Earnings Per Share (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		21 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016
Earnings Per Share [Abstract]
Antidilutive options excluded from computation of earnings per share	63,915	56,997	63,915	56,997
Shares repurchased during period under share repurchase program			900,000	151,500	1,100,000
Share repurchase program, number of shares authorized to be repurchased	2,500,000		2,500,000		2,500,000
Payments for repurchase of shares under share repurchase program			$ 23,139	$ 4,921	$ 28,100