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Debt - Outstanding Long-Term Debt (Details) (USD $)
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Mar. 31, 2015
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Dec. 31, 2014
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Jun. 30, 2014
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| Debt Instrument [Line Items] | |||
| Total debt, outstanding principal | $ 24,298,000us-gaap_DebtInstrumentFaceAmount | $ 24,500,000us-gaap_DebtInstrumentFaceAmount | |
| Less: current portion, outstanding principal | (20,000,000)amda_DebtInstrumentFaceAmountCurrent | (20,000,000)amda_DebtInstrumentFaceAmountCurrent | |
| Long-term debt, outstanding principal | 4,298,000amda_DebtInstrumentFaceAmountNoncurrent | 4,500,000amda_DebtInstrumentFaceAmountNoncurrent | |
| Total debt, unamortized discount | (2,031,000)us-gaap_DebtInstrumentUnamortizedDiscount | (2,369,000)us-gaap_DebtInstrumentUnamortizedDiscount | |
| Less: current portion, unamortized discount | 843,000amda_DebtInstrumentUnamortizedDiscountCurrent | 930,000amda_DebtInstrumentUnamortizedDiscountCurrent | |
| Long-term debt, unamortized discount | (1,188,000)amda_DebtInstrumentUnamortizedDiscountNoncurrent | (1,439,000)amda_DebtInstrumentUnamortizedDiscountNoncurrent | |
| Total debt, net carrying amount | 22,267,000us-gaap_LongTermDebt | 22,131,000us-gaap_LongTermDebt | |
| Less: current portion, net carrying amount | (19,157,000)us-gaap_LongTermDebtCurrent | (19,070,000)us-gaap_LongTermDebtCurrent | |
| Long-term debt | 3,110,000us-gaap_LongTermDebtNoncurrent | 3,061,000us-gaap_LongTermDebtNoncurrent | |
| Hercules Term Loan | |||
| Debt Instrument [Line Items] | |||
| Total debt, outstanding principal |
20,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
20,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
20,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
| Total debt, unamortized discount |
(843,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
(930,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
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| Total debt, net carrying amount |
19,157,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
19,070,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
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| Convertible Note | |||
| Debt Instrument [Line Items] | |||
| Total debt, outstanding principal |
4,298,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
4,500,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
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| Total debt, unamortized discount |
(1,188,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
(1,439,000)us-gaap_DebtInstrumentUnamortizedDiscount / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
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| Total debt, net carrying amount |
$ 3,110,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
$ 3,061,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = amda_MagnaConvertibleNotesMember |
| X | ||||||||||
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- Definition
Current face (par) amount of debt instrument at balance sheet date. No definition available.
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- Definition
Noncurrent face (par) amount of debt instrument at balance sheet date. No definition available.
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- Definition
The current portion of the amount of debt discount originally recognized at issuance of the instrument that has yet to be amortized. No definition available.
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- Definition
The noncurrent portion of the amount of debt discount originally recognized at issuance of the instrument that has yet to be amortized. No definition available.
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- Definition
Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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