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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Stock Options Outstanding | The following table summarizes stock options outstanding and changes during the years ended December 31, 2016 and 2015:
|  | December 31, |  | December 31,
|  | 2016 |  | 2015
|  | Number of Stock Options |  | Weighted Average Exercise Price |  | Number of Stock Options |  | Weighted Average Exercise Price
Stock options outstanding at beginning of period |  | 326,424 |  | $ 24.89 |  | 13,413 |  | $ 302.16
Granted |  | - |  | - |  | 314,086 |  | 14.21
Expired |  | (210,872) |  | 19.13 |  | (1,075) |  | 356.93
Canceled or forfeited |  | (4,724) |  | 438.89 |  | - |  | -
Stock options outstanding at end of period |  | 110,828 |  | $ 18.24 |  | 326,424 |  | $ 24.89
Stock options exercisable at end of period |  | 110,723 |  | $ 18.22 |  | 316,005 |  | $ 25.16
Summary of Stock Options Outstanding and Exercisable by Stock Option Plan | The following table summarizes stock options outstanding and exercisable by stock option plan at December 31, 2016:
|  | Outstanding Stock Options |  | Exercisable Stock Options
Stock Option Plan |  | Number of Stock Options Outstanding |  | Weighted Average Exercise Price |  | Number of Stock Options Exercisable |  | Weighted Average Exercise Price
2004 Plan |  | 4,792 |  | $ 35.14 |  | 4,792 |  | $ 35.14
2004 Directors' Plan |  | 1,390 |  | 629.52 |  | 1,390 |  | 629.52
2013 Plan |  | 417 |  | 35.88 |  | 312 |  | 35.88
Replacement Stock Options |  | 104,229 |  | 9.33 |  | 104,229 |  | 9.33
|  | 110,828 |  | $ 18.24 |  | 110,723 |  | $ 18.22
Summary of Status of Non-Vested Restricted Shares | The following table summarizes RSU activity for the years ending December 31, 2016 and 2015:
|  | December 31, |  | December 31,
|  | 2016 |  | 2015
|  | Number of RSUs |  | Weighted-Average Grant Date Fair Value |  | Number of RSUs |  | Weighted-Average Grant Date Fair Value
Unvested RSUs at beginning of period |  | 32,699 |  | $ 34.25 |  | 45,390 |  | $ 34.12
Granted |  | - |  |  |  | - |  | -
Forfeited |  | (7,627) |  | 34.61 |  | (1,667) |  | 32.20
Vested |  | (16,423) |  | 29.09 |  | (11,024) |  | 34.04
Unvested RSUs at end of period |  | 8,649 |  | $ 43.71 |  | 32,699 |  | $ 34.25
Summary of Restricted Stock Awards | The following table summarizes RSA activity during the years ended December 31, 2016 and 2015:
|  | December 31, |  | December 31,
|  | 2016 |  | 2015
|  | Number of RSAs |  | Weighted-Average Grant Date Fair Value |  | Number of RSAs |  | Weighted-Average Grant Date Fair Value
Unvested RSAs at beginning of period |  | 1,366 |  | $ 40.01 |  | 2,223 |  | $ 62.65
Forfeited |  | (410) |  | 44.84 |  | (104) |  | 80.40
Vested |  | (956) |  | 37.94 |  | (753) |  | 101.26
Unvested RSAs at end of period |  | - |  | $ - |  | 1,366 |  | $ 40.01

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of employee stock purchase plan activity. + 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 (g) -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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