6. Share-based Compensation (Details 2) (USD $)	6 Months Ended
Jun. 30, 2013
Number of Shares
Outstanding at beginning of year, Shares	20,379,602
Granted, Shares
Exercised, Shares	(355,855)
Forfeited, Shares	(200,000)
Outstanding at June 30, 2013, Shares	19,823,747
Stock options exercisable at June 30, 2013	16,236,389
Wtd. Avg Exercise Price
Outstanding at beginning of year, Wtd. Avg. Shares Exercise Price	$ 0.09
Granted, Wtd. Avg. Shares Exercise Price
Exercised, Wtd. Avg. Shares Exercise Price	$ (0.08)
Forfeited, Wtd. Avg. Shares Exercise Price	$ (0.16)
Outstanding at June 30, 2013, Wtd. Avg. Shares Exercise Price	$ 0.09
Stock options exercisable at June 30, 2013, Wtd. Avg. Shares Exercise Price	$ 0.08

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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)(iii)

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

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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

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

+ 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)(i)

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

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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 price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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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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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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-Subparagraph (c)(1)(i)-(ii)

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

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Number of shares (or other type of equity) forfeited during the period.

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

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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