Earnings Per Share - Calculation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2015	Nov. 01, 2014	Oct. 31, 2015	Nov. 01, 2014
Summary of basic and diluted earnings per share
Earnings from continuing operations	$ 32,855	$ 28,750	$ 50,393	$ 47,616
Basic EPS from continuing operations
Income available to common shareholders, Income (Numerator)	$ 32,855	$ 28,750	$ 50,393	$ 47,616
Income available to common shareholders, Shares (Denominator)	22,834,000	23,602,000	23,308,000	23,489,000
Income available to common shareholders, Per Share Amount (usd per share)	$ 1.44	$ 1.22	$ 2.16	$ 2.03
Effect of Dilutive Securities from continuing operations
Dilutive share-based awards, Shares (Denominator)	39,000	113,000	84,000	156,000
Employees' preferred stock, Shares (Denominator)	44,000	45,000	44,000	46,000
Diluted EPS from continuing operations
Income available to common shareholders plus assumed conversions, Income (Numerator)	$ 32,855	$ 28,750	$ 50,393	$ 47,616
Income available to common shareholders plus assumed conversions, Shares (Denominator)	22,917,000	23,760,000	23,436,000	23,691,000
Income available to common shareholders plus assumed conversions, Per-Share Amount (usd per share)	$ 1.43	$ 1.21	$ 2.15	$ 2.01
Common convertible ratio	1	1	1	1