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Schedule II - Valuation and Qualifying Accounts (Details) - Valuation and Qualifying Accounts (USD $)
12 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Valuation and Qualifying Accounts [Abstract]      
Valuation Allowance for Accounts and Notes Receivable Beginning Balance $ 595,588 $ 584,151 $ 390,319
Valuation Allowances And Reserves Charged To Cost And Expense 216,000 330,000 352,000
Valuation Allowances And Reserves Deductions 210,658 318,563 158,168
Valuation Allowance for Accounts and Notes Receivable Ending Balance $ 600,930 $ 595,588 $ 584,151