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Performance-Contingent Restricted Stock Awards (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Oct. 06, 2018
Oct. 07, 2017
Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at Vesting $ 492 $ 553  
Fiscal Year Vested 2018 | 2016 Award      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at Vesting 405    
Income tax expense related to share-based payments (2,130)    
Fair Value at Vesting $ 6,504    
Fiscal Year Vested 2018 | TSR Modifier | 2016 Award      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares Increase/(Decrease) (333,112)    
Fiscal Year Vested 2018 | ROIC Modifier | 2016 Award      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares Increase/(Decrease) (114,190)    
Fiscal Year Vested 2017 | 2015 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at Vesting     $ 392
Income tax expense related to share-based payments     (3,099)
Fair Value at Vesting     $ 6,316
Fiscal Year Vested 2017 | TSR Modifier | 2015 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares Increase/(Decrease)     (378,219)
Fiscal Year Vested 2017 | ROIC Modifier | 2015 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares Increase/(Decrease)     (49,272)