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Equity-Based Compensation (Details Textual) (USD $)
9 Months Ended 24 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Plans
Oct. 02, 2011
Dec. 31, 2011
Feb. 08, 2012
Enumerated
Feb. 03, 2011
Enumerated
Feb. 02, 2010
Enumerated
Jul. 02, 2007
Enumerated
Feb. 08, 2012
Minimum [Member]
Feb. 03, 2011
Minimum [Member]
Feb. 02, 2010
Minimum [Member]
Jul. 02, 2007
Minimum [Member]
Feb. 08, 2012
Maximum [Member]
Feb. 03, 2011
Maximum [Member]
Feb. 02, 2010
Maximum [Member]
Jul. 02, 2007
Maximum [Member]
Sep. 30, 2012
Stock Options [Member]
Minimum [Member]
Sep. 30, 2012
Stock Options [Member]
Maximum [Member]
Sep. 30, 2012
Service Based Restricted Stock Units [Member]
Oct. 02, 2011
Service Based Restricted Stock Units [Member]
Sep. 30, 2012
Service Based Restricted Stock Units [Member]
Oct. 02, 2011
Service Based Restricted Stock Units [Member]
Sep. 30, 2012
Service Based Restricted Stock Units [Member]
Minimum [Member]
Feb. 02, 2010
Performance Based Restricted Stock Units [Member]
Sep. 30, 2012
Performance Based Restricted Stock Units [Member]
Oct. 02, 2011
Performance Based Restricted Stock Units [Member]
Sep. 30, 2012
Performance Based Restricted Stock Units [Member]
Oct. 02, 2011
Performance Based Restricted Stock Units [Member]
Feb. 02, 2010
Market Based Restricted Stock Units [Member]
Jul. 02, 2012
Market Based Restricted Stock Units [Member]
Sep. 30, 2012
Market Based Restricted Stock Units [Member]
Oct. 02, 2011
Market Based Restricted Stock Units [Member]
Sep. 30, 2012
Market Based Restricted Stock Units [Member]
Oct. 02, 2011
Market Based Restricted Stock Units [Member]
Dec. 31, 2010
Market Based Restricted Stock Units [Member]
Equity-Based Compensation (Textual) [Abstract]                                                                    
Number Of Equity Based Compensation Plan 5                                                                  
Vesting period                               4 years 10 years         3 years                        
Vesting performance-based restricted stock unit               0.00% 0.00% 0.00%   200.00% 200.00% 200.00%                                        
Vesting market-based restricted stock unit               0.00% 0.00% 0.00% 0.00% 200.00% 200.00% 200.00% 150.00%                                      
Compensation expense                                   $ 553,000 $ 574,000 $ 1,802,000 $ 1,986,000     $ 229,000 $ 157,000 $ 688,000 $ 500,000     $ 228,000 $ 271,000 $ 691,000 $ 877,000  
Unrecognized compensation cost                                   2,000,000   2,000,000       807,000   807,000       555,000   555,000    
Weighted average period                                       1 year 2 months 12 days           1 year           9 months 18 days    
Earned and awarded performance and market-based restricted stock unit                                             49,320         67,130 8,334         12,500
Equity Based Compensation (Additional Textual) [Abstract]                                                                    
Intrinsic value of share options exercised 320,000 209,000                                                                
Weighted average remaining contractual life of options outstanding and options exercisable 1 year 7 months 6 days 2 years 1 month 6 days                                                                
Aggregate intrinsic values of options outstanding and options exercisable $ 167,000 $ 79,000                                                                
Target based Vesting of performance-based restricted stock unit       45,850 53,200 78,000                                                        
Target based performance-based restricted stock unit cash flow       39,300                                                            
Aggregate market-based restricted stock unit             25,000                                                      
Stockholder return rates       28 28 28 32                                                      
Target based Vesting of market-based restricted stock unit       45,850 79,800 117,000                                                        
Unvested Stock Options 0                                                                  
Units awarded     0