Stockholders' Equity Repurchases of Common Stock (Details) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended	6 Months Ended
	Aug. 01, 2018	Jul. 01, 2018	Jul. 02, 2017	Feb. 15, 2018	Feb. 22, 2017
Subsequent Event
Equity, Class of Treasury Stock
Treasury Stock, Shares, Acquired	1,129
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions	$ 19,395
Stock Repurchase Program, Cost Incurred	$ 16
$175,000 Share Repurch Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount				$ 175,000
Treasury Stock, Shares, Acquired		3,675
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions		$ 62,490
Stock Repurchase Program, Repurchase Accrual		2,146
Stock Repurchase Program, Cost Incurred		52
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 112,510
$150,000 Share Repurchase Program
Equity, Class of Treasury Stock
Stock Repurchase Program, Authorized Amount					$ 150,000
Treasury Stock, Shares, Acquired		1,385	3,611
Treasury Stock, Value, Acquired, Cost Method, excluding Commissions		$ 22,633	$ 52,448
Stock Repurchase Program, Repurchase Accrual			1,974
Stock Repurchase Program, Cost Incurred		$ 19	$ 53