3. EARNINGS PER SHARE (Details Narrative) - shares	3 Months Ended
	Aug. 31, 2017	Aug. 31, 2016
Employee Stock Purchase Plan
Options not included in the computation of diluted net income (loss) per share (in thousands)		304
Convertible Notes
Options not included in the computation of diluted net income (loss) per share (in thousands)	2,657	2,657
Stock Options
Options not included in the computation of diluted net income (loss) per share (in thousands)	140	3,382
Restricted Stock Units
Options not included in the computation of diluted net income (loss) per share (in thousands)		74