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NET INCOME PER SHARE (TABLES) | 6 Months Ended
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Jun. 30, 2016
NET INCOME PER SHARE [Abstract] |
Schedule of Diluted Shares Calculation | The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands):
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2016 |  | 2015 |  | 2016 |  | 2015
Shares used in basic earnings per share calculation |  | 47,873 |  | 48,325 |  | 48,120 |  | 48,347
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options |  | 10 |  | 397 |  | 14 |  | 392
Restricted stock units |  | 324 |  | 321 |  | 335 |  | 358
Performance-based restricted stock units |  | 14 |  | 21 |  | 14 |  | 16
Total effects of dilutive securities |  | 348 |  | 739 |  | 363 |  | 766
Shares used in dilutive earnings per share calculation |  | 48,221 |  | 49,064 |  | 48,483 |  | 49,113

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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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