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NET INCOME PER SHARE (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 24, 2016
Jun. 26, 2015
Jun. 24, 2016
Jun. 26, 2015
Earnings Per Share [Abstract]        
Net income (loss) $ (63,735) $ 17,273 $ (56,767) $ 22,989
Weighted average number of common shares used in basic net income (loss) per common share 41,688 41,240 41,595 41,135
Dilutive effect of non-vested restricted stock 0 235 0 337
Weighted average number of common shares used in diluted net income (loss) per common share 41,688 41,475 41,595 41,472
Net income (loss) per common share:        
Basic (in dollars per share) $ (1.53) $ 0.42 $ (1.36) $ 0.56
Diluted (in dollars per share) $ (1.53) $ 0.42 $ (1.36) $ 0.55
Anti-dilutive shares 527 106 446 189