Condensed Consolidated Statements of Earnings (USD $)	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Net Sales	$ 27,904,521	$ 29,582,144
Costs and expenses
Costs of goods sold	26,862,460	27,138,300
General, selling and administrative costs	1,134,576	1,304,900
Costs and Expenses, Total	27,997,036	28,443,200
Interest and other income	(15,252)	(15,506)
Earnings (loss) before income taxes	(77,263)	1,154,450
Income tax provision (benefit):
Current	78,435	448,936
Deferred	(37,448)	(102,845)
Income Tax Expense (Benefit), Total	40,987	346,091
Net earnings (loss)	$ (118,250)	$ 808,359
Average number of common shares outstanding:
Basic	6,799,444	6,799,444
Diluted	6,799,444	6,799,444
Net earnings (loss) per share:
Basic	$ (0.02)	$ 0.12
Diluted	$ (0.02)	$ 0.12
Cash dividends declared per common share	$ 0.02	$ 0.08