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NET INCOME (LOSS) PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Schedule of adjusted net income and diluted common shares | Diluted common shares were calculated as follows:
| Thirteen weeks ended |  | Thirty-nine weeks ended
(in thousands, except per share data) | September 30, 2018 | October 1, 2017 |  | September 30, 2018 | October 1, 2017
Net income | $ | 24,380 |  | $ | 21,221 |  |  | $ | 50,867 |  | $ | 39,029 |
Weighted average number of common shares used in basic net income per common share | 39,743 |  | 41,046 |  |  | 40,138 |  | 41,420 |
Dilutive effect of non-vested restricted stock | 330 |  | 230 |  |  | 279 |  | 251 |
Weighted average number of common shares used in diluted net income per common share | 40,073 |  | 41,276 |  |  | 40,417 |  | 41,671 |
Net income per common share: |  |  |  |  |
Basic | $ | 0.61 |  | $ | 0.52 |  |  | $ | 1.27 |  | $ | 0.94 |
Diluted | $ | 0.61 |  | $ | 0.51 |  |  | $ | 1.26 |  | $ | 0.94 |
Anti-dilutive shares | 414 |  | 354 |  |  | 500 |  | 388 |

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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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