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Equity Incentive Plan (Tables) | 6 Months Ended
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Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock Options Outstanding | The following table is a summary of the Company’s stock options outstanding as of June 30, 2015, and changes therein during the six months then ended.
| Number of Stock Options |  | Weighted Average Grant Date Fair Value |  | Weighted Average Exercise Price |  | Weighted Average Contractual Life (years)
Outstanding - December 31, 2014 | 5,138,072 |  |  | $ | 3.08 |  |  | $ | 10.04 |  |  | 7.44 |
Granted | 1,090,000 |  |  | 4.07 |  |  | 14.76 |  |  | 9.92 |
Forfeited | (60,000 | ) |  | 3.91 |  |  | 13.13 |  |  | — |
Exercised | (84,624 | ) |  | 2.30 |  |  | 7.09 |  |  | — |
Outstanding - June 30, 2015 | 6,083,448 |  |  | 3.29 |  |  | 10.89 |  |  | 6.89 |
Exercisable - June 30, 2015 | 3,026,770 |  |  | 2.57 |  |  | 8.06 |  |  | 4.46 |
Status of the Company's Restricted Share Awards | The following is a summary of the status of the Company’s restricted share awards as of June 30, 2015, and changes therein during the six months then ended.
| Number of Shares Awarded |  | Weighted Average Grant Date Fair Value
Non-vested at December 31, 2014 | 1,003,074 |  |  | $ | 13.11 |
Granted | 419,000 |  |  | 14.76 |
Vested | (193,232 | ) |  | 13.11 |
Forfeited | (28,200 | ) |  | 13.13 |
Non-vested at June 30, 2015 | 1,200,642 |  |  | 13.69 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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