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Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share for Continuing Operations (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Oct. 10, 2015
Oct. 04, 2014
Oct. 10, 2015
Oct. 04, 2014
Numerator:        
Earnings from continuing operations $ 15,248 $ 17,169 $ 46,002 $ 47,083
Adjustment for earnings attributable to participating securities (259) (280) (806) (820)
Earnings from continuing operations used in calculating earnings per share $ 14,989 $ 16,889 $ 45,196 $ 46,263
Denominator:        
Weighted average shares outstanding, including participating securities 37,553 37,717 37,617 37,678
Adjustment for participating securities (639) (616) (659) (656)
Shares used in calculating basic earnings per share 36,914 37,101 36,958 37,022
Effect of dilutive stock options 100 61 118 71
Shares used in calculating diluted earnings per share 37,014 37,162 37,076 37,093
Basic earnings per share from continuing operations $ 0.41 $ 0.46 $ 1.22 $ 1.25
Diluted earnings per share from continuing operations $ 0.40 $ 0.45 $ 1.22 $ 1.25