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Organization and Summary of Significant Accounting Policies - Additional Information (Details) (USD $)
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0 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | ||
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Feb. 11, 2014
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Jan. 31, 2013
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Dec. 31, 2014
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Dec. 31, 2013
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Feb. 12, 2014
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Nov. 26, 2014
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| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Net loss | $ (32,582,000)us-gaap_NetIncomeLoss | $ (8,286,000)us-gaap_NetIncomeLoss | ||||
| Cash used in operations | (14,522,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (9,949,000)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | ||||
| Accumulated deficit | (172,505,000)us-gaap_RetainedEarningsAccumulatedDeficit | (139,923,000)us-gaap_RetainedEarningsAccumulatedDeficit | ||||
| Debt instrument, payment terms | As discussed further in Note 7, the Company refinanced its long-term debt and entered into a term loan with Hercules Technology Growth Capital, Inc. (“Hercules Technology”), as administrative and collateral agent for the lenders thereunder and as lender, and Hercules Technology III, LP, as lender (the “Hercules Term Loan”). The Hercules Term Loan has a liquidity covenant that requires the Company to maintain a cash balance in excess of $9.0 million | |||||
| Cash | 18,200,000us-gaap_Cash | |||||
| Stock issued during period, shares, reverse stock splits | 0.0388us-gaap_StockholdersEquityNoteStockSplitConversionRatio1 | |||||
| Common stock shares, issued | 50,583us-gaap_StockIssuedDuringPeriodSharesNewIssues | |||||
| Proceeds from issuance of common stock, net of issuance costs | 15,369,000us-gaap_ProceedsFromIssuanceOfCommonStock | |||||
| Allowance for bad debts | 54,000us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts | 49,000us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts | ||||
| Bad debt expense | 65,000us-gaap_ProvisionForDoubtfulAccounts | 5,000us-gaap_ProvisionForDoubtfulAccounts | ||||
| Percentage of excise tax included in cost of revenue | 2.30%amda_PercentageOfExciseTaxIncludedInCostOfRevenue | |||||
| Estimated useful lives | 5 years | |||||
| Impairment loss for property and equipment | 0us-gaap_PropertyPlantAndEquipmentDisposals | 0us-gaap_PropertyPlantAndEquipmentDisposals | ||||
| Impairment loss for finite-lived intangible assets | 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived | 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived | ||||
| Goodwill impairment | 0us-gaap_GoodwillImpairmentLoss | 0us-gaap_GoodwillImpairmentLoss | ||||
| Impairment loss for indefinite-lived intangible assets | 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill | 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill | ||||
| Advertising expense | 149,000us-gaap_AdvertisingExpense | 403,000us-gaap_AdvertisingExpense | ||||
| Interest or penalties | 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense | 0us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense | ||||
| Deferred offering costs | 2,763,000us-gaap_DeferredOfferingCosts | |||||
| Minimum | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Estimated useful lives | 3 years | |||||
| Maximum | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Estimated useful lives | 5 years | |||||
| Accounts Receivable | Customer Concentration Risk | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Concentration risk percentage |
10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
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| Number of customers |
0amda_NumberOfConcentrationCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
1amda_NumberOfConcentrationCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
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| Sales Revenue, Net | Customer Concentration Risk | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Concentration risk percentage |
28.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
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| Number of customers |
2amda_NumberOfConcentrationCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
1amda_NumberOfConcentrationCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember |
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| IPO | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Common stock shares, issued |
3,682,900us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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| Preferred stock, par value |
$ 5.75us-gaap_EquityIssuancePerShareAmount / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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| Proceeds from issuance of common stock, net of issuance costs |
15,400,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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| Underwriting discounts and other offering costs |
5,800,000us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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| IPO | Underwriter Option | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Common stock shares, issued |
182,900us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_CounterpartyNameAxis = amda_UnderwriterOptionMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember |
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| Secondary Offering | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Common stock shares, issued |
11,441,646us-gaap_StockIssuedDuringPeriodSharesNewIssues / us-gaap_SubsidiarySaleOfStockAxis = amda_SecondaryOfferingMember |
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| Proceeds from issuance of common stock, net of issuance costs |
11,300,000us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_SubsidiarySaleOfStockAxis = amda_SecondaryOfferingMember |
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| Underwriting discounts and other offering costs |
1,700,000us-gaap_ExpenseRelatedToDistributionOrServicingAndUnderwritingFees / us-gaap_SubsidiarySaleOfStockAxis = amda_SecondaryOfferingMember |
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| Common stock share issue price under secondary offering, per share price |
$ 1.14us-gaap_SaleOfStockPricePerShare / us-gaap_SubsidiarySaleOfStockAxis = amda_SecondaryOfferingMember |
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| Sale of stock, description of transaction | The Company completed a secondary offering, in which the Company sold and issued 11,441,646 units. Each unit was issued at a price of $1.14 and consisted of one share of common stock and one common stock warrant | |||||
| Hercules Term Loan | ||||||
| Organization And Summary Of Significant Accounting Policies [Line Items] | ||||||
| Cash and cash equivalents |
$ 9,000,000amda_TermLoanCashMinimumCovenant / us-gaap_DebtInstrumentAxis = amda_HerculesTermLoanMember |
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Number of concentration customers. No definition available.
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Percentage of excise tax included in cost of revenue. No definition available.
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The amount of cash necessary for term loan covenant. No definition available.
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- Definition
Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount per share or per unit assigned to the consideration received of equity securities issued for development stage entities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expense related to distribution, servicing and underwriting fees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Disclose whether operations for the current or prior years generated sufficient cash to cover current obligations, whether waivers were obtained from creditors relating to the company's default under the provisions of debt agreements and possible effects of such conditions and events, such as: whether there is a possible need to obtain additional financing (debt or equity) or to liquidate certain holdings to offset future cash flow deficiencies. No definition available.
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- Definition
Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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- Definition
Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Description of consideration received by the subsidiary or equity investee in exchange for shares of stock issued or sold. No definition available.
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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction. No definition available.
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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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