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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Cash Proceeds Received from Share-based Payment Awards |
|  | Year Ended December 31,
|  | 2015 |  | 2014 |  | 2013
|  | (Amounts in thousands)
Cash received from stock option exercises |  | $ | 2,111 |  |  | $ | 6,247 |  |  | $ | 1,446 |
Compensation cost |  | 5,208 |  |  | 4,112 |  |  | 974 |
Excess tax benefit |  | 27 |  |  | 148 |  |  | 202 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following table provides the assumptions used in the calculation of grant-date fair values of stock options awarded during 2013 based on the Black-Scholes option pricing model.
| 2013
Weighted-average grant-date fair value | $7.11
Expected volatility | 33.16% - 33.18%
Weighted-average expected volatility | 33.17%
Risk-free interest rate | 0.88% - 1.60%
Expected dividend yield | 5.40% - 5.76%
Expected term in months | 72
Summary of Stock Option Activity | The following table presents a summary of the stock option activity under the Company’s plans for the year ended December 31, 2015:
| Shares |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value (in 000’s)
Outstanding at January 1, 2015 | 248,000 |  |  | $ | 49.85 |  |  |  |  |
Granted | — |  |  |  |  |  |  |  |
Exercised | (43,000) |  |  | $ | 49.10 |  |  |  |  |
Canceled or expired | (37,000) |  |  | $ | 58.48 |  |  |  |  |
Outstanding at December 31, 2015 | 168,000 |  |  | $ | 48.14 |  |  | 3.8 |  | $ | 305 |
Exercisable at December 31, 2015 | 128,000 |  |  | $ | 49.58 |  |  | 2.7 |  | $ | 183 |
Schedule of Options Authorized under Stock Option Plans, by Exercise Price Range | The following table presents information regarding stock options outstanding at December 31, 2015:
| Options Outstanding |  | Options Exercisable
Range of Exercise Prices | Number of Options |  | Weighted-Average Remaining Contractual Life (Years) |  | Weighted- Average Exercise Price |  | Number of Options |  | Weighted- Average Exercise Price
$33.61-$47.61 | 88,000 |  | 6.1 |  | $ | 43.29 |  |  | 48,000 |  | $ | 43.09 |
$50.01-$51.51 | 38,000 |  | 2.0 |  | $ | 50.72 |  |  | 38,000 |  | $ | 50.72 |
$54.93-$57.50 | 42,000 |  | 0.8 |  | $ | 55.96 |  |  | 42,000 |  | $ | 55.96 |
Summary of Grants | The following table presents the restricted stock unit grants summary at December 31, 2015:
| Grant Year
| 2015 |  | 2014 |  | 2013
Three-year performance period ending December 31, | 2017 |  |  | 2016 |  |  | 2015 |
Vesting shares, target (net of forfeited) | 99,250 |  |  | 85,500 |  |  | 78,500 |
Vesting shares, maximum (net of forfeited) | 186,094 |  |  | 160,313 |  |  | 176,625 |
Summary of Vested And Unvested RSU | The following table presents a summary of restricted stock unit awards activity during the years indicated:
| Year Ended December 31,
| 2015 |  | 2014 |  | 2013
| Shares |  | Weighted- Average Fair Value per Share |  | Shares |  | Weighted- Average Fair Value per Share |  | Shares |  | Weighted- Average Fair Value per Share
Outstanding at January 1 | 167,000 |  |  | $ | 41.15 |  |  | 170,500 |  |  | $ | 39.64 |  |  | 169,000 |  |  | $ | 42.22 |
Granted | 100,250 |  |  | $ | 53.80 |  |  | 93,500 |  |  | $ | 45.17 |  |  | 84,500 |  |  | $ | 36.82 |
Vested | — |  |  |  |  | — |  |  |  |  | — |  |  |
Forfeited/Canceled | (4,000) |  |  | $ | 43.10 |  |  | (16,500) |  |  | $ | 43.99 |  |  | (3,000) |  |  | $ | 36.82 |
Expired | — |  |  | $ | — |  |  | (80,500) |  |  | $ | 44.01 |  |  | (80,000) |  |  | $ | 40.22 |
Outstanding at December 31 | 263,250 |  |  | $ | 45.94 |  |  | 167,000 |  |  | $ | 41.15 |  |  | 170,500 |  |  | $ | 39.64 |

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