|
Consolidated Balance Sheets (Parenthetical) (USD $)
|
Sep. 30, 2012
|
Dec. 31, 2011
|
|---|---|---|
| Preferred stock, par value | $ 0.001 | $ 0.001 |
| Preferred stock, shares authorized | 15,000,000 | 15,000,000 |
| Preferred stock, shares issued | 0 | 0 |
| Common stock, par value | $ 0.001 | $ 0.001 |
| Common stock, shares authorized | 50,000,000 | 50,000,000 |
| Common stock, shares issued | 16,682,186 | 16,474,988 |
| Common stock, shares outstanding | 16,682,186 | 16,474,988 |