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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Share-Based Compensation [Abstract] |
Summary of transaction involving stock options | The following table summarizes the transactions involving the Company’s stock option plans:
(In thousands except exercise price and life) |  | Options |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Life (Years) |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2012 |  |  | 141 |  |  | $ | 22.35 |  |  |  | 2.7 |  |  | $ | 1,859 |
Exercised |  |  | (48 | ) |  |  | 21.00 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2013 |  |  | 93 |  |  |  | 23.04 |  |  |  | 2.2 |  |  |  | 2,374 |
Exercised |  |  | (27 | ) |  |  | 21.92 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2014 |  |  | 66 |  |  |  | 23.49 |  |  |  | 1.7 |  |  |  | 2,438 |
Exercised |  |  | (21 | ) |  |  | 20.59 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 45 |  |  |  | 24.84 |  |  |  | 1.2 |  |  |  | 1,715 |
Exercisable at December 31, 2015 |  |  | 45 |  |  | $ | 24.84 |  |  |  | 1.2 |  |  | $ | 1,715 |
Summary of information concerning outstanding and exercisable stock options | The following table summarizes information concerning outstanding and exercisable stock options at December 31, 2015:
|  | Range of Exercise Price |
(In thousands except life and exercise price) |  | $ | 19.03 – 24.14 |  |  | $ | 24.15 – 26.11 |  |  | $ | 26.12 – 30.07 |
Options outstanding |  |  | 12 |  |  |  | 12 |  |  |  | 21 |
Weighted average remaining contractual life, in years |  |  | 0.2 |  |  |  | 1.1 |  |  |  | 1.8 |
Weighted average exercise price |  | $ | 19.64 |  |  | $ | 24.35 |  |  | $ | 28.16 |
Options exercisable |  |  | 12 |  |  |  | 12 |  |  |  | 21 |
Weighted average exercise price |  | $ | 19.64 |  |  | $ | 24.35 |  |  | $ | 28.16 |
Summary of nonvested stock and performance unit activity | The following table summarizes the non-vested stock and performance stock unit activity:
(In thousands except fair value) |  | Shares |  |  | Grant Date Weighted Average Fair Value |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2012 |  |  | 339 |  |  | $ | 33.22 |  |  | $ | 12,046 |
Granted |  |  | 262 |  |  |  | 46.14 |  |  |  |  |
Vested |  |  | (94 | ) |  |  | 40.57 |  |  |  |  |
Cancelled |  |  | (10 | ) |  |  | 42.22 |  |  |  |  |
Outstanding at December 31, 2013 |  |  | 497 |  |  |  | 38.46 |  |  |  | 24,095 |
Granted |  |  | 171 |  |  |  | 55.21 |  |  |  |  |
Vested |  |  | (40 | ) |  |  | 27.15 |  |  |  |  |
Cancelled |  |  | (24 | ) |  |  | 40.84 |  |  |  |  |
Outstanding at December 31, 2014 |  |  | 604 |  |  |  | 43.84 |  |  |  | 36,454 |
Granted |  |  | 154 |  |  |  | 60.65 |  |  |  |  |
Vested |  |  | (74 | ) |  |  | 35.51 |  |  |  |  |
Cancelled |  |  | (142 | ) |  |  | 47.02 |  |  |  |  |
Outstanding at December 31, 2015 |  |  | 542 |  |  | $ | 48.94 |  |  | $ | 34,063 |

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- Definition Tabular disclosure of the changes in outstanding nonvested 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -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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