Annual report pursuant to Section 13 and 15(d)

Geographic Information (Details - Geographic regions)

v3.22.2
Geographic Information (Details - Geographic regions) - USD ($)
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Revenues $ 12,628,000 $ 18,629,000
Product [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 12,179,000 18,517,000
Product [Member] | Revenue, Segment Benchmark [Member] | UNITED STATES    
Disaggregation of Revenue [Line Items]    
Revenues 3,807,000 5,419,000
Product [Member] | Revenue, Segment Benchmark [Member] | Latin America [Member]    
Disaggregation of Revenue [Line Items]    
Revenues 2,095,000 5,976,000
Product [Member] | Revenue, Segment Benchmark [Member] | Europe [Member]    
Disaggregation of Revenue [Line Items]    
Revenues $ 6,726,000 $ 7,234,000