Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net Sales	$ 28,502,049	$ 28,150,817	$ 76,888,329	$ 109,121,717
Costs and expenses
Costs of goods sold	24,006,200	28,097,884	71,044,629	108,380,110
General, selling and administrative costs	1,725,143	1,200,393	4,518,785	3,662,630
Interest expense	6,148	2,463	18,356	2,463
Costs and expenses, total	25,737,491	29,300,740	75,581,770	112,045,203
EARNINGS (LOSS) FROM OPERATIONS	2,764,558	(1,149,923)	1,306,559	(2,923,486)
Interest and other income	(4,339)	(4,370)	(12,987)	(15,075)
EARNINGS (LOSS) BEFORE INCOME TAXES	2,768,897	(1,145,553)	1,319,546	(2,908,411)
Provision for (benefit from) income taxes:
Current	757,097	244,940	634,056	(49,584)
Deferred	(117,945)	(509,490)	(335,388)	(628,459)
Income tax	639,152	(264,550)	298,668	(678,043)
NET EARNINGS (LOSS)	$ 2,129,745	$ (881,003)	$ 1,020,878	$ (2,230,368)
Weighted average number of common shares outstanding:
Basic (in shares)	7,039,736	6,999,444	7,062,628	6,999,444
Diluted (in shares)	7,039,736	6,999,444	7,062,628	6,999,444
Net earnings (loss) per share:
Basic (in dollars per share)	$ 0.30	$ (0.13)	$ 0.14	$ (0.32)
Diluted (in dollars per share)	0.30	(0.13)	0.14	(0.32)
Cash dividends declared per common share (in dollars per share)	$ 0.02	$ 0.02	$ 0.06	$ 0.08