Summary of Activity in Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 13,334	$ 11,954	$ 10,120
Charged to Costs and Expenses	7,415	7,439	5,735
Write-offs, Net of Recoveries	(6,869)	(6,059)	(3,901)
Balance at End of Period	13,880	13,334	11,954
Trade Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	6,131	5,161	4,327
Charged to Costs and Expenses	3,886	3,982	2,772
Write-offs, Net of Recoveries	(3,604)	(3,012)	(1,938)
Balance at End of Period	6,413	6,131	5,161
Other Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	6,952	6,549	5,555
Charged to Costs and Expenses	3,520	3,450	2,963
Write-offs, Net of Recoveries	(3,261)	(3,047)	(1,969)
Balance at End of Period	7,211	6,952	6,549
Other Non-Current Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	251	244	238
Charged to Costs and Expenses	9	7
Write-offs, Net of Recoveries	(4)		6
Balance at End of Period	$ 256	$ 251	$ 244