Income Taxes - Reconciliation of Uncertain Tax Positions Excluding Accrued Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Gross uncertain tax positions at the beginning of the year	$ 2,857	$ 2,286	$ 2,679
Increase as a result of tax positions taken in the current period	60	571	966
Reduction as a result of the expiration of the applicable statute of limitations	(634)		(1,359)
Gross uncertain tax positions at the end of the year	$ 2,283	$ 2,857	$ 2,286