Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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

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-Publisher SEC

-Name Regulation S-X (SX)

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-Section 02

-Paragraph 1

-Article 5

+ Details

Concentrations of Risk (Details) (USD $)	Aug. 31, 2012	Feb. 29, 2012	Aug. 31, 2011	Feb. 28, 2011
Concentrations of Risk (Textual) [Abstract]
Cash in bank accounts	$ 13,205,000	$ 10,410,000	$ 14,307,000	$ 12,305,000
Concentrations of Risk (Additional Textual) [Abstract]
Minimum Insurance available to depositors under the FDIC's general deposit insurance rules	250,000
Canadian bank [Member]
Concentrations of Risk (Textual) [Abstract]
Cash in bank accounts	400,000
Mexican bank [Member]
Concentrations of Risk (Textual) [Abstract]
Cash in bank accounts	$ 1,900,000