General form of registration statement for all companies including face-amount certificate companies

9. Segment and Geographic Information (June 2018 Note) (Details)

v3.10.0.1
9. Segment and Geographic Information (June 2018 Note) (Details) - USD ($)
3 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Revenues $ 4,369,000 $ 3,835,000 $ 16,658,000 $ 12,825,000
Product [Member]        
Revenues 4,095,000 3,603,000 $ 15,663,000 $ 11,957,000
Product [Member] | UNITED STATES        
Revenues 1,971,000 1,859,000    
Product [Member] | Latin America [Member]        
Revenues 1,079,000 569,000    
Product [Member] | Europe and Rest of the World [Member]        
Revenues $ 1,045,000 $ 1,175,000