CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 3,530,353	$ 2,036,646
Accounts receivable, net	866,062	1,010,443
Contract assets	2,873,611	4,390,832
Inventories	1,201,798	1,240,315
Other current assets	419,840	498,059
Total current assets	8,891,664	9,176,295
Property, plant and equipment, net	4,680,804	4,860,609
Deferred income taxes	1,914,128	2,004,346
Other noncurrent assets, net	5,333	6,233
Total assets	15,491,929	16,047,483
Current liabilities:
Accounts payable	266,443	609,082
Accrued expenses	872,949	753,499
Contract liabilities	339,850	740,947
Current portion of long-term debt	837,844	822,105
Total current liabilities	2,317,086	2,925,633
Long-term debt	3,205,112	3,410,542
Commitments and contingent liabilities (Note 13)
Stockholders' Equity:
Common stock - par value $.0001 per share, 90,000,000 shares authorized, 29,254,594 and 29,234,594 shares issued and outstanding, at June 30, 2019 and March 31, 2019	2,925	2,923
Additional paid in capital	8,730,929	8,693,106
Accumulated other comprehensive income	21,761	21,940
Retained earnings	1,214,116	993,339
Total stockholders' equity	9,969,731	9,711,308
Total liabilities and stockholders' equity	$ 15,491,929	$ 16,047,483