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Quarterly Financial Data (Narrative) (Details) (USD $) | 3 Months Ended
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Dec. 31, 2013 owners | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011
Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges, per share | $ 0.03 | $ (0.04) | $ (0.47) | $ (0.01) | $ (0.02) | $ (0.05) | $ (0.06) | $ (0.01) | $ (0.10) | $ (0.06) | $ (0.04) | $ 0.00
Gain on sale of assets, per share |  |  |  | $ 0.08 |  |  |  |  |  |  |  |
Pension plan settlement, per share |  |  |  |  |  |  | $ (2.34) | $ (0.22) |  |  |  |
Tax settlement, per share |  |  |  |  |  |  |  | $ 0.23 |  |  |  |
Per share tax effect from prior period corrections |  |  |  |  |  |  |  |  | $ 0.11 |  |  |
Number of beneficial owners, including employees owning shares through the Company's 401(k) | 6,200 |  |  |  |  |  |  |  |  |  |  |

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- Details
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