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Net Loss Per Common Share (Details 1)
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3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
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Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2013
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Sep. 30, 2012
|
|
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Options to purchase common stock [Member]
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| Securities excluded from the computation of diluted net income (loss) per share | ||||
| Shares issuable excluded from computation of diluted net loss per share | 4,493,065 | 1,889,839 | 4,493,065 | 4,670,705 |
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Unvested restricted stock awards [Member]
|
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| Securities excluded from the computation of diluted net income (loss) per share | ||||
| Shares issuable excluded from computation of diluted net loss per share | 10,805,000 | 2,545,773 | 10,805,000 | 5,150,000 |
|
Common stock warrants [Member]
|
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| Securities excluded from the computation of diluted net income (loss) per share | ||||
| Shares issuable excluded from computation of diluted net loss per share | 2,342,500 | 2,342,500 | 2,342,500 | 2,342,500 |