15. SUBSEQUENT EVENT (Details Narrative) $ in Thousands	9 Months Ended
Feb. 29, 2020 USD ($)
Subsequent Events [Abstract]
Severance payable	$ 150
Quarterly cost saving from dissolution of ATS - Japan	$ 90

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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