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Summary of Significant Accounting Policies and Basis of Presentation - Schedule of Computation of Basic and Diluted EPS For Continuing Operations (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 4 Months Ended 12 Months Ended
Dec. 31, 2016
Oct. 08, 2016
Jul. 16, 2016
Jan. 02, 2016
Oct. 10, 2015
Jul. 18, 2015
Apr. 23, 2016
Apr. 25, 2015
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Numerator:                      
Earnings from continuing operations $ 12,806 $ 16,730 $ 17,560 $ 17,164 $ 15,248 $ 20,307 $ 9,960 $ 10,447 $ 57,056 $ 63,166 $ 59,120
Adjustment for earnings attributable to participating securities                 (1,011) (1,098) (1,015)
Earnings from continuing operations used in calculating earnings per share                 $ 56,045 $ 62,068 $ 58,105
Denominator:                      
Weighted average shares outstanding, including participating securities                 37,483 37,612 37,641
Adjustment for participating securities                 (664) (654) (646)
Shares used in calculating basic earnings per share                 36,819 36,958 36,995
Effect of dilutive stock options                 73 106 69
Shares used in calculating diluted earnings per share                 36,892 37,064 37,064
Basic earnings per share from continuing operations $ 0.34 $ 0.45 $ 0.47 $ 0.46 $ 0.41 $ 0.54 $ 0.27 $ 0.28 $ 1.52 $ 1.68 $ 1.57
Diluted earnings per share from continuing operations $ 0.34 $ 0.45 $ 0.47 $ 0.46 $ 0.40 $ 0.54 $ 0.27 $ 0.28 $ 1.52 $ 1.67 $ 1.57