2. REVENUE RECOGNITION - Revenue disaggregated (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Net revenues	$ 4,671	$ 5,587
Contract Manufacturers
Disaggregation of Revenue [Line Items]
Net revenues	411	1,949
Distribution
Disaggregation of Revenue [Line Items]
Net revenues	4,240	3,614
OEMs
Disaggregation of Revenue [Line Items]
Net revenues	$ 20	$ 24