Earnings Per Share (Narrative) (Details) - shares	3 Months Ended		6 Months Ended		30 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017
Earnings Per Share [Abstract]
Antidilutive options excluded from computation of earnings per share	16,667	66,165	16,667	66,165
Shares repurchased during period under share repurchase program	0	450,000	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