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NET INCOME PER SHARE (Tables) | 6 Months Ended
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Jun. 30, 2018
Net income per share attributable to TTEC stockholders |
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,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Shares used in basic earnings per share calculation |  | 46,016 |  | 45,662 |  | 45,944 |  | 45,805
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options |  | 9 |  | 11 |  | 9 |  | 6
Restricted stock units |  | 374 |  | 460 |  | 469 |  | 395
Performance-based restricted stock units |  | 2 |  | 17 |  | 2 |  | 18
Total effects of dilutive securities |  | 385 |  | 488 |  | 480 |  | 419
Shares used in dilutive earnings per share calculation |  | 46,401 |  | 46,150 |  | 46,424 |  | 46,224

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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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