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NET INCOME PER SHARE (TABLES) | 6 Months Ended
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Jun. 30, 2015
NET INCOME PER SHARE [Abstract] |
Schedule of Diluted Shares Calculation |
|  |  |  | Three months ended June 30, |  | Six Months Ended June 30,
|  |  |  | 2015 |  | 2014 |  | 2015 |  | 2014
Shares used in basic earnings per share calculation | 48,325 |  | 49,351 |  | 48,347 |  | 49,696
| Effect of dilutive securities: |  |  |  |  |  |  |
|  | Stock options | 397 |  | 425 |  | 392 |  | 419
|  | Restricted stock units | 321 |  | 335 |  | 358 |  | 421
|  | Performance-based restricted stock units | 21 |  | - |  | 16 |  | -
|  |  | Total effects of dilutive securities | 739 |  | 760 |  | 766 |  | 840
Shares used in dilutive earnings per share calculation | 49,064 |  | 50,111 |  | 49,113 |  | 50,536

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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