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Quarterly Results for 2012 and 2011 (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2012
Selected Quarterly Financial Information [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] |
| Quarter Ended |  | Total Year
| March 31 |  | June 30 |  | Sept. 30 |  | Dec. 31 |
2012 |  |  |  |  |  |  |  |  |
Sales | $ | 355,780 |  |  | $ | 371,926 |  |  | $ | 408,988 |  |  | $ | 434,306 |  |  | $ | 1,571,000 |
Operating Income | 84,009 |  |  | 98,590 |  |  | 113,174 |  |  | 115,678 |  |  | 411,451 |
Net Income | 53,437 |  |  | 69,079 |  |  | 80,560 |  |  | 75,609 |  |  | 278,685 |
Basic EPS | 0.44 |  |  | 0.56 |  |  | 0.66 |  |  | 0.61 |  |  | 2.27 |
Diluted EPS | 0.42 |  |  | 0.54 |  |  | 0.62 |  |  | 0.59 |  |  | 2.17 |
2011 |  |  |  |  |  |  |  |  |
Sales | $ | 357,731 |  |  | $ | 357,397 |  |  | $ | 385,091 |  |  | $ | 388,423 |  |  | $ | 1,488,642 |
Operating Income | 87,578 |  |  | 79,073 |  |  | 108,310 |  |  | 81,325 |  | (a) | 356,286 |
Net Income | 58,412 |  |  | 56,454 |  |  | 104,909 |  | (b) | 56,230 |  | (a) | 276,005 |
Basic EPS | 0.48 |  |  | 0.46 |  |  | 0.86 |  |  | 0.46 |  |  | 2.27 |
Diluted EPS | 0.47 |  |  | 0.45 |  |  | 0.84 |  |  | 0.45 |  |  | 2.20 |
(a) | Fourth quarter 2011 included a pre-tax expense of $6.5 million ($4.1 million after tax) due to an increase in a disposition reserve.
(b) | Third quarter 2011 included a benefit of $16.0 million from the reversal of a reserve related to the taxability of the AFMC.

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=20225539&loc=d3e1280-108306 + Details
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