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SUBSEQUENT EVENTS (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 26, 2016
$ / shares
Apr. 28, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
franchise
country
franchisee
$ / shares
Dec. 31, 2015
USD ($)
Mar. 31, 2015
USD ($)
$ / shares
Subsequent Event            
Dividends declared per share (in dollars per share) | $ / shares       $ 0.2   $ 0.18
Gains on refranchising       $ 1,015   $ 338
Number of international countries in which franchise stores are located (more than 50 countries) | country       50    
Subsequent Event            
Subsequent Event            
Dividends declared per share (in dollars per share) | $ / shares $ 0.20          
Disposal Group, Held-for-sale, Not Discontinued Operations            
Subsequent Event            
Gains on refranchising       $ 1,000 $ 300  
Disposal Group, Held-for-sale, Not Discontinued Operations | Company Owned Stores            
Subsequent Event            
Number of franchises | franchise       94    
Number of franchisees purchasing company owned stores | franchisee       2    
Forecast | Disposal Group, Held-for-sale, Not Discontinued Operations            
Subsequent Event            
Gains on refranchising   $ 20,000 $ 20,000