Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended						6 Months Ended
	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Jan. 01, 2017	Oct. 02, 2016	Jul. 03, 2016	Jul. 02, 2017	Jul. 27, 2016
Schedule of Shareholders' Equity [Line Items]
Stock repurchase program, number of shares authorized to be repurchased								8,000,000
Number of common stock repurchased in open market							0
Stock repurchase program, number of shares remained available for repurchase		8,000,000					8,000,000
Repurchased Common Shares For Activity Pursuant to Equity Incentive Plans		7,591					70,540
Aggregate Cost of Repurchased Common Shares for Activity Pursuant to Equity Incentive Plans		$ 0.5					$ 3.8
Cash dividends (per share)		$ 0.07	$ 0.07	$ 0.07	$ 0.07	$ 0.07
Dividends Payable, Amount		$ 7.7					$ 7.7
Dividends Payable, Date Declared		Apr. 28, 2017
Dividends Payable, Date to be Paid							Aug. 10, 2017
Subsequent Event [Member]
Schedule of Shareholders' Equity [Line Items]
Cash dividends (per share)	$ 0.07
Dividends Payable, Date Declared	Jul. 24, 2017
Dividends Payable, Date to be Paid	Nov. 10, 2017