Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Aug. 31, 2016	Feb. 29, 2016
Series A Preferred Stock [Member]
Preferred stock, shares authorized (in shares)	50,000	50,000
Undesignated Series [Member]
Preferred stock, shares authorized (in shares)	200,000	200,000
Accounts receivable, allowance for doubtful accounts	$ 590,976	$ 595,471
Note receivable, current portion of valuable allowance	41,505	0
Inventories, reserve	299,011	261,346
Notes receivable, valuation allowance
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	250,000	250,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	46,000,000	46,000,000
Common stock, shares issued (in shares)	5,889,480	5,839,396
Common stock, shares outstanding (in shares)	5,854,372	5,839,396
Treasury stock, shares (in shares)	35,108	0