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Long-term Debt (Details) - USD ($) $ / shares in Units, $ in Millions	May. 08, 2013	Mar. 18, 2015
Debt Instrument [Line Items]
Term for interest only payments	12 months
Interest payments at the fixed coupon rate	8.45%
Term for principal and interest payments	30 months
Cash facility fee percentage	1.00%
Cash final payment percentage	5.50%
Warrant term	7 years
Number of shares availabe from warrants		1,826,923
Exercise price (usd per share)	$ 2.47	$ 2.08
Duration of average market price used for warrant exercise price	20 days
Maximum [Member]
Debt Instrument [Line Items]
Number of shares availabe from warrants	182,186
First Tranche [Member]
Debt Instrument [Line Items]
Loan, amount	$ 10

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Exercise price per share or per unit of warrants or rights outstanding.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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