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Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ 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

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

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- Definition

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+ References

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

+ References

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Capital Stock (Black Scholes model to determine the fair value of the warrants) (Detail)	1 Months Ended
	Dec. 23, 2014	Dec. 31, 2014	Sep. 08, 2014	Aug. 09, 2013	Jun. 30, 2013	May 17, 2013
Venture Loan [Member]
Stockholders Equity [Line Items]
Risk-free interest rate	2.17%
Expected life	10 years
Expected volatility	121.60%
Dividend Yield	0.00%
Warrants 2014 [Member]
Stockholders Equity [Line Items]
Risk-free interest rate	1.98%
Expected life	7 years
Expected volatility	138.40%
Dividend Yield	0.00%
Investor [Member]
Stockholders Equity [Line Items]
Risk-free interest rate		2.47%	2.48%
Expected life		9 years 8 months 12 days	10 years
Expected volatility		124.90%	119.40%
Dividend Yield		0.00%	0.00%
Placement Agent Warrants [Member]
Stockholders Equity [Line Items]
Risk-free interest rate				2.53%	1.58%	1.35%
Expected life				4 years	4 years	4 years
Expected volatility				146.19%	145.62%	144.63%
Dividend Yield				0.00%	0.00%	0.00%