7. INCOME TAXES (Details) - Taxing Authority Jurisdiction	3 Months Ended
	Jun. 30, 2017
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Taxing Authority Jurisdiction	2012
Internal Revenue Service (IRS) [Member]
Income Tax Contingency [Line Items]
Taxing Authority Jurisdiction	2013
Department Of Treasury Puerto Rico [Member]
Income Tax Contingency [Line Items]
Taxing Authority Jurisdiction	2011
Canada Revenue Agency [Member]
Income Tax Contingency [Line Items]
Taxing Authority Jurisdiction	2011