Consolidated Balance Sheets (Parenthetical) (USD $)	Aug. 31, 2012	Feb. 29, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 16,380	$ 26,000
Accumulated depreciation	$ 2,225,636	$ 2,156,136
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	25,000,000	25,000,000
Common stock, issued shares	14,483,010	14,455,444
Common stock, outstanding shares	14,483,010	14,455,444