• Filing Date: 2019-02-19
  • Form Type: 10-Q
  • Description: Quarterly report
v3.10.0.1
Note 5 - Disaggregated Revenues and Segment Information - Summary of Segment Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Mar. 31, 2018
Revenue from external customers $ 739,538 $ 1,021,042 $ 2,351,201 $ 3,098,536  
Segment operating income (219,922) 83,775 (116,371) 164,351  
Total assets 4,621,517   4,621,517   $ 4,552,134
Chemical [Member]          
Revenue from external customers 281,431 432,802 1,068,299 1,051,915  
Segment operating income (70,274) 2,086 89,456 88,622  
Total assets 2,099,847   2,099,847   1,687,276
Electronics [Member]          
Revenue from external customers 181,779 123,685 430,486 960,442  
Segment operating income (166,740) (34,788) (313,649) (111,864)  
Total assets 846,163   846,163   1,280,908
Engineering [Member]          
Revenue from external customers 276,328 464,555 852,416 1,086,179  
Segment operating income 17,092 $ 11,477 107,822 $ 187,593  
Total assets $ 1,675,507   $ 1,675,507   $ 1,583,950