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BASIS OF PRESENTATION (Details 2)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Income tax          
Statutory federal income tax rate (as a percent)         35.00%
Effective tax rate (as a percent) 33.90% 36.90% 34.30% 38.30%  
Guyana
          
Income tax          
Statutory federal income tax rate (as a percent)         45.00%