v3.8.0.1
RESTRICTED CASH AND MARKETING FUND (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 01, 2017
Jan. 01, 2017
Restricted Cash And Cash Equivalents Items [Line Items]    
Restricted Cash And Cash Equivalents $ 1,721 $ 1,714
Franchisee Marketing Fund Contribution Rate 1.00%  
Public Relations and Marketing Development Fund [Member]    
Restricted Cash And Cash Equivalents Items [Line Items]    
Restricted Cash And Cash Equivalents $ 1,200 946
Cash Restricted for Letters of Credit [Member]    
Restricted Cash And Cash Equivalents Items [Line Items]    
Restricted Cash And Cash Equivalents $ 557 $ 768