CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,130,711	$ 930,856
Accounts receivable	608,059	990,300
Contract assets	5,532,408	4,504,621
Raw materials	503,636	561,572
Work-in-process	767,520	656,041
Other current assets	379,437	606,151
Total current assets	9,921,771	8,249,541
Property, plant and equipment, net	4,063,209	4,182,861
Deferred income taxes	1,934,415	2,115,480
Other noncurrent assets, net	84,624	32,600
Total assets	16,004,019	14,580,482
Current liabilities:
Accounts payable	500,848	185,065
Accrued expenses	1,526,270	1,554,524
Contract liabilities	218,152	805,049
Current portion of long-term debt	2,474,963	109,829
Total current liabilities	4,720,233	2,654,467
Long-term debt, including finance lease	1,341,938	2,456,560
Commitments and contingent liabilities (see Note 14)
Stockholders' Equity:
Common stock - par value $.0001 per share, 90,000,000 shares authorized, 29,498,662 and 29,354,594 shares issued and outstanding at March 31, 2021 and 2020	2,949	2,935
Additional paid in capital	8,944,660	8,793,062
Accumulated other comprehensive income	21,838	21,688
Retained earnings	972,401	651,770
Total stockholders' equity	9,941,848	9,469,455
Total liabilities and stockholders' equity	$ 16,004,019	$ 14,580,482