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Common Stock (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of reconciliation of changes in common shares issued | A reconciliation of the changes in common shares issued is as follows:
| Year ended December 31,
| 2017 |  | 2016
Shares issued at the beginning of the year | 59,684,669 |  |  | 56,220,214 |
Issued in sale of common stock | — |  |  | 2,450,339 |
Issued in acquisition | — |  |  | 247,764 |
Issued in payment of accrued liability | — |  |  | 20,000 |
Issued as restricted stock award grants | 275,029 |  |  | 632,240 |
Issued upon exercise of stock options | 663,288 |  |  | 114,112 |
Shares issued at the end of the year | 60,622,986 |  |  | 59,684,669 |
Schedule of stock option activity | Stock option activity for the year ended December 31, 2017 is as follows:
Options |  | Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value
Outstanding as of January 1, 2017 |  | 663,288 |  |  | $ | 8.87 |  |  |  |  |
Exercised |  | (663,288 | ) |  | 8.87 |  |  |  |  |
Forfeited |  | — |  |  | — |  |  |  |  |
Expired |  | — |  |  | — |  |  |  |  |
Outstanding as of December 31, 2017 |  | — |  |  | $ | — |  |  | 0.00 |  | $ | — |
Schedule of restricted stock activity | Restricted stock share activity for the year ended December 31, 2017 is as follows:
Restricted Stock Shares |  | Shares |  | Weighted- Average Fair Value at Date of Grant
Non-vested at January 1, 2017 |  | 683,242 |  |  | $ | 15.92 |
Granted to employees |  | 260,029 |  |  | 10.62 |
Granted to service provider |  | 15,000 |  |  | 9.34 |
Vested |  | (590,027 | ) |  | 14.63 |
Forfeited |  | (121,986 | ) |  | 17.48 |
Non-vested at December 31, 2017 |  | 246,258 |  |  | $ | 12.24 |
Schedule of restricted stock unit activity | Restricted stock unit share activity for the year ended December 31, 2017 is as follows:
Restricted Stock Unit Shares |  | Shares |  | Weighted- Average Fair Value at Date of Grant
RSU share equivalents at January 1, 2017 |  | 768,393 |  |  | $ | 12.02 |
2016 share equivalents forfeited |  | (263,585 | ) |  | 12.02 |
2016 share equivalents not earned |  | (252,403 | ) |  | 12.02 |
2016 share equivalents |  | 252,405 |  |  | 12.02 |
2017 share equivalents granted |  | 604,682 |  |  | 18.70 |
2017 share equivalents forfeited |  | (131,756 | ) |  | 18.48 |
RSU share equivalents at December 31, 2017 |  | 725,331 |  |  | $ | 16.41 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited 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=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: 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=96867065&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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