Summary of Activity in Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 10,120	$ 9,671	$ 8,989
Charged to Costs and Expenses	5,735	5,890	5,315
Write-offs, Net of Recoveries	(3,901)	(5,441)	(4,633)
Balance at End of Period	11,954	10,120	9,671
Trade Receivables
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	4,327	4,338	3,773
Charged to Costs and Expenses	2,772	3,985	2,893
Write-offs, Net of Recoveries	(1,938)	(3,996)	(2,328)
Balance at End of Period	5,161	4,327	4,338
Other Receivables
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	5,555	5,103	4,994
Charged to Costs and Expenses	2,963	1,897	2,414
Write-offs, Net of Recoveries	(1,969)	(1,445)	(2,305)
Balance at End of Period	6,549	5,555	5,103
Other Non-Current Receivables
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	238	230	222
Charged to Costs and Expenses		8	8
Write-offs, Net of Recoveries	6
Balance at End of Period	$ 244	$ 238	$ 230