CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)	3 Months Ended
	May. 31, 2015	May. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:	$ 82,800	$ (484,200)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(118,900)	(87,100)
Net cash used in investing activities	(118,900)	(87,100)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash paid to acquire treasury stock	(200)	(4,400)
Cash received from sales of treasury stock	45,800	42,300
Borrowings under revolving credit agreement	300,000	475,000
Payments under revolving credit agreement	0	0
Dividends paid	(322,000)	(318,200)
Net cash provided by financing activities	23,600	194,700
NET DECREASE IN CASH AND CASH EQUIVALENTS	(12,500)	(376,600)
CASH AND CASH EQUIVALENTS—BEGINNING OF PERIOD	383,900	680,000
CASH AND CASH EQUIVALENTS—END OF PERIOD	371,400	303,400
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	15,800	1,300
Cash paid for income taxes	$ 71,500	$ 205,700