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Stock-Based Compensation Plans (Tables) | 3 Months Ended
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Mar. 31, 2015
Stock-Based Compensation Plans [Abstract] |
Summary of Changes in Outstanding Stock Options | The following is a summary of the changes in outstanding stock options for the three months ended March 31, 2015:
|  |  |  |  |  |  |  | Weighted Average |
|  |  |  |  |  |  |  | Remaining Contractual |
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Term (Years) |
Outstanding at December 31, 2014 |  |  | 9,875 |  |  | $ | 10.99 |  |  |  | 0.4 |
Expired |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (3,125 | ) |  |  | 11.14 |  |  |  | — |
Forfeited, other |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at March 31, 2015 |  |  | 6,750 |  |  | $ | 10.92 |  |  |  | 0.1 |
Options exercisable at March 31, 2015 |  |  | 6,750 |  |  | $ | 10.92 |  |  |  | 0.1 |
Restricted and Performance-based Share Activity | Our restricted and performance-based share activity was as follows for the three months ended March 31, 2015:
|  | Shares |  |  | Weighted Average Grant Date Fair Value Per Share |
Balance at December 31, 2014 |  |  | 749,018 |  |  | $ | 24.62 |
Granted |  |  | — |  |  |  | — |
Vested |  |  | (30,343 | ) |  |  | 36.14 |
Forfeited |  |  | (1,100 | ) |  |  | 22.30 |
Balance at March 31, 2015 |  |  | 717,575 |  |  | $ | 24.13 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock and performance-based stock that were outstanding at the beginning and end of the year, and the number of restricted stock and performance-based stock that were granted, vested, or forfeited during the year. + References No definition available. + 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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