Significant Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Sep. 29, 2018	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Current:
Federal		$ 18,510	$ 4,471	$ 34,255
State		8,084	4,894	5,225
Total current		26,594	9,365	39,480
Deferred:
Federal		8,081	12,860	(22,489)
State		(346)	1,398	102
Total deferred		7,735	14,258	(22,387)
Total provision for income taxes	$ 4,500	$ 34,329	$ 23,623	$ 17,093

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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