Stock Repurchase Program (Detail) - USD ($) shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018	Jun. 30, 2019	Jul. 01, 2018	Oct. 29, 2018
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 129,688,000		$ 129,688,000
Stock repurchased during period, value	$ 61,690,000	$ 52,106,000	$ 61,690,000	$ 121,308,000
Repurchase Program October 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Authorized common stock to be repurchased					$ 200,000,000
Stock Repurchase Program, Aggregate Number of Shares Repurchased	1,601		1,601
Shares repurchased, value	$ 70,312,000		$ 70,312,000
Repurchase of common stock (in shares)			1,398
Stock repurchased during period, value			$ 61,690,000