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Share-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Share-Based Compensation Expense | The following table summarizes share-based compensation expense:
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |
Restricted stock |  | $ | 802 |  |  | $ | 890 |  |  | $ | 2,522 |  |  | $ | 2,610 |
Performance unit incentive plan (“PUP”) |  |  | 347 |  |  |  | 548 |  |  |  | 871 |  |  |  | 1,220 |
Stock options |  |  | 3 |  |  |  | 148 |  |  |  | 104 |  |  |  | 450 |
Restricted stock units |  |  | 50 |  |  |  | 84 |  |  |  | 72 |  |  |  | 244 |
Total share-based compensation before income tax benefit |  |  | 1,202 |  |  |  | 1,670 |  |  |  | 3,569 |  |  |  | 4,524 |
Income tax benefit |  |  | (445 | ) |  |  | (571 | ) |  |  | (1,326 | ) |  |  | (1,606 | )
Total share-based compensation, net of income tax benefit |  | $ | 757 |  |  | $ | 1,099 |  |  | $ | 2,243 |  |  | $ | 2,918 |
Summary of Activity of the Outstanding Share-Based Compensation Awards | The following table summarizes the activity of the outstanding share-based compensation awards:
|  | Restricted Stock |  |  | Restricted Stock Units |  |  | PUP Awards |
|  |  |  |  | Weighted- |  |  |  |  |  | Weighted- |  |  |  |  |  | Weighted- |
|  |  |  |  | Average |  |  |  |  |  | Average |  |  |  |  |  | Average |
|  |  |  |  | Grant Date |  |  |  |  |  | Grant Date |  |  |  |  |  | Grant Date |
|  | Shares |  |  | Fair Value |  |  | Units |  |  | Fair Value |  |  | Units |  |  | Fair Value |
Balance at January 1, 2013 |  |  | 516,351 |  |  | $ | 21.25 |  |  |  | 40,500 |  |  | $ | 20.82 |  |  |  | 210,600 |  |  | $ | 21.70 |
Granted |  |  | 101,300 |  |  |  | 27.28 |  |  |  | 8,600 |  |  |  | 27.35 |  |  |  | 93,100 |  |  |  | 27.35 |
Vested |  |  | (161,186 | ) |  |  | 20.74 |  |  |  | (11,300 | ) |  |  | 19.10 |  |  |  | — |  |  |  | — |
Forfeited |  |  | (5,966 | ) |  |  | 23.07 |  |  |  | (8,840 | ) |  |  | 22.33 |  |  |  | (432 | ) |  |  | 20.60 |
Balance at September 30, 2013 |  |  | 450,499 |  |  |  | 22.76 |  |  |  | 28,960 |  |  |  | 22.98 |  |  |  | 303,268 |  |  |  | 23.43 |
Summary of Stock Option Activity | The following table summarizes stock option activity:
|  |  |  |  | Weighted- |  |  |  |
|  |  |  |  | Average |  |  | Options |
|  | Shares |  |  | Exercise Price |  |  | Exercisable |
Options outstanding at January 1, 2013 |  |  | 363,896 |  |  | $ | 22.03 |  |  |  | 276,009 |
Exercised |  |  | (47,343 | ) |  |  | 19.48 |  |  |  |  |
Forfeited or expired |  |  | (27,419 | ) |  |  | 28.22 |  |  |  |  |
Options outstanding at September 30, 2013 |  |  | 289,134 |  |  |  | 21.87 |  |  |  | 287,134 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + 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 (h)(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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- 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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