Earnings Per Share Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 29, 2017	Apr. 30, 2016
Earnings Per Share [Abstract]
Net Income	$ 66,302	$ 77,431
Weighted Average Number of Shares Outstanding, Basic and Diluted	31,257,000	35,652,000
Earnings Per Share, Basic and Diluted	$ 2.12	$ 2.17
Diluted:
Total dilutive and potentially dilutive securities outstanding (in shares)	0