AG Interactive [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Severance charges 84us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_AgInteractiveMember
1,004us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_AgInteractiveMember
 
Severance charges     (1)am_SeveranceAccrualNetAdjustment
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_AgInteractiveMember
Non-Reportable Segment [Member] | Operating Segments [Member]      
Segment Reporting Information [Line Items]      
Severance charges   $ 187us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NonReportableSegmentsMember
$ 13us-gaap_SeveranceCosts1
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= am_NonReportableSegmentsMember