REVENUE - Disaggregated basis (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue from Contract with Customer, Including Assessed Tax	$ 3,074,076	$ 3,621,185	$ 7,408,344	$ 7,720,008
Over-time
Revenue from Contract with Customer, Including Assessed Tax	2,612,089	3,389,209	5,665,028	7,228,136
Point-in-time
Revenue from Contract with Customer, Including Assessed Tax	461,987	231,976	1,743,316	491,872
Defense
Revenue from Contract with Customer, Including Assessed Tax	2,862,936	3,336,930	6,524,964	7,310,910
Energy
Revenue from Contract with Customer, Including Assessed Tax	68,628	139,267	77,557	235,804
Industrial
Revenue from Contract with Customer, Including Assessed Tax	$ 142,512	$ 144,988	$ 805,823	$ 173,294