Fair Value of Financial Instruments, Significant Unobservable input assumptions of Level 3 valuations (Details) - Level 3 [Member]	6 Months Ended	12 Months Ended
Jun. 30, 2015	Dec. 31, 2014
Significant Unobservable Input Assumptions of Level 3 Valuations [Abstract]
Historical volatility (in hundredths)	82.00%
Expected term (in years)	7 months 6 days
Risk-free interest rate (in hundredths)	0.16%
Minimum [Member]
Significant Unobservable Input Assumptions of Level 3 Valuations [Abstract]
Historical volatility (in hundredths)		55.00%
Expected term (in years)		1 month 6 days
Risk-free interest rate (in hundredths)		0.03%
Maximum [Member]
Significant Unobservable Input Assumptions of Level 3 Valuations [Abstract]
Historical volatility (in hundredths)		84.00%
Expected term (in years)		1 year 1 month 6 days
Risk-free interest rate (in hundredths)		0.31%

No definition available.

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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