Additional Cash Flow Information - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 24, 2016	Sep. 26, 2015
Supplemental Cash Flow Information [Abstract]
Income taxes paid	$ 48,615,000	$ 50,197,000
Interest paid	2,730,000	2,252,000
Acquired operating property by capital leases	46,456,000	11,869,000
Acquired operating property by accruing in accounts payable	3,237,000
Decrease in other liabilities	(5,436,000)	(3,849,000)
Purchases of common stock	$ 50,516,000	112,654,000
Accrued payments on purchases of common stock
Supplemental Cash Flow Information [Abstract]
Decrease in other liabilities		$ 5,440,000