Equity - Schedule of Shares of Common Stock for Future Issuance (Details)
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Dec. 31, 2014
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Dec. 31, 2013
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Class Of Stock [Line Items] | ||
Shares outstanding | 3,884,788us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance | |
Warrants outstanding | 27,872,356us-gaap_CommonStockCapitalSharesReservedForFutureIssuance | 4,828,468us-gaap_CommonStockCapitalSharesReservedForFutureIssuance |
Series C Convertible Preferred Stock | ||
Class Of Stock [Line Items] | ||
Shares outstanding |
52,325us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_SeriesCConvertiblePreferredStockMember |
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Series D Convertible Preferred Stock | ||
Class Of Stock [Line Items] | ||
Shares outstanding |
12,786us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_SeriesDConvertiblePreferredStockMember |
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Series E Convertible Preferred Stock | ||
Class Of Stock [Line Items] | ||
Shares outstanding |
27,224us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_SeriesEConvertiblePreferredStockMember |
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Series F Convertible Preferred Stock | ||
Class Of Stock [Line Items] | ||
Shares outstanding |
10,475us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_SeriesFConvertiblePreferredStockMember |
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Common stock warrants | ||
Class Of Stock [Line Items] | ||
Warrants outstanding |
16,657,021us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_CommonStockWarrantsMember |
473,835us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_CommonStockWarrantsMember |
Common stock options | ||
Class Of Stock [Line Items] | ||
Warrants outstanding |
1,383,479us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_CommonStockOptionsMember |
106,544us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_CommonStockOptionsMember |
Restricted stock units | ||
Class Of Stock [Line Items] | ||
Warrants outstanding |
1,059,745us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = us-gaap_RestrictedStockMember |
168,832us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = us-gaap_RestrictedStockMember |
Shares available for grant under equity plans | ||
Class Of Stock [Line Items] | ||
Warrants outstanding |
91,659us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_StatementClassOfStockAxis = amda_AvailableForFutureGrantUnderEquityPlansMember |
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Convertible Note | ||
Class Of Stock [Line Items] | ||
Warrants outstanding |
8,772,111us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
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Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Aggregate number of nonredeemable preferred shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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