Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)	Nov. 30, 2014	Feb. 28, 2014
Accounts receivable, allowance for doubtful accounts	$ 702,994	$ 543,683
Current portion of the valuation allowance	5,962	33,047
Inventories, reserve	207,186us-gaap_InventoryValuationReserves	204,068us-gaap_InventoryValuationReserves
Notes receivable, valuation allowance	$ 41,300	$ 24,200
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	250,000us-gaap_PreferredStockSharesAuthorized	250,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued (in shares)	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding (in shares)	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in dollars per share)	$ 0.03	$ 0.03
Common stock, shares authorized (in shares)	100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares)	6,104,394us-gaap_CommonStockSharesIssued	6,140,200us-gaap_CommonStockSharesIssued
Common stock, shares outstanding (in shares)	6,104,394us-gaap_CommonStockSharesOutstanding	6,140,200us-gaap_CommonStockSharesOutstanding
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

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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