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Reconciliation of Effective Tax Amount (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 30, 2017
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Income Tax Disclosure [Abstract]        
Tax at U.S. federal income tax rate   $ 52,253 $ 87,338 $ 102,560
State income taxes, net of federal income tax benefit   3,564 7,266 8,556
Tax reform impact $ (48,160) (48,160)    
Section 199 qualifying production activities benefit   (5,422) (8,007) (6,725)
Net share-based payments windfalls [1]   (1,001)    
Other   (2,061) (836) (551)
Income tax expense (benefit)   $ (827) $ 85,761 $ 103,840
[1] Applied beginning in fiscal 2017 upon adoption of new guidance.