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Performance-Contingent Restricted Stock Awards (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at vesting $ 583 $ 879 $ 608
Income tax benefits related to share-based payments 675 9,134 7,908
Fiscal Year Vested 2016 | 2014 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at vesting 441    
Income tax benefits related to share-based payments (3,090)    
Fair value at vesting $ 7,173    
Fiscal Year Vested 2015 | 2013 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at vesting   859  
Income tax benefits related to share-based payments   1,430  
Fair value at vesting   $ 18,378  
Fiscal Year Vested 2014 | 2012 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends at vesting     429
Income tax benefits related to share-based payments     2,668
Fair value at vesting     $ 13,748
TSR Modifier | Fiscal Year Vested 2016 | 2014 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease) (248,872)    
TSR Modifier | Fiscal Year Vested 2015 | 2013 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease)   (48,069)  
TSR Modifier | Fiscal Year Vested 2014 | 2012 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease)     193,756
ROIC Modifier | Fiscal Year Vested 2016 | 2014 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease) (13,637)    
ROIC Modifier | Fiscal Year Vested 2015 | 2013 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease)   100,090  
ROIC Modifier | Fiscal Year Vested 2014 | 2012 Award Granted      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares increase/(decrease)     50,939