CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
6 Months Ended
Aug. 31, 2015
Aug. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: $ 927,800 $ (2,429,500)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (397,300) (114,300)
Net cash used in investing activities (397,300) (114,300)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Cash paid to acquire treasury stock (200) (4,400)
Cash received from sales of treasury stock 92,900 85,500
Borrowings under revolving credit agreement 1,550,000 2,900,000
Payments under revolving credit agreement (1,600,000) (400,000)
Dividends paid (645,000) (637,400)
Net cash (used in) provided by financing activities (602,300) 1,943,700
NET DECREASE IN CASH AND CASH EQUIVALENTS (71,800) (600,100)
CASH AND CASH EQUIVALENTS—BEGINNING OF PERIOD 383,900 680,000
CASH AND CASH EQUIVALENTS—END OF PERIOD 312,100 79,900
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:    
Cash paid for interest 43,400 20,000
Cash paid for income taxes $ 366,600 $ 326,500