Pension Plan (Details Textual) (USD $)	12 Months Ended
Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Defined Benefit Plan Disclosure [Line Items]
Expected Contribution	$ 3,000,000	$ 3,000,000
Pension Plan (Textual) [Abstract]
Matching contributions	815,000	576,000	376,000
Employees covered under Non Contributory Pension Plan	9.00%
Compensation period preceding retirement and termination	5 years
Company estimates the long-term rate of return on plan assets	8.00%
Target asset allocation, historical period	10 years
Target asset allocation, expected returns	5 years
United States employees contribution	100.00%
Profit sharing contributions	258,000	268,000	289,000
Expected rate of return	8.00%	8.00%	8.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Contribution	3,000,000
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Contribution	$ 2,000,000

Defined benefit plan benefit recognition compensation period.

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- Definition

Defined benefit plan target asset allocation expected return period.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan target asset allocation historical return period.

+ References

No definition available.

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- Definition

Defined benefit plan target plan asset allocation expected long term return on assets.

+ References

No definition available.

+ Details

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- Definition

Defined contribution plan profit sharing contributions.

+ References

No definition available.

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- Details

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- Definition

Percentage of employees covered.

+ References

No definition available.

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 264

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph j

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Maximum percentage of employee gross pay, by the terms of the plan, that the employer may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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