|
Stock-Based Compensation (Details 1) (USD $)
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Weighted average grant date fair value |
$ 1.69 |
|
|
|
Stock Option [Member]
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|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Options, Beginning Balance |
4,453,746 |
2,979,010 |
|
| Options, Granted |
222,500 |
2,075,000 |
|
| Options, Exercised |
(291,666) |
(374,851) |
|
| Options, Forfeited |
(475,000) |
(225,413) |
|
| Options, Ending Balance |
3,909,580 |
4,453,746 |
2,979,010 |
| Options, Exercisable |
3,153,537 |
|
|
| Weighted Average Exercise Price, Beginning Balance |
$ 1.78 |
$ 1.34 |
|
| Weighted Average Exercise Price, Granted |
$ 1.69 |
$ 2.21 |
|
| Weighted Average Exercise Price, Exercised |
$ 0.79 |
$ 0.34 |
|
| Weighted Average Exercise Price, Forfeited |
$ 2.30 |
$ 2.37 |
|
| Weighted Average Exercise Price, Ending Balance |
$ 1.78 |
$ 1.78 |
$ 1.34 |
| Weighted Average Exercise Price, Exercisable |
$ 1.69 |
|
|
| Weighted Average Remaining Contractual Life, Balance Outstanding |
5 years 7 months 2 days |
6 years 5 months 5 days |
6 years 4 days |
| Weighted Average Remaining Contractual Life, Exercisable |
5 years 2 months 26 days |
|
|
| Aggregate Intrinsic Value, Beginning Balance |
$ 1,308,000 |
$ 0 |
|
| Aggregate Intrinsic Value, Exercised |
71,000 |
661,000 |
|
| Aggregate Intrinsic Value, Ending Balance |
785,000 |
1,308,000 |
0 |
| Aggregate Intrinsic Value, Exercisable |
773,000 |
|
|
| Grant date fair value of options granted |
$ 350,000 |
$ 4,468,000 |
|
| Weighted average grant date fair value |
$ 1.57 |
$ 2.15 |
|