REVENUE (Details 2) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Net sales	$ 15,283	$ 5,267	$ 30,540	$ 8,962
Products and Services Transferred at a Point in Time
Net sales	14,932	4,944	29,492	7,728
Services Transferred over Time
Net sales	$ 351	$ 323	$ 1,048	$ 1,234

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details