Shareholders' Equity (Details) - $ / shares							12 Months Ended
	Jan. 26, 2017	Oct. 27, 2016	Jul. 28, 2016	Apr. 27, 2016	Jan. 28, 2016	Apr. 02, 2013	Dec. 31, 2014	Dec. 31, 2016
Class of Stock [Line Items]
Preferred Stock Converted Into Common Stock, Shares								102,363
Declared quarterly cash dividend		$ 0.20	$ 0.20	$ 0.19	$ 0.18
Special Dividends Payable, Amount Per Share		$ 0.19	$ 0.19	$ 0.18	$ 0.20
Subsequent Event [Member]
Class of Stock [Line Items]
Declared quarterly cash dividend	$ 0.22
Preferred Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues						8,782	0