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Stock Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock Options Activity | A summary of the status of the Company’s stock options at December 31, 2013, 2012 and 2011, together with changes during the periods then ended, is presented below:
|  | Number of options |  |  | Weighted average exercise price |
Outstanding at December 31, 2010 |  |  | 399,569 |  |  |  |  |
Options granted at market price |  |  | 289,200 |  |  | $ | 16.06 |
Options exercised |  |  | (7,475 | ) |  |  | 7.24 |
Options cancelled |  |  | (10,000 | ) |  |  | 14.39 |
Outstanding at December 31, 2011 |  |  | 671,294 |  |  |  |  |
Options granted at market price |  |  | 7,500 |  |  |  | 17.55 |
Options exercised |  |  | (131,997 | ) |  |  | 13.98 |
Options cancelled |  |  | (8,100 | ) |  |  | 13.85 |
Outstanding at December 31, 2012 |  |  | 538,697 |  |  |  |  |
Options exercised |  |  | (138,298 | ) |  |  | 13.53 |
Outstanding at December 31, 2013 |  |  | 400,399 |  |  |  |  |
Available for grant at December 31, 2013 |  |  | 543,503 |  |  |  |  |
Summary of Stock Options Outstanding | The following table presents information on stock options outstanding:
|  | Year Ended |
|  | December 31, |
(in thousands, except share data) |  | 2013 |  |  | 2012 |
Intrinsic value of options exercised in the period |  | $ | 6,089 |  |  | $ | 895 |
($ in thousands, except share data) |  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (Years) |  |  | Aggregate Intrinsic Value |
Stock options: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding December 31, 2013 |  |  | 400,399 |  |  | $ | 15.05 |  |  |  | 6.02 |  |  | $ | 31,106 |
Exercisable at December 31, 2013 |  |  | 186,824 |  |  |  | 13.97 |  |  |  | 4.67 |  |  |  | 14,717 |
Summary of Fair Value of Stock Option Awards | The fair value of stock option awards as determined under the Black-Scholes option-pricing model was estimated with the following weighted-average assumptions:
|  | 2012 |  |  | 2011 |
Expected volatility |  |  | 65.9 | % |  |  | 65.9 | %
Risk free interest rate |  |  | 2.9 | % |  |  | 2.9 | %
Expected dividend yield |  |  | 2.5 | % |  |  | 2.3 | %
Expected term |  |  | 7.3 years |  |  |  | 7.3 years |
Weighted average fair value per share |  | $ | 9.08 |  |  | $ | 7.20 |
Schedule of Restricted Stock Unit Activity | The following table presents restricted stock unit activity for 2013:
|  | Units |  |  | Weighted Average Grant Date Fair Value |
Non-vested at December 31, 2012 |  |  | 47,500 |  |  | $ | 21.44 |
Granted |  |  | 44,970 |  |  |  | 50.28 |
Vested |  |  | (10,302 | ) |  |  | 21.44 |
Cancelled/Forfeited |  |  | (1,573 | ) |  |  | 21.44 |
Non-vested at December 31, 2013 |  |  | 80,595 |  |  |  | 37.53 |
Summary of Stock-Based Compensation Expense Related to Stock Option and Restricted Stock Unit Awards | The following table summarizes stock-based compensation expense related to stock option and restricted stock unit awards (in thousands):
|  | Year Ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Stock-based compensation expense included in selling, general and administrative expenses |  | $ | 1,016 |  |  | $ | 695 |  |  | $ | 473 |
Deferred income taxes |  |  | 404 |  |  |  | 272 |  |  |  | 188 |
Stock-based compensation expense related to stock options and restricted stock units, net of tax |  | $ | 612 |  |  | $ | 423 |  |  | $ | 285 |
Summary of Information about Stock Options Outstanding | The following table summarizes information about stock options outstanding at December 31, 2013:
Options outstanding |  | Options exercisable |
Exercise price range |  | Number of shares |  |  | Weighted- average exercise price |  |  | Weighted- average remaining contractual life (years) |  | Exercisable at December 31, 2013 |  |  | Weighted- average exercise price |
$2.01 - $ 2.58 |  |  | 2,250 |  |  | $ | 2.29 |  |  | Indefinite |  |  | 2,250 |  |  | $ | 2.29 |
8.82 - 17.55 |  |  | 398,149 |  |  |  | 15.13 |  |  | 6.1 |  |  | 184,574 |  |  |  | 14.11 |
|  |  | 400,399 |  |  |  | 15.05 |  |  |  |  |  | 186,824 |  |  |  | 13.97 |

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