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Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 4 Months Ended 6 Months Ended
Jul. 17, 2021
Jul. 11, 2020
Apr. 24, 2021
Apr. 18, 2020
Jul. 17, 2021
Jul. 11, 2020
Numerator:            
Net earnings $ 16,814 $ 28,467 $ 19,516 $ 15,402 $ 36,330 $ 43,869
Adjustment for earnings attributable to participating securities (305) (670)     (736) (1,070)
Net earnings used in calculating earnings per share $ 16,509 $ 27,797     $ 35,594 $ 42,799
Denominator:            
Weighted average shares outstanding, including participating securities 35,693 35,706     35,734 35,972
Adjustment for participating securities (648) (840)     (724) (877)
Shares used in calculating basic earnings per share 35,045 34,866     35,010 35,095
Shares used in calculating diluted earnings per share 35,242 34,867     35,166 35,095
Basic net earnings per share: $ 0.47 $ 0.80     $ 1.02 $ 1.22
Diluted net earnings per share: $ 0.47 $ 0.80     $ 1.01 $ 1.22
Stock Warrant [Member]            
Denominator:            
Effect of dilutive restricted stock awards 134       112  
Restricted Stock Awards [Member]            
Denominator:            
Effect of dilutive restricted stock awards 63 1     44