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Stock Option And Stock Award Plans (Tables) | 12 Months Ended
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Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary Of Stock Options Outstanding | A summary of stock options outstanding at December 31, 2014, 2013 and 2012, and changes during those years, is presented below:
|  |  | Option Exercise Price/Share
| Number of Options |  | Range |  | Weighted Average
Outstanding at January 1, 2012 | 1,121,500 |  |  | $ | 14.06 |  |  | to |  | $ | 19.84 |  |  | $ | 17.40 |
Granted | 182,100 |  |  | 18.51 |  |  | to |  | 19.40 |  |  | 19.34 |
Forfeited and Expired | (50,300 | ) |  | 15.80 |  |  | to |  | 19.84 |  |  | 19.34 |
Exercised | (176,600 | ) |  | 14.72 |  |  | to |  | 18.12 |  |  | 16.33 |
Outstanding at December 31, 2012 | 1,076,700 |  |  | 14.06 |  |  | to |  | 19.84 |  |  | 17.81 |
Granted | 184,700 |  |  | 24.84 |  |  | to |  | 30.01 |  |  | 24.97 |
Forfeited and Expired | (34,000 | ) |  | 15.11 |  |  | to |  | 24.84 |  |  | 21.10 |
Exercised | (180,600 | ) |  | 14.27 |  |  | to |  | 19.84 |  |  | 17.32 |
Outstanding at December 31, 2013 | 1,046,800 |  |  | 14.06 |  |  | to |  | 30.01 |  |  | 19.06 |
Granted | 181,476 |  |  | 19.84 |  |  | to |  | 22.49 |  |  | 22.41 |
Forfeited and Expired | (22,581 | ) |  | 15.80 |  |  | to |  | 24.84 |  |  | 21.42 |
Exercised | (41,575 | ) |  | 15.80 |  |  | to |  | 19.84 |  |  | 17.55 |
Outstanding at December 31, 2014 | 1,164,120 |  |  | $ | 14.06 |  |  | to |  | $ | 30.01 |  |  | $ | 19.59 |
Summary Of Additional Information On Stock Options Outstanding And Exercisable | The following table summarizes additional information about stock options outstanding and exercisable at December 31, 2014:
|  |  |  |  |  | Options Outstanding at December 31, 2014 |  | Options Exercisable at December 31, 2014
|  |  |  |  |  |  |  | Weighted Average |  | Aggregate Intrinsic Value (In Thousands) |  |  |  |  |  | Aggregate Intrinsic Value (In Thousands)
Range of Exercise Prices |  | Shares |  | Remaining Contractual Life (Years) |  | Exercise Price |  |  | Shares |  | Weighted Average Exercise Price |
$ | — |  |  | to |  | $ | 15.00 |  |  | 26,000 |  |  | 0.9 |  | $ | 14.06 |  |  | $ | 219 |  |  | 26,000 |  |  | $ | 14.06 |  |  | $ | 219 |
15.01 |  |  | to |  | 17.50 |  |  | 314,500 |  |  | 1.2 |  | 16.53 |  |  | 1,873 |  |  | 314,500 |  |  | 16.53 |  |  | 1,873 |
17.51 |  |  | to |  | 20.00 |  |  | 488,870 |  |  | 3.3 |  | 19.03 |  |  | 1,693 |  |  | 417,550 |  |  | 18.97 |  |  | 1,470 |
20.01 |  |  | to |  | 25.00 |  |  | 330,250 |  |  | 8.7 |  | 23.61 |  |  | — |  |  | 40,875 |  |  | 24.84 |  |  | — |
25.01 |  |  | to |  | 30.01 |  |  | 4,500 |  |  | 8.6 |  | 30.01 |  |  | — |  |  | 1,125 |  |  | 30.01 |  |  | — |
Total |  | 1,164,120 |  |  | 4.2 |  | $ | 19.59 |  |  | $ | 3,785 |  |  | 800,050 |  |  | $ | 18.17 |  |  | $ | 3,562 |
Summary Of Additional Information On Non-Vested Restricted Stock Outstanding | The following table summarizes additional information about non-vested restricted stock outstanding at December 31, 2014:
| Non-vested Restricted Stock |  | Maximum Non-vested Restricted Stock Units Issuable Upon Satisfaction of Certain Performance Criteria
| Number of Shares |  | Weighted Avg. Grant Date Fair Value/Share |  | Grant Date Fair Value (In Thousands) |  | Number of Shares |  | Weighted Avg. Grant Date Fair Value/Share |  | Grant Date Fair Value (In Thousands)
Outstanding at January 1, 2012 | 126,150 |  |  | $ | 18.25 |  |  | $ | 2,302 |  |  | 85,000 |  |  | $ | 19.35 |  |  | $ | 1,645 |
Granted | 94,949 |  |  | 19.06 |  |  | 1,810 |  |  | 87,200 |  |  | 18.79 |  |  | 1,638 |
Vested | (60,357 | ) |  | 18.01 |  |  | (1,087 | ) |  | — |  |  | — |  |  | — |
Forfeited | (16,842 | ) |  | 18.82 |  |  | (317 | ) |  | (80,400 | ) |  | 19.31 |  |  | (1,553 | )
Outstanding at December 31, 2012 | 143,900 |  |  | 18.82 |  |  | 2,708 |  |  | 91,800 |  |  | 18.85 |  |  | 1,730 |
Granted | 93,425 |  |  | 25.45 |  |  | 2,378 |  |  | 77,200 |  |  | 27.82 |  |  | 2,148 |
Vested | (58,175 | ) |  | 20.15 |  |  | (1,172 | ) |  | — |  |  | — |  |  | — |
Forfeited | (21,300 | ) |  | 20.70 |  |  | (441 | ) |  | (36,700 | ) |  | 19.83 |  |  | (728 | )
Outstanding at December 31, 2013 | 157,850 |  |  | 22.00 |  |  | 3,473 |  |  | 132,300 |  |  | 23.81 |  |  | 3,150 |
Granted | 95,707 |  |  | 22.18 |  |  | 2,123 |  |  | 59,675 |  |  | 21.54 |  |  | 1,285 |
Vested | (54,921 | ) |  | 20.73 |  |  | (1,139 | ) |  | — |  |  | — |  |  | — |
Forfeited | (10,578 | ) |  | 21.76 |  |  | (230 | ) |  | (62,262 | ) |  | 19.18 |  |  | (1,194 | )
Outstanding at December 31, 2014 | 188,058 |  |  | $ | 22.48 |  |  | $ | 4,227 |  |  | 129,713 |  |  | $ | 24.99 |  |  | $ | 3,241 |

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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 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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