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Stock-Based Compensation (Details 3) (Warrant [Member], USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Warrant [Member]
Summary of all stock option plans / warrant activity
Number of Options/Warrants Outstanding, Beginning Balance	4,704,636
Warrants, Issued
Warrants, Expired/forfeited
Number of Options/Warrants Outstanding, Exercised	(1,046,211)
Number of Options/Warrants Outstanding, Ending Balance	3,658,425	4,704,636
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 1.61
Weighted Average Exercise Price, Issued
Weighted Average Exercise Price, Expired/forfeited
Weighted Average Exercise Price, Exercised	$ 1.35
Weighted Average Exercise Price, Outstanding, Ending Balance	$ 1.69	$ 1.61
Weighted Average Remaining Contractual Life, Outstanding and exercisable	11 months 1 day	1 year 4 months 28 days
Weighted Average Remaining Contractual Life, Issued
Weighted Average Remaining Contractual Life, Expired/forfeited
Weighted Average Remaining Contractual Life, Exercised

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- Definition

Share based compensation weighted average remaining contractual life expired forfeited.

+ References

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Share based compensation weighted average remaining contractual life issued.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Weighted average price of options that were either forfeited or expired.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(3)-(4)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

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Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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-Paragraph 2

-Subparagraph (e)(1)

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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