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EARNINGS PER SHARE (Tables) | 12 Months Ended
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Dec. 31, 2012
Computation of Basic and Diluted Income Per Common Share | The following table sets forth the computation of basic and diluted income per common share for the periods presented.
|  | Year Ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (In thousands, except per share data) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 163,820 |  |  | $ | 158,027 |  |  | $ | 205,435 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Basic common shares outstanding |  |  | 96,384 |  |  |  | 99,281 |  |  |  | 101,678 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock options and unvested restricted stock |  |  | 1,113 |  |  |  | 1,095 |  |  |  | 930 |
Diluted common shares outstanding |  |  | 97,497 |  |  |  | 100,376 |  |  |  | 102,608 |
Basic income per common share |  | $ | 1.70 |  |  | $ | 1.59 |  |  | $ | 2.02 |
Diluted income per common share |  | $ | 1.68 |  |  | $ | 1.57 |  |  | $ | 2.00 |

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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