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TAXES (Schedule of Income Tax Examinations) (Details)
12 Months Ended
Dec. 31, 2017
Various U.S. States [Member]  
Income Tax Contingency [Line Items]  
Earliest Exam Year 2013
U.S. Federal [Member]  
Income Tax Contingency [Line Items]  
Earliest Exam Year 2014
Puerto Rico (U.S. Territory) [Member]  
Income Tax Contingency [Line Items]  
Earliest Exam Year 2012
Canada [Member]  
Income Tax Contingency [Line Items]  
Earliest Exam Year 2012