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Stock Compensation (Details) (USD $)
12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 30, 2011
Dec. 31, 2013
Common Class A
Dec. 31, 2012
Common Class A
Dec. 31, 2013
Restricted Stock
Dec. 31, 2013
Restricted Stock
Common Class A
Dec. 31, 2012
Restricted Stock
Common Class A
Sep. 24, 2009
Restricted Stock
Common Class A
Dec. 31, 2013
Restricted Stock and Restricted Stock Units
Dec. 31, 2013
Restricted Stock and Restricted Stock Units
Selling, General and Administrative Expenses
Dec. 31, 2012
Restricted Stock and Restricted Stock Units
Selling, General and Administrative Expenses
Dec. 30, 2011
Restricted Stock and Restricted Stock Units
Selling, General and Administrative Expenses
Dec. 31, 2013
Restricted Stock and Restricted Stock Units
Common Class A
Dec. 31, 2012
Restricted Stock and Restricted Stock Units
Common Class A
Dec. 30, 2011
Restricted Stock and Restricted Stock Units
Common Class A
Dec. 31, 2013
Restricted Stock Units (RSUs)
Common Class A
Dec. 31, 2012
Restricted Stock Units (RSUs)
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Common stock, capital shares reserved for future issuance                 21,737                  
Restricted Stock Award and Restricted Stock Units [Roll Forward]                                    
Outstanding at December 31, 2012                           6,350        
Granted             1,600 800           2,100     500 400
Vested                           (4,227)        
Forfeited                           (1,548)        
Outstanding at December 31, 2013                           2,675 6,350      
Restricted Stock Award and Restricted Stock Units Weighted Average [Roll Forward]                                    
Outstanding at December 31, 2012                           $ 658        
Granted                           $ 453 $ 784 $ 577    
Vested                           $ 645        
Forfeited                           $ 668        
Outstanding at Decemver 31, 2013                           $ 512 $ 658      
Vesting period                   4 years                
Share-based compensation $ 2,208,000 $ 3,036,000 $ 3,050,000               $ 2,200,000 $ 3,000,000 $ 3,000,000          
Fair value inputs, discount rate       11.00% 10.25%                          
Fair value inputs, discount for lack of marketability       25.00%                            
Minority interest discount       20.00%                            
Unrecognized stock based compensation cost           $ 1,000,000                        
Unrecognized stock based compensation, period for recognition           3 years