Earnings Per Share (Narrative) (Details) - shares	3 Months Ended		9 Months Ended		33 Months Ended
	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017
Earnings Per Share [Abstract]
Antidilutive options excluded from computation of earnings per share	16,667	63,915	16,667	63,915
Shares repurchased during period under share repurchase program	0	0	225,000	900,000	1,300,000
Share repurchase program, number of shares authorized to be repurchased	2,500,000		2,500,000		2,500,000