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Income Taxes (Narrative) (Details) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Feb. 28, 2014 | Feb. 28, 2013 | Feb. 29, 2012 | Feb. 28, 2011
Income Taxes [Abstract] |  |  |  |
Unrecognized tax benefits, gross | $ 26,330,000 | $ 25,059,000 | $ 20,930,000 | $ 18,662,000
Unrecognized tax benefits that would impact effective tax rate, if recognized | 7,600,000 | 5,400,000 | 3,900,000 |
Increase (decrease) in accrued interest | 300,000 | 200,000 |  |
Accrued interest | $ 1,600,000 | $ 1,300,000 | $ 1,100,000 |

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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