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Consolidated Balance Sheets (Parenthetical) (USD $)
Aug. 31, 2011
Feb. 28, 2011
Statement of Financial Position [Abstract]  
Less allowance$ 32,000$ 26,000
Less accumulated depreciation$ 1,947,089$ 1,834,560
Common stock, par value$ 0.01$ 0.01
Common stock, authorized25,000,00025,000,000
Common stock, issued shares14,442,21114,437,511
Common stock, outstanding shares14,442,21114,437,511