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Property, Plant and Equipment: Schedule of Property, Plant and Equipment (Tables)
9 Months Ended
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2018
Tables/Schedules      
Schedule of Property, Plant and Equipment 4,751 4,727

(in thousands)

December 31, 2018

(unaudited)

March 31, 2018

Land

   $                  500 

   $                     500 

Building

                    2,705 

                       2,705 

Machinery, equipment and tooling

                    1,248 

                       1,224 

Furniture, fixtures and office equipment

                       285 

                          285 

Office equipment under capital lease

                         13 

                            13 

                    4,751 

                       4,727 

Less:  accumulated depreciation

                     2,946

                        2,904

 

   $              1,805 

   $              1,823