11. EMPLOYEE BENEFIT PLANS (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2017
Employee Benefit and Share-based Payment Arrangement, Noncash Expense [Abstract]
Contributions to ESOP	$ 60	$ 60	$ 60
Shares contributed to the ESOP for fiscal year (in thousands)	23	13	59