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NET INCOME PER SHARE (TABLES) | 6 Months Ended
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Jun. 30, 2013
NET INCOME PER SHARE [Abstract] |
Schedule of Diluted Shares Calculation |
|  |  |  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  |  |  | 2013 |  | 2012 |  | 2013 |  | 2012
Shares used in basic earnings per share calculation | 51,861 |  | 55,125 |  | 52,104 |  | 55,809
| Effect of dilutive securities: |  |  |  |  |  |  |
|  | Stock options | 411 |  | 359 |  | 403 |  | 379
|  | Restricted stock units | 356 |  | 228 |  | 405 |  | 370
|  | Performance-based restricted stock units | - |  | - |  | - |  | -
|  |  | Total effects of dilutive securities | 767 |  | 587 |  | 808 |  | 749
Shares used in dilutive earnings per share calculation | 52,628 |  | 55,712 |  | 52,912 |  | 56,558

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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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