Annual report pursuant to Section 13 and 15(d) 12-31-2014

Equity - Schedule of Shares of Common Stock for Future Issuance (Details)

v2.4.1.9
Equity - Schedule of Shares of Common Stock for Future Issuance (Details)
Dec. 31, 2014
Dec. 31, 2013
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
Series D Convertible Preferred Stock    
Class Of Stock [Line Items]    
Shares outstanding   12,786us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance
/ us-gaap_StatementClassOfStockAxis
= amda_SeriesDConvertiblePreferredStockMember
Series E Convertible Preferred Stock    
Class Of Stock [Line Items]    
Shares outstanding   27,224us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance
/ us-gaap_StatementClassOfStockAxis
= amda_SeriesEConvertiblePreferredStockMember
Series F Convertible Preferred Stock    
Class Of Stock [Line Items]    
Shares outstanding   10,475us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance
/ us-gaap_StatementClassOfStockAxis
= amda_SeriesFConvertiblePreferredStockMember
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
Convertible Note    
Class Of Stock [Line Items]    
Warrants outstanding 8,772,111us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
/ us-gaap_DebtInstrumentAxis
= amda_MagnaConvertibleNotesMember