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Stock Option Plan (Details) (Stock Options [Member], USD $) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Stock Options [Member] |  |  |  |
Summary of stock option activities |  |  |  |
Number of Units, Beginning balance | 2,330,134 | 273,859 | 273,859 |
Number of Units, Granted |  | 2,056,275 |  |
Number of Units, Ending Balance | 2,280,184 | 2,330,134 | 273,859 | 273,859
Weighted Average Exercise Price, Beginning balance | $ 0.96 | $ 1.29 | $ 1.29 |
Weighted Average Exercise Price, Granted |  | $ 0.96 |  |
Weighted Average Exercise Price, Ending Balance | $ 0.96 | $ 0.96 | $ 1.29 | $ 1.29
Weighted Average Remaining Contractual Term (in years), Outstanding | 8 years 5 months 1 day | 8 years 10 months 28 days | 5 years 6 months 4 days | 5 years 6 months 4 days
Weighted Average Remaining Contractual Term (in years), Granted |  | 8 years 10 months 21 days |  |
Aggregate Intrinsic Value, Beginning balance | $ 685,800 |  |  |
Aggregate Intrinsic Value, Granted |  |  |  |
Aggregate Intrinsic Value, Ending Balance | $ 1,609,035 | $ 685,800 |  |

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- Definition Weighted average remaining contractual term for option awards granted, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 Reference 2: 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)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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 + Details
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- Definition 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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