Condensed Consolidated Statements of Operations - Unaudited - USD ($)	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Net Sales	$ 23,083,269	$ 22,393,764
Costs and expenses
Costs of goods sold	21,819,846	23,646,752
General, selling and administrative costs	1,038,394	1,092,750
Costs and expenses, total	22,858,240	24,739,502
EARNINGS (LOSS) FROM OPERATIONS	225,029	(2,345,738)
Interest and other income	(4,375)	(14,750)
EARNINGS (LOSS) BEFORE INCOME TAXES	229,404	(2,330,988)
Income tax provision (benefit):
Current		(828,613)
Deferred	58,784	(41,156)
Income tax	58,784	(869,769)
NET EARNINGS (LOSS)	$ 170,620	$ (1,461,219)
Average number of common shares outstanding:
Basic (in shares)	7,009,444	6,799,444
Diluted (in shares)	7,009,444	6,799,444
Net earnings (loss) per share:
Basic (in dollars per share)	$ 0.02	$ (0.21)
Earnings Per Share, Diluted	0.02	(0.21)
Cash dividends declared per common share (in dollars per share)	$ 0.01	$ 0.01