Accumulated Other Comprehensive Income (Loss) and Shareholders' Equity (Stock Repurchases) (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Average Price Per Share (in dollars per share)	$ 36.09	$ 40.36
Shares repurchased per cash flow	$ (65,106)	$ (16,043)
Common Stock
Accumulated Other Comprehensive Income (Loss) [Line Items]
Repurchased common stock (in shares)	1,797,000	369,000
Cash purchase price	$ (64,877)	$ (14,884)
Purchases unsettled as of quarter end	125	222
Prior year purchases settled in current year	(354)	(1,381)
Shares repurchased per cash flow	$ (65,106)	$ (16,043)