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Restricted Stock Non-Vested Restricted Stock Table (Details) (USD $)
0 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Jun. 14, 2012
Nov. 30, 2011
Jun. 30, 2011
Apr. 30, 2011
Jul. 28, 2012
Jul. 30, 2011
Jul. 28, 2012
Jul. 30, 2011
Jun. 13, 2012
Employees
Nov. 18, 2011
Jun. 15, 2011
Employees
Mar. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share-based compensation             $ 1,677,000 $ 2,175,000        
Restricted Stock [Member]
                       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Share-based compensation 50,000       347,000 453,000 1,012,000 607,000        
Share Based Compensation Arrangement by Share Based Payment Award Number of Non Management Board Members Granted Shares                 6   7  
Share Based Compensation Arrangement by Share Based Payment Award Equity Intstrument Other than Options Aggregate Value                 $ 85,000 $ 816,000 $ 377,000 $ 3,323,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]                        
Non-vested outstanding, January 28, 2012             982,000          
Granted   453,000 50,000 522,000     50,000          
Vested             (298,000)          
Forfeited             (57,000)          
Non-vested outstanding, April 28, 2012         677,000   677,000          
Share-based Compensation Arrangement by Share based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]                        
Non-vested outstanding, Weighted Average Grant Date Fair Value, January 28, 2012             $ 4.39          
Granted, Weighted Average Grant Date Fair Value             $ 1.70          
Vested, Weighted Average Grant Date Fair Value             $ 6.52          
Forfeited, Weighted Average Grant Date Fair Value             $ 2.89          
Non-vested outstanding, Weighted Average Grant Date Fair Value, April 28, 2012         $ 3.39   $ 3.39