Allowance for Doubtful Accounts Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Charged to Expense	$ 4,215	$ 3,365	$ 2,395
Allowance for Doubtful Accounts, Current
Financing Receivable, Allowance for Credit Losses [Line Items]
Beginning Balance	1,703	1,341	2,723
Charged to Expense	4,215	3,365	2,395
Write-Offs and Other	2,764	3,003	3,777
Ending Balance	$ 3,154	$ 1,703	$ 1,341