Condensed Consolidated Statements of Earnings (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Net Sales	$ 22,393,764	$ 23,968,569
Costs and expenses
Costs of goods sold	23,646,752	21,826,676
General, selling and administrative costs	1,092,750	1,353,456
Costs and expenses, total	24,739,502	23,180,132
EARNINGS (LOSS) FROM OPERATIONS	(2,345,738)	788,437
Interest and other income	(14,750)	(17,250)
EARNINGS (LOSS) BEFORE INCOME TAXES	(2,330,988)	805,687
Income tax provision (benefit):
Current	(828,613)	244,160
Deferred taxes	(41,156)	35,578
Income tax	(869,769)	279,738
NET EARNINGS (LOSS)	$ (1,461,219)	$ 525,949
Average number of common shares outstanding:
Basic (in shares)	6,799,444	6,799,444
Diluted (in shares)	6,799,444	6,799,444
Net earnings (loss) per share:
Basic (in dollars per share)	$ (0.21)	$ 0.08
Diluted (in dollars per share)	(0.21)	0.08
Cash dividends declared per common share (in dollars per share)	$ 0.01	$ 0.01