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Stock-Based Compensation (Details 3) - Stock Option [Member] - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock Options, Non-vested - Beginning Balance | 2,087,910 | 756,043 | 1,561,869
Stock Options, Granted | 3,781,666 | 2,382,500 | 222,500
Stock Options, Vested/Exercised | (1,382,898) | (1,050,633) | (883,882)
Stock Options, Forfeited/Cancelled | (302,502) |  | (144,444)
Stock Options, Non-vested - Ending Balance | 4,184,176 | 2,087,910 | 756,043
Weighted Average Grant Date Fair Value, Non-vested - Beginning Balance | $ 2.30 | $ 2.17 | $ 2.11
Weighted Average Grant Date Fair Value, Granted | 2.12 | 2.09 | 1.57
Weighted Average Grant Date Fair Value, Vested/Exercised | 2.02 | 2.35 | 1.93
Weighted Average Grant Date Fair Value, Forfeited/Cancelled | 1.92 |  | 2.27
Weighted Average Grant Date Fair Value, Non-vested - Ending Balance | $ 1.97 | $ 2.30 | $ 2.17
Stock Options, Weighted average remaining period for vesting | 2 years 4 months 10 days |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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