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CAPITAL STOCK AND SHARE-BASED COMPENSATION (Performance Share Units) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended 36 Months Ended
Jan. 28, 2015
Jan. 11, 2015
Jan. 12, 2014
Jan. 08, 2014
Mar. 22, 2013
Jan. 13, 2013
Jan. 09, 2013
Dec. 31, 2015
Jan. 01, 2015
Dec. 26, 2013
Jan. 12, 2014
Jan. 13, 2013
Jan. 08, 2015
Share-Based Compensation                          
Recognized share-based compensation               $ 8.3 $ 9.4 $ 9.3      
Officers and key employees | 2009 Performance Agreement | Class A common stock | Minimum                          
Share-Based Compensation                          
Percentage of target numbers of common stock, low end of the range         0.00%                
Officers and key employees | 2009 Performance Agreement | Class A common stock | Maximum                          
Share-Based Compensation                          
Percentage of target numbers of common stock, low end of the range         150.00%                
Performance Share Units                          
Share-Based Compensation                          
Granted during the year (in shares)               234,177 226,471 293,961      
Fair market value at time of grant               $ 18.5          
Expected term, high end of the range (in years)               4 years          
Recognized share-based compensation               $ 4.3 $ 5.4 $ 4.7      
Unrecognized share-based compensation               $ 5.7          
Performance shares converted to shares of restricted common stock               306,696 330,750 273,719      
Dividends paid on performance shares               $ 1.4     $ 1.2 $ 1.3  
Additional shares of restricted stock that could be issued               300,000          
Performance Share Units | Maximum                          
Share-Based Compensation                          
Forfeiture rate (as a percent)               8.00%          
Performance Share Units | Officers and key employees                          
Share-Based Compensation                          
Granted during the year (in shares) 234,177     226,471     293,961            
Restricted Stock                          
Share-Based Compensation                          
Granted during the year (in shares) 228,116     227,447     297,866 228,116 227,447 297,866      
Recognized share-based compensation               $ 4.0 $ 4.0 $ 4.6      
Unrecognized share-based compensation               $ 4.3          
Performance shares converted to shares of restricted common stock   306,696 330,750     273,719              
Cash dividends (in dollars per share)               $ 0.22          
Dividends paid on performance shares               $ 0.7          
Restricted Stock | Maximum                          
Share-Based Compensation                          
Forfeiture rate (as a percent)               4.00%          
Restricted Stock | Class A common stock                          
Share-Based Compensation                          
Closing price of common stock (in dollars per share)       $ 19.08     $ 14.19           $ 20.99
Restricted Stock | Class A common stock | Maximum                          
Share-Based Compensation                          
Closing price of common stock (in dollars per share) $ 20.99     $ 19.08     $ 14.19            
Dividend Period One | Performance Share Units                          
Share-Based Compensation                          
Cash dividends (in dollars per share)               $ 4.56          
Dividend Period Two | Performance Share Units                          
Share-Based Compensation                          
Cash dividends (in dollars per share)               $ 4.58