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

Debt and Line of Credit - Future Principal Payments on Debt (Details)

v2.4.1.9
Debt and Line of Credit - Future Principal Payments on Debt (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Line Of Credit Facility [Line Items]    
Total future principal payments $ 22,131us-gaap_LongTermDebt $ 17,925us-gaap_LongTermDebt
Hercules Term Loan    
Line Of Credit Facility [Line Items]    
Total future principal payments 19,070us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
 
Magna Convertible Notes    
Line Of Credit Facility [Line Items]    
Total future principal payments 3,061us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= amda_MagnaConvertibleNotesMember
 
Convertible Notes Payable    
Line Of Credit Facility [Line Items]    
2015 2,949us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2016 12,166us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2017 8,567us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2018 818us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
Total future principal payments 24,500us-gaap_LongTermDebt
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
Convertible Notes Payable | Hercules Term Loan    
Line Of Credit Facility [Line Items]    
2015 2,949us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2016 7,666us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2017 8,567us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
2018 818us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
Total future principal payments 20,000us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= amda_HerculesTermLoanMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
Convertible Notes Payable | Magna Convertible Notes    
Line Of Credit Facility [Line Items]    
2016 4,500us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
/ us-gaap_DebtInstrumentAxis
= amda_MagnaConvertibleNotesMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember
 
Total future principal payments $ 4,500us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= amda_MagnaConvertibleNotesMember
/ us-gaap_ShortTermDebtTypeAxis
= us-gaap_ConvertibleNotesPayableMember