Quarterly report pursuant to Section 13 or 15(d)

Geographic Information (Details - Geographic regions)

v3.21.2
Geographic Information (Details - Geographic regions) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Revenue from External Customer [Line Items]        
Revenues $ 3,744 $ 5,769 $ 7,428 $ 11,536
Product [Member]        
Revenue from External Customer [Line Items]        
Revenues 3,744 5,769 7,428 11,536
Product [Member] | Revenue, Segment Benchmark [Member] | UNITED STATES        
Revenue from External Customer [Line Items]        
Revenues 1,347 1,984 2,939 3,605
Product [Member] | Revenue, Segment Benchmark [Member] | Latin America [Member]        
Revenue from External Customer [Line Items]        
Revenues 518 2,024 1,083 4,350
Product [Member] | Revenue, Segment Benchmark [Member] | Europe [Member]        
Revenue from External Customer [Line Items]        
Revenues $ 1,879 $ 1,761 $ 3,406 $ 3,581