|
Summary of Significant Accounting Policies (Details 2) (USD $)
|
Jun. 30, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
Dec. 31, 2010
|
|---|---|---|---|---|
| Derivative liabilities (Level 2) | $ 2,369,032 | $ 0 | $ 7,061,238 | $ 622,944 |