Inventories - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Geographic Valuation Methodologies Of Inventory [Line Items]
Effect of LIFO inventory liquidation on income	$ 0	$ 0
Foreign and US Countries
Geographic Valuation Methodologies Of Inventory [Line Items]
Percentage of FIFO Inventory	60.00%		61.00%
United States
Geographic Valuation Methodologies Of Inventory [Line Items]
Percentage of FIFO Inventory	32.00%
Percentage of LIFO Inventory	68.00%