11. EMPLOYEE BENEFIT PLANS (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2018	May 31, 2017	May 31, 2016
Employee Benefits and Share-based Compensation, Noncash [Abstract]
Contributions to ESOP	$ 60	$ 60	$ 60
Shares contributed to the ESOP for fiscal year	13,000	59,000	25,000