Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity (Stock Repurchases) (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Average Price Per Share (in dollars per share)	$ 36.59	$ 38.69
Shares repurchased per cash flow	$ (57,357)	$ (9,120)
Common Stock
Accumulated Other Comprehensive Income (Loss) [Line Items]
Repurchased common stock (in shares)	1,576,608	205,822
Cash purchase price	$ (57,684)	$ (7,963)
Purchases unsettled as of quarter end	681	224
Prior year purchases settled in current year	(354)	(1,381)
Shares repurchased per cash flow	$ (57,357)	$ (9,120)