Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
OPERATING ACTIVITIES
Net earnings	$ 1,712,926	$ 6,135,812
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	1,823,072	1,790,041
Deferred taxes	(172,281)	(83,720)
Change in post-retirement benefits other than pensions	69,907	89,411
Changes in operating assets and liabilities:
Accounts receivable, net	(309,741)	7,246,829
Inventories	3,930,609	(2,465,488)
Other	(26,249)	(15,261)
Accounts payable and accrued expenses	(3,975,464)	(909,350)
Employee compensation and related expenses	(157,962)	(193,520)
Income taxes payable		(98,464)
Net cash provided by operating activities	2,894,817	11,496,290
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(1,907,231)	(499,486)
Proceeds from sales of assets		42,375
Increase in cash value of officers' life insurance	(62,000)	(62,000)
Net cash used in investing activities	(1,969,231)	(519,111)
FINANCING ACTIVITIES
Cash dividends paid	(1,767,856)	(6,935,433)
Net cash used in financing activities	(1,767,856)	(6,935,433)
Increase (decrease) in cash	(842,270)	4,041,746
Cash at beginning of year	15,923,294	11,881,548
Cash at end of year	$ 15,081,024	$ 15,923,294