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NET INCOME (LOSS) PER SHARE | 9 Months Ended
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Oct. 01, 2017
Earnings Per Share [Abstract] |
NET INCOME (LOSS) PER SHARE | NET INCOME (LOSS) PER SHARE Diluted common shares were calculated as follows:
| Thirteen weeks ended |  | Thirty-nine weeks ended
(in thousands, except per share amounts) | October 1, 2017 | September 23, 2016 |  | October 1, 2017 | September 23, 2016
Net income (loss) | $ | 21,221 |  | $ | 23,429 |  |  | $ | 39,029 |  | $ | (33,338 | )
Weighted average number of common shares used in basic net income (loss) per common share | 41,046 |  | 41,762 |  |  | 41,420 |  | 41,651 |
Dilutive effect of non-vested restricted stock | 230 |  | 294 |  |  | 251 |  | — |
Weighted average number of common shares used in diluted net income (loss) per common share | 41,276 |  | 42,056 |  |  | 41,671 |  | 41,651 |
Net income (loss) per common share: |  |  |  |  |
Basic | $ | 0.52 |  | $ | 0.56 |  |  | $ | 0.94 |  | $ | (0.80 | )
Diluted | $ | 0.51 |  | $ | 0.56 |  |  | $ | 0.94 |  | $ | (0.80 | )
Anti-dilutive shares | 354 |  | 302 |  |  | 388 |  | 521 |

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