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Earnings per Share/Capital Stock: (Details 2) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 27, 2014
Additional disclosure |  |  |
Options outstanding (in shares) | 247,064 | 352,096 |
Stock options included in the calculation of diluted EPS (in shares) | 247,064 | 352,096 |
Stock options not included in the calculation of diluted EPS (in shares) | 0 |  |
Anti-dilutive stock options not included in the computation of diluted EPS (in shares) | 0 | 0 |
Common Shares issued under DRP and the 2000 and 2008 Employee Plans | 57,249 | 92,586 |
Value of Common Shares issued under DRP and the 2000 and 2008 Employee Plans | $ 201 | $ 625 |
Common Shares repurchased in the open market under DRP and 401(k) Plan | 159,754 | 85,194 |
Dividends paid | $ 7,846 | $ 6,838 |
Quarterly dividends paid, per share of common stock (in dollars per share) | $ 0.2025 | $ 0.1775 |
Authorized shares to be repurchased |  |  | 1,250,000
Restricted Stock Units |  |  |
Additional disclosure |  |  |
Restricted stock units outstanding (in shares) | 237,174 | 290,416 |

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