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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
Share-based Compensation [Abstract] |
Summary of Stock Option Activity | A summary of the status of stock options and related activity for the years ended December 31, 2016, 2015 and 2014 is presented below:
| Shares |  | Weighted Average Exercise Price per Share |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value (In thousands)
Options outstanding at January 1, 2014 | 210,241 |  |  | $ | 3.50 |  |  | 1.07 |  |  | $ | 12,538 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (205,241 | ) |  | 3.36 |  |  |  |  | 12,822 |
Forfeited/expired | — |  |  | — |  |  |  |  |
Options outstanding at December 31, 2014 | 5,000 |  |  | 9.07 |  |  | 0.69 |  |  | $ | 163 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (5,000 | ) |  | 9.07 |  |  |  |  | 124 |
Forfeited/expired | — |  |  | — |  |  |  |  |
Options outstanding at December 31, 2015 | — |  |  | — |  |  | — |  |  | $ | — |
Granted | — |  |  | — |  |  |  |  |
Exercised | — |  |  | — |  |  |  |  | — |
Forfeited/expired | — |  |  | — |  |  |  |  |
Options outstanding at December 31, 2016 | — |  |  | $ | — |  |  | — |  |  | $ | — |
Options exercisable at December 31, 2016 | — |  |  | $ | — |  |  | — |  |  | $ | — |
Summary of Restricted Stock Award and Unit Activity | The following table summarizes restricted stock activity for the twelve months ended December 31, 2016, 2015 and 2014:
| Number of Unvested Restricted Shares |  | Weighted Average Grant Date Fair Value
Unvested shares as of January 1, 2014 | 463,637 |  |  | $ | 44.80 |
Granted | 246,409 |  |  | 65.07 |
Vested | (272,665 | ) |  | 45.76 |
Forfeited | (50,136 | ) |  | 53.72 |
Unvested shares as of December 31, 2014 | 387,245 |  |  | $ | 55.87 |
Granted | 352,605 |  |  | $ | 35.99 |
Vested | (236,812 | ) |  | 52.39 |
Forfeited | (18,799 | ) |  | 45.21 |
Unvested shares as of December 31, 2015 | 484,239 |  |  | $ | 43.51 |
Granted | 451,241 |  |  | $ | 27.78 |
Vested | (252,566 | ) |  | 43.94 |
Forfeited | (69,858 | ) |  | 33.43 |
Unvested shares as of December 31, 2016 | 613,056 |  |  | $ | 32.90 |

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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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- 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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