Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	4 Months Ended
	Jan. 22, 2017	Jan. 17, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired	992
Decrease in obligations for treasury stock repurchases	$ 7,208	$ 0
Common Stock, Dividends, Per Share, Declared	$ 0.40	$ 0.30
Dividends, Common Stock	$ 13,000
Expiration: November 2017 [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	27
Expiration: November 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	300,000
Treasury Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method	$ 108,100