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

Fair Value Measurements and Marketable Securities - Financial Liabilities Measured at Fair Value on Recurring Basis by Level within Fair Value Hierarchy (Details)

v2.4.1.9
Fair Value Measurements and Marketable Securities - Financial Liabilities Measured at Fair Value on Recurring Basis by Level within Fair Value Hierarchy (Details) (Fair Value, Measurements, Recurring, Portion at Fair Value Measurement, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability $ 13,970us-gaap_DerivativeLiabilities $ 210us-gaap_DerivativeLiabilities
Conversion feature of note
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability 2,612us-gaap_DerivativeLiabilities
/ us-gaap_DebtInstrumentAxis
= amda_MagnaInitialConvertibleNotesMember
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Common Stock
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability 11,358us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
199us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
Preferred Stock
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability   11us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember
Level 3
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability 13,970us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
210us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Level 3 | Conversion feature of note
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability 2,612us-gaap_DerivativeLiabilities
/ us-gaap_DebtInstrumentAxis
= amda_MagnaInitialConvertibleNotesMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
 
Level 3 | Common Stock
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability 11,358us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
199us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
Level 3 | Preferred Stock
   
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Derivative liability   $ 11us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_PortionAtFairValueFairValueDisclosureMember
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_PreferredStockMember