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Earnings Per Share - The denominator for the calculation of diluted earnings per share (Details)	3 Months Ended
	May 31, 2013	May 31, 2012
Earnings Per Share Tables
Denominator for basic earnings per share	14,503,010	14,459,579
Dilutive effect of stock options	56,431	110,935
Denominator for diluted earnings per share	14,559,441	14,570,514

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- Definition

Net number of share options (or share units) granted during the period.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

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

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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

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