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NET INCOME PER SHARE (Tables) | 9 Months Ended
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Sep. 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 September 30, |  | Nine Months Ended September 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
Shares used in basic earnings per share calculation |  | 46,172 |  | 45,838 |  | 46,021 |  | 45,816
Effect of dilutive securities: |  |  |  |  |  |  |  |
Stock options |  | 6 |  | 10 |  | 8 |  | 9
Restricted stock units |  | 138 |  | 517 |  | 360 |  | 513
Performance-based restricted stock units |  | — |  | 2 |  | 1 |  | 10
Total effects of dilutive securities |  | 144 |  | 529 |  | 369 |  | 532
Shares used in dilutive earnings per share calculation |  | 46,316 |  | 46,367 |  | 46,390 |  | 46,348

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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://fasb.org/us-gaap/role/ref/legacyRef -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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