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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2013
Restricted Stock Units and Performance Share Awards [Member] |
Summary of Stock Option Activity | The following table summarizes RSU and PSA activity during the first nine months of 2013 and 2012:
Units |  | 2013 |  |  | 2012 |
Balance January 1, |  |  | 847,679 |  |  |  | 788,088 |
Granted |  |  | 210,856 |  |  |  | 207,728 |
Forfeited |  |  | (40,991 | ) |  |  | (29,825 | )
Shares delivered |  |  | (113,230 | ) |  |  | (95,430 | )
Balance September 30, |  |  | 904,314 |  |  |  | 870,561 |
Compensation Expense for the Periods | The following table sets forth aggregate RSU and PSA compensation expense for the periods indicated:
|  | September 30 |
Dollars in thousands |  | 2013 |  |  | 2012 |
Three months ended |  | $ | 892 |  |  | $ | 680 |
Nine months ended |  | $ | 2,216 |  |  |  | 1,959 |
SOSARs [Member] |
Summary of Stock Option Activity | The following table sets forth information related to outstanding SOSARS.
|  | 2013 |  |  | 2012 |
SOSARS |  | Shares |  |  | Wtd Avg Exercise Price |  |  | Shares |  |  | Wtd Avg Exercise Price |
Outstanding at January 1, |  |  | 2,121,454 |  |  | $ | 12.93 |  |  |  | 2,298,288 |  |  | $ | 12.35 |
Granted |  |  | 361,923 |  |  |  | 18.36 |  |  |  | 364,114 |  |  |  | 15.23 |
Exercised |  |  | (435,562 | ) |  |  | 12.63 |  |  |  | (500,074 | ) |  |  | 12.06 |
Canceled / forfeited |  |  | (73,901 | ) |  |  | 16.25 |  |  |  | (12,000 | ) |  |  | 14.96 |
Outstanding at September 30, |  |  | 1,973,914 |  |  | $ | 13.87 |  |  |  | 2,150,328 |  |  | $ | 12.94 |
SOSAR Grants |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value per share |  | $ | 5.64 |  |  |  |  |  |  | $ | 4.94 |  |  |  |  |
Aggregate grant date fair value (in thousands) |  | $ | 2,042 |  |  |  |  |  |  | $ | 1,797 |  |  |  |  |
Black-Scholes assumptions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend yield |  |  | 2.18 | % |  |  |  |  |  |  | 2.31 | % |  |  |  |
Risk free rate of return |  |  | 0.99 | % |  |  |  |  |  |  | 1.02 | % |  |  |  |
Volatility |  |  | 39.62 | % |  |  |  |  |  |  | 41.48 | % |  |  |  |
Expected life |  |  | 6 yrs |  |  |  |  |  |  |  | 6 yrs |  |  |  |  |
Compensation Expense for the Periods | The following table sets forth SOSAR compensation expense for the periods indicated:
|  | September 30 |
In thousands |  | 2013 |  |  | 2012 |
Three months ended |  | $ | 398 |  |  | $ | 369 |
Nine months ended |  |  | 1,198 |  |  |  | 1,095 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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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