CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2019	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,968,405	$ 2,036,646
Accounts receivable	752,984	1,010,443
Contract assets	3,800,928	4,390,832
Inventories	1,512,082	1,240,315
Other current assets	794,387	498,059
Total current assets	8,828,786	9,176,295
Property, plant and equipment, net	4,347,796	4,860,609
Deferred income taxes	2,119,439	2,004,346
Other noncurrent assets, net	43,913	6,233
Total assets	15,339,934	16,047,483
Current liabilities:
Accounts payable	470,619	609,082
Accrued expenses	981,255	753,499
Contract liabilities	828,762	740,947
Current portion of long-term debt	1,167,518	822,105
Total current liabilities	3,448,154	2,925,633
Long-term debt	2,481,948	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 December 31, 2019 and March 31, 2019	2,925	2,923
Additional paid in capital	8,781,971	8,693,106
Accumulated other comprehensive income	21,611	21,940
Retained earnings	603,325	993,339
Total stockholders' equity	9,409,832	9,711,308
Total liabilities and stockholders' equity	$ 15,339,934	$ 16,047,483