• Filing Date: 2016-11-17
  • Form Type: 10-Q
  • Description: Quarterly report
v3.5.0.2
Note 5 - Segment Information - Summary of Segment Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Mar. 31, 2016
Chemical [Member]          
Revenue from external customers $ 363,364 $ 385,072 $ 654,848 $ 751,016  
Segment operating income 102,390 (141,767) 101,215 59,133  
Total assets 985,216   985,216   $ 1,070,944
Electronics [Member]          
Revenue from external customers 370,450 202,374 937,073 377,603  
Segment operating income 98,388 (62,222) 378,958 (46,554)  
Total assets 1,409,822   1,409,822   644,189
Engineering [Member]          
Revenue from external customers 646,524 665,435 1,165,848 1,180,190  
Segment operating income 227,685 (143,926) 469,334 74,050  
Total assets 1,754,016   1,754,016   1,707,413
Revenue from external customers 1,380,338 1,252,881 2,757,769 2,308,809  
Segment operating income 428,463 $ (347,915) 949,507 $ 86,629  
Total assets $ 4,149,054   $ 4,149,054   $ 3,422,546