Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING ACTIVITIES
Net earnings	$ 6,135,812	$ 8,150,464
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	1,790,041	1,839,890
Deferred taxes	(83,720)	(90,700)
Change in post-retirement benefits other than pensions	89,411	76,195
Changes in operating assets and liabilities:
Accounts receivable, net	7,246,829	(3,689,423)
Inventories	(2,465,488)	(2,074,410)
Other	(15,261)	(10,456)
Accounts payable and accrued expenses	(909,350)	4,752,392
Contribution to profit sharing plan		2,500
Employee compensation and related expenses	(193,520)	(252,371)
Income taxes payable	(98,464)	(252,497)
Net cash provided by operating activities	11,496,290	8,451,584
INVESTING ACTIVITIES
Purchase of property, plant and equipment	(499,486)	(321,403)
Proceeds from sales of assets	42,375	1,800
Increase in cash value of officers' life insurance	(62,000)	(61,000)
Net cash used in investing activities	(519,111)	(380,603)
FINANCING ACTIVITIES
Cash dividends paid	(6,935,433)	(3,399,723)
Net cash used in financing activities	(6,935,433)	(3,399,723)
Increase in cash	4,041,746	4,671,258
Cash at beginning of year	11,881,548	7,210,290
Cash at end of year	$ 15,923,294	$ 11,881,548