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2. REVENUE RECOGNITION - Revenue disaggregated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Net revenues	$ 8,065	$ 6,763	$ 24,653	$ 20,043
Contract Manufacturers
Disaggregation of Revenue [Line Items]
Net revenues	2,295	3,154	8,146	9,007
Distribution
Disaggregation of Revenue [Line Items]
Net revenues	5,668	3,586	15,877	10,692
OEMs
Disaggregation of Revenue [Line Items]
Net revenues	$ 102	$ 23	$ 630	$ 344

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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.

+ References

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