BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Impact of Brazilian Real to U.S. Dollar Exchange Rate (Details) - One Brazilian real into U.S. dollars	Dec. 31, 2017	Dec. 31, 2016
Quarter To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3015	0.3073
Year To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3015	0.3073
High | Quarter To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3198	0.3207
High | Year To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3244	0.3207
Average | Quarter To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3076	0.3032
Average | Year To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3117	0.2988
Low | Quarter To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.3004	0.2866
Low | Year To Date
Schedule of Foreign Currency [Line Items]
Foreign currency exchange rates	0.2995	0.2702