Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts
Balance, beginning of period	$ 1,656	$ 1,345	$ 4,503
Provision	(570)	299	1,212
Charge-offs / Credits issued	(151)	12	(4,370)
Acquisitions and other	47
Balance, end of period	982	1,656	1,345
Allowance for Customer Credits [Member]
Valuation and Qualifying Accounts
Balance, beginning of period	95,537	98,650	82,483
Provision	203,677	187,422	175,260
Charge-offs / Credits issued	(208,665)	(193,753)	(159,093)
Acquisitions and other		3,218
Balance, end of period	$ 90,549	$ 95,537	$ 98,650