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Debt (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 07, 2017
Dec. 07, 2016
Feb. 03, 2018
Feb. 03, 2018
Jan. 28, 2017
Aug. 17, 2017
Oct. 13, 2015
Jan. 10, 2014
Sep. 12, 2012
Sep. 04, 2012
Debt                    
Exercise price of warrants $ 2.25   $ 3.81 $ 3.81 $ 10.00 $ 4.22        
Warrants issued to purchase shares of common stock 511,111   977,806 977,806 120,000 326,695        
Junior Participation Interest Acquired $ 11,500                  
Term Note | 2014 Term Note                    
Debt                    
Principal amount               $ 19,000    
Term Note | 2012 Term Note                    
Debt                    
Principal amount                   $ 16,600
Term Note | 2015 Term Note                    
Debt                    
Principal amount             $ 6,000      
Revolver                    
Debt                    
Maximum borrowing capacity                 $ 2,000  
Cerberus Credit Facility                    
Debt                    
Debt Instrument, Interest Rate, Stated Percentage     11.00% 11.00%            
Exercise price of warrants     $ 2.25 $ 2.25            
Warrants issued to purchase shares of common stock     511,111 511,111            
Junior Participation Interest Acquired       $ 10,000            
Cerberus Credit Facility | Term Note                    
Debt                    
Maximum borrowing capacity   $ 45,000                
Line of Credit Facility, Maximum Amount Outstanding During Period       49,500 $ 44,600          
Unamortized deferred financing costs     $ 3,400 3,400 $ 3,700          
Cerberus Credit Facility | Revolver                    
Debt                    
Maximum borrowing capacity   $ 5,000                
Ravich                    
Debt                    
Line of Credit Facility, Maximum Amount Outstanding During Period     $ 1,500              
Debt Instrument, Interest Rate, Stated Percentage   9.50%                
Debt Instrument, Fee Rate   2.50%                
Related Party Junior Participation       $ 1,500            
Hi-Tech | Ravich                    
Debt                    
Unsecured Debt   $ 5,000