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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|---|---|---|
| Common stock, par value | $ 0.01 | $ 0.01 |
| Common stock, authorized | 150,000,000 | 100,000,000 |
| Common stock, issued | 84,502,653 | 81,889,226 |
| Common stock, outstanding | 84,502,653 | 81,889,226 |
|
Series A convertible preferred stock [Member]
|
||
| Preferred stock, par value | $ 0.01 | $ 0.01 |
| Preferred stock, authorized | 5,000,000 | 5,000,000 |
| Preferred stock, issued | 0 | 0 |
| Preferred stock, outstanding | 0 | 0 |