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Sale of TPack A/S - Components of Gain (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Apr. 22, 2013
Apr. 30, 2014
Jun. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Gain on sale of TPack $ 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal $ 19,699us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal $ 0us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal      
TPack            
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]            
Total proceeds, net of working capital adjustment       30,175us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
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3,353us-gaap_ProceedsFromDivestitureOfInterestInConsolidatedSubsidiaries
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
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Net assets and liabilities       (184)amcc_NetAssetsandLiabilitiesofDisposalGroup
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Goodwill write off       1,758amcc_DisposalGroupIncludingDiscontinuedOperationsImpairmentofGoodwill
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Intangibles write off       11,404amcc_DisposalGroupIncludingDiscontinuedOperationsImpairmentofIntangibleAssets
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Holdback amount       3,353amcc_DivestitureofInterestinConsolidatedSubsidiariesConsiderationtobeDoistributedinNextTwelveMonths
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Legal fees and other costs       (483)amcc_DisposalGroupIncludingDiscontinuedOperationsLegalFeesandOtherCosts
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
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Gain on sale of TPack       $ 19,699us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
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  $ 19,700us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
/ us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis
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