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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 04, 2015
Jul. 05, 2014
Jul. 04, 2015
Jul. 05, 2014
Earnings Per Share [Abstract]        
Net income $ 2,870 $ 3,236 $ (6,075) $ (5,372)
Basic weighted shares outstanding (in shares) 87,399 85,874 87,282 85,531
Dilutive effect of share-based awards (in shares) 463 598    
Diluted weighted average shares outstanding (in shares) 87,862 86,472 87,282 85,531
Basic earnings per share (in dollars per share) $ 0.03 $ 0.04    
Diluted earnings per share (in dollars per share) $ 0.03 $ 0.04