Quarterly report pursuant to Section 13 or 15(d)

Geographic Information (Details - Geographic regions)

v3.21.2
Geographic Information (Details - Geographic regions) - USD ($)
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Revenue from External Customer [Line Items]    
Revenues $ 3,684,000 $ 5,767,000
Product [Member]    
Revenue from External Customer [Line Items]    
Revenues 3,684,000 5,767,000
Product [Member] | Revenue, Segment Benchmark [Member] | UNITED STATES    
Revenue from External Customer [Line Items]    
Revenues 1,592,000 1,620,000
Product [Member] | Revenue, Segment Benchmark [Member] | Latin America [Member]    
Revenue from External Customer [Line Items]    
Revenues 565,000 2,327,000
Product [Member] | Revenue, Segment Benchmark [Member] | Europe [Member]    
Revenue from External Customer [Line Items]    
Revenues $ 1,527,000 $ 1,820,000