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Preferred Stock Purchase Rights (Details) (USD $)
1 Months Ended
May 25, 1999
Feb. 01, 2014
Feb. 02, 2013
May 24, 1999
Feb. 01, 2014
Common Class A
Feb. 02, 2013
Common Class A
Jul. 16, 1998
Common Class A
Class of Warrant or Right [Line Items]              
Dividend declared of Series A Participating Cumulative Preferred Stock Purchase Right per share of Class A Common Stock (in rights per share)             1
Common stock, par value (in dollars per share)   $ 0.01 $ 0.01   $ 0.01 $ 0.01  
Stock split, conversion ratio 2            
Number of rights attached to common stock (in rights)   0.50   1