Equity (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	May 04, 2013	Feb. 02, 2013	Apr. 28, 2012
Equity (Textual) [Abstract]
Redeemable price per right (USD per share)	$ 0.01
Number of common stock		1
Common stock, par value (USD per share)	$ 1	$ 1	$ 1
Common stock, shares authorized	80,000,000	80,000,000	80,000,000
Common stock, shares issued	24,333,999	24,484,915	24,981,526
Exercise of stock options	$ 159,000	$ 4,808,000
Issue shares - Employee Stock Purchase Plan	0	157,000
Common stock value repurchased and retired	1,462,000
Subordinated Serial Preferred Stock $2.30 Series 1 [Member]
Equity (Textual) [Abstract]
Preferred stock, dividend rate	$ 2.30
Conversion of stock, shares converted	13,713
Stock redeemed, shares	2,490
Subordinated Serial Preferred Stock $4.75 Series 3 [Member]
Equity (Textual) [Abstract]
Preferred stock, dividend rate	$ 4.75
Conversion of stock, shares converted	6,046
Stock redeemed, shares	1,352
Subordinated Serial Preferred Stock $4.75 Series 4 [Member]
Equity (Textual) [Abstract]
Preferred stock, dividend rate	$ 4.75
Stock redeemed, shares	3,247
Subordinated Serial Preferred Stock Series 1, 3 and 4 [Member]
Equity (Textual) [Abstract]
Preferred stock, redemption amount	600,000
Non-Redeemable Preferred Stock [Member]
Equity (Textual) [Abstract]
Tender offer for outstanding common stock	15.00%
Common stock value repurchased and retired	1,462,000
$1.50 Subordinated Cumulative Preferred Stock [Member]
Equity (Textual) [Abstract]
Preferred stock, dividend rate	$ 1.50
Stock redeemed, shares	30,067
Preferred stock, redemption amount	$ 900,000
Stated and liquidation values and redemption price per share dividend paid on common stock plus accumulated dividends	$ 30
Employees Subordinated Convertible Preferred Stock [Member]
Equity (Textual) [Abstract]
Multiplication value to Quarterly dividend per share of common stock for calculation of Stated and liquidation values and redemption price	8800.00%
Stated and liquidation values and redemption price per share dividend paid on common stock plus accumulated dividends	$ 30