Employee Benefit Plans (Schedule of Stock Option Activity) (Details) - Stock Options shares in Thousands	6 Months Ended
	Jul. 01, 2018 $ / shares shares
Number of shares
Beginning balance (in shares) | shares	1,879
Granted (in shares) | shares	348
Exercised (in shares) | shares	(123)
Cancelled (in shares) | shares	0
Expired (in shares) | shares	(5)
Ending balance (in shares) | shares	2,099
Weighted Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 34.08
Granted (in dollars per share) | $ / shares	70.15
Exercised (in dollars per share) | $ / shares	23.58
Cancelled (in dollars per share) | $ / shares	0.00
Expired (in dollars per share) | $ / shares	20.07
Ending balance (in dollars per share) | $ / shares	$ 40.71