COSTS INCURRED ON UNCOMPLETED CONTRACTS (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017	Sep. 30, 2017	Mar. 31, 2017
Cost incurred on uncompleted contracts
Cost incurred on uncompleted contracts, beginning balance			$ 5,538,815	$ 5,491,605	$ 5,491,605
Total cost incurred on contracts during the year			6,351,959		12,501,752
Less: cost of sales, during the year	$ (3,155,893)	$ (2,182,547)	(7,245,692)	(5,291,959)	(12,454,542)
Cost incurred on uncompleted contracts, ending balance	4,645,082		4,645,082		5,538,815
Billings on uncompleted contracts
Billings on uncompleted contracts, beginning balance			3,441,594	3,095,963	3,095,963
Total billings incurred on contracts, during the year			8,409,439		18,896,305
Less: Contracts recognized as revenue, during the year	(4,588,894)	$ (3,656,163)	(10,419,280)	(8,300,968)	(18,550,674)
Billings on uncompleted contracts, ending balance	1,431,753		1,431,753		3,441,594
Cost incurred on uncompleted contracts
Cost incurred on uncompleted contracts, ending balance	4,645,082		5,538,815	5,491,605	5,538,815	$ 4,645,082	$ 5,538,815
Billings on uncompleted contracts, ending balance	$ 1,431,753		$ 3,441,594	$ 3,095,963	$ 3,441,594	1,431,753	3,441,594
Costs incurred on uncompleted contracts, in excess of progress billings						3,213,329	2,097,221
Billings in excess of costs						$ 827,573	$ 642,831