Schedule II - Valuation And Qualifying Accounts (Detail) - Valuation and Qualifying Accounts (USD $)	12 Months Ended
Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Valuation Allowance for Accounts and Notes Receivable	$ 584,151	$ 390,319	$ 395,291
Valuation Allowance for Accounts and Notes Receivable	330,000	352,000	195,000
Valuation Allowance for Accounts and Notes Receivable	318,563	158,168	199,972
Valuation Allowance for Accounts and Notes Receivable	$ 595,588	$ 584,151	$ 390,319

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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