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7. INCOME TAXES (Tables)
3 Months Ended
Jun. 30, 2017
Income Tax Disclosure [Abstract]  
Summary of Income Tax Contingencies [Table Text Block]
  Earliest Exam Year
     
Taxing Authority Jurisdiction:    
U.S. Federal
  2013
Various U.S. States   2012
Puerto Rico (U.S. Territory)   2011
Canada   2011