Stockholders' Equity (Share Repurchase Program) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019
Stockholders' Equity Note [Abstract]
Common stock repurchased	$ 30,001	$ 54,997	$ 70,001	$ 94,997	$ 30,000
Common stock approved under the share repurchase program	200,000		200,000		200,000
Common stock available for repurchase	$ 170,000		$ 170,000		$ 170,000
Common stock repurchased (in shares)	0.6		1.4
Average cost per share repurchased (in dollars per share)	$ 53.64		$ 48.37