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NET INCOME PER SHARE (TABLES) | 12 Months Ended
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Dec. 31, 2010
NET INCOME PER SHARE [Abstract] |
Schedule of Diluted Shares Calculation |
|  |  |  | Year Ended December 31,
|  |  |  | 2012 |  | 2011 |  | 2010
Shares used in basic earnings per share calculation | 54,738 |  | 56,669 |  | 60,361
| Effect of dilutive securities: |  |  |  |  |
|  | Stock options | 378 |  | 727 |  | 874
|  | Restricted stock units | 424 |  | 564 |  | 557
|  | Performance-based restricted stock units | - |  | 3 |  | -
|  |  | Total effects of dilutive securities | 802 |  | 1,294 |  | 1,431
Shares used in dilutive earnings per share calculation | 55,540 |  | 57,963 |  | 61,792

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- Definition Tabular disclosure of the reconciliation of basic net earnings per share (or unit) to diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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