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Shareholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Share-based Compensation, Stock Options, Activity | The following table summarizes the activity for stock options and warrants for the nine months ended September 30, 2017:
|  | Stock Options |  | Warrants
|  | Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (In Thousands) |  | Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 2016 |  | 952,790 |  |  | $ | 39.90 |  |  | 7.60 |  | $ | — |  |  | 388,062 |  |  | $ | 76.50 |  |  | 1.24 |  | $ | — |
Changes during the period: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted |  | 447,757 |  |  | 11.70 |  |  |  |  |  |  | — |  |  | — |  |  |  |  |
Exercised |  | (3,835 | ) |  | 4.70 |  |  |  |  |  |  | — |  |  | — |  |  |  |  |
Forfeited |  | (244,413 | ) |  | 18.70 |  |  |  |  |  |  | (1,691 | ) |  | 700.00 |  |  |  |  |
Expired |  | (46,509 | ) |  | 41.20 |  |  |  |  |  |  | (167,393 | ) |  | 104.50 |  |  |  |  |
Outstanding at September 30, 2017 |  | 1,105,790 |  |  | $ | 33.30 |  |  | 5.11 |  | $ | 8.2 |  |  | 218,978 |  |  | $ | 54.80 |  |  | 1.15 |  | $ | — |
Vested at September 30, 2017 or expected to vest in the future |  | 1,105,336 |  |  | $ | 33.30 |  |  | 5.11 |  | $ | 8.2 |  |  | 218,978 |  |  | $ | 54.80 |  |  | 1.15 |  | $ | — |
Vested at September 30, 2017 |  | 1,097,350 |  |  | $ | 32.70 |  |  | 5.12 |  | $ | 8.2 |  |  | 218,978 |  |  | $ | 54.80 |  |  | 1.15 |  | $ | — |
Schedule of Restricted Stock | During the nine months ended September 30, 2017 and 2016, the Company issued restricted stock for services as follows (in thousands, except share data):
|  | Nine Months Ended September 30,
|  | 2017 |  | 2016
Number of restricted stock issued |  | 132,726 |  |  | 107,719 |
Value of restricted stock issued |  | $ | 469.9 |  |  | $ | 651.7 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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=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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