9. SEGMENTED INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)
9. SEGMENTED INFORMATION (Details) [Line Items]
Number of Operating Segments			1
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
UNITED STATES
9. SEGMENTED INFORMATION (Details) [Line Items]
Concentration Risk, Percentage	73.00%	69.00%	72.00%	73.00%
Geographic Concentration Risk [Member] | UNITED STATES
9. SEGMENTED INFORMATION (Details) [Line Items]
Concentration Risk, Percentage	73.00%	69.00%	72.00%	73.00%
Supplier Concentration Risk [Member]
9. SEGMENTED INFORMATION (Details) [Line Items]
Accounts Payable and Accrued Liabilities (in Dollars)	$ 5,257	$ 6,916	$ 5,257	$ 6,916