Balance Sheets (Parenthetical) - $ / shares	Feb. 28, 2021	Feb. 29, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ .01	$ 0.01
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ .01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares outstanding	2,083,462	2,062,949
Treasury stock, shares	487,801	508,314