Common Stock Repurchases - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jul. 01, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchased and cancelled shares	9,290	38,970
Common stock repurchased, value	$ 700,000	$ 2,200,000
Common stock repurchased, average price	$ 79.07	$ 56.66
Share Repurchase Program [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchased and cancelled shares	439,485	430,866
Common stock repurchased, value	$ 35,000,000	$ 22,500,000
Common stock repurchased, average price	$ 79.64	$ 52.15
Share repurchase program shares authorized to be repurchased	$ 250,000,000