v2.4.1.9

Stock Based Awards (Details 1)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Risk-free interest rate		1.11%us-gaap_FairValueAssumptionsRiskFreeInterestRate
Expected dividend yield		0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
Expected volatility	108.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate	108.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
Expected term (in years)	6 years 29 days	6 years 29 days
Minimum [Member]
Risk-free interest rate	0.25%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected volatility	79.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate / us-gaap_RangeAxis = us-gaap_MinimumMember
Expected term (in years)	1 year 1 month 28 days
Maximum [Member]
Risk-free interest rate	2.11%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected volatility	103.00%us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate / us-gaap_RangeAxis = us-gaap_MaximumMember
Expected term (in years)	9 years 18 days
2007 Equity Incentive Plan [Member] | Minimum [Member]
Risk-free interest rate	1.08%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_PlanNameAxis = us-gaap_StockCompensationPlanMember / us-gaap_RangeAxis = us-gaap_MinimumMember
2007 Equity Incentive Plan [Member] | Maximum [Member]
Risk-free interest rate	2.51%us-gaap_FairValueAssumptionsRiskFreeInterestRate / us-gaap_PlanNameAxis = us-gaap_StockCompensationPlanMember / us-gaap_RangeAxis = us-gaap_MaximumMember

X

- Definition

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=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsExpectedDividendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsExpectedTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ 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=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average expected volatility of stock 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=25499696&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsWeightedAverageVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PlanNameAxis=us-gaap_StockCompensationPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: