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Stock Plans, Share-Based Payments and Warrants (Details 2) (USD $)
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12 Months Ended | |
|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Shares, Outstanding at beginning of year | 2,294,714 | |
| Shares, Options granted | 237,315 | 1,547,550 |
| Shares, Options exercised | 0 | |
| Options forfeited or expired | (121,895) | |
| Shares, Outstanding at end of year | 2,410,134 | 2,294,714 |
| Shares, Exercisable at end of year | 1,385,199 | |
| Shares, Vested and expected to vest | 2,350,688 | |
| Weighted Average Exercise Price, Outstanding at beginning of year | $ 2.14 | |
| Weighted Average Exercise Price, Options granted | $ 0.64 | |
| Weighted Average Exercise Price, Options exercised | $ 0 | |
| Weighted Average Exercise Price, Options forfeited or expired | $ 3.27 | |
| Weighted Average Exercise Price, Outstanding at end of year | $ 1.28 | $ 2.14 |
| Weighted Average Exercise Price, Exercisable at end of year | $ 1.46 | |
| Weighted Average Exercise Price, Vested and expected to vest at end of year | $ 1.29 | |