CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2020	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 930,856	$ 2,036,646
Accounts receivable, net	990,300	1,010,443
Contract assets	4,504,621	4,390,832
Inventories	1,217,613	1,240,315
Other current assets	606,151	498,059
Total current assets	8,249,541	9,176,295
Property, plant and equipment, net	4,182,861	4,860,609
Deferred income taxes	2,115,480	2,004,346
Other noncurrent assets, net	32,600	6,233
Total assets	14,580,482	16,047,483
Current liabilities:
Accounts payable	185,065	609,082
Accrued expenses	1,554,524	753,499
Contract liabilities	805,049	740,947
Current portion of long-term debt	109,829	822,105
Total current liabilities	2,654,467	2,925,633
Long-term debt, including finance lease	2,456,560	3,410,542
Commitments and contingent liabilities (see Note 14)
Stockholders' Equity:
Common stock - par value $.0001 per share, 90,000,000 shares authorized, 29,354,594 and 29,234,594 shares issued and outstanding at March 31, 2020 and 2019	2,935	2,923
Additional paid in capital	8,793,062	8,693,106
Accumulated other comprehensive income	21,688	21,940
Retained earnings	651,770	993,339
Total stockholders' equity	9,469,455	9,711,308
Total liabilities and stockholders' equity	$ 14,580,482	$ 16,047,483