STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Net revenues	$ 915us-gaap_SalesRevenueNet	$ 536us-gaap_SalesRevenueNet
Cost of revenue	4,935us-gaap_CostOfRevenue	4,341us-gaap_CostOfRevenue
Gross profit	(4,020)us-gaap_GrossProfit	(3,805)us-gaap_GrossProfit
Operating expenses:
Research and development	1,641us-gaap_ResearchAndDevelopmentExpense	3,782us-gaap_ResearchAndDevelopmentExpense
Selling, general and administrative	10,961	15,536
Impairment of long-lived assets	0	1,011
Total operating expenses	12,602us-gaap_OperatingExpenses	20,329us-gaap_OperatingExpenses
Operating loss	(16,622)us-gaap_OperatingIncomeLoss	(24,134)us-gaap_OperatingIncomeLoss
Other income (expenses):
Interest income	8us-gaap_InvestmentIncomeInterest	8us-gaap_InvestmentIncomeInterest
Interest expense	(2,380)us-gaap_InterestExpense	(564)us-gaap_InterestExpense
Change in fair value of warrant liability	8,103	(296)
Write-off of unamortized loan costs	0mela_WriteOffOfUnamortizedLoanCosts	(983)mela_WriteOffOfUnamortizedLoanCosts
Gain on sale of fixed assets	16us-gaap_GainLossOnDispositionOfAssets1	0us-gaap_GainLossOnDispositionOfAssets1
Registration rights liquidated damages	(3,420)	0
Other income, net	150us-gaap_OtherNonoperatingIncomeExpense	21us-gaap_OtherNonoperatingIncomeExpense
Nonoperating Income (Expense)	2,477us-gaap_NonoperatingIncomeExpense	(1,814)us-gaap_NonoperatingIncomeExpense
Net loss	(14,145)us-gaap_NetIncomeLoss	(25,948)us-gaap_NetIncomeLoss
Deemed dividend related to beneficial conversion feature on convertible preferred stock	(1,887)	0
Net loss attributable to common stockholders	$ (16,032)	$ (25,948)
Basic and diluted net loss per common share (in dollars per share)	$ (3.03)us-gaap_EarningsPerShareBasicAndDiluted	$ (6.05)us-gaap_EarningsPerShareBasicAndDiluted
Basic and diluted weighted average number of common shares outstanding (in shares)	5,295,929	4,289,450

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