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Income Taxes	6 Months Ended
Income Taxes	May 31, 2013
Income Tax Disclosure [Abstract]
Income tax disclosure	INCOME TAXES Other than additions for current year tax positions, there were no significant changes to unrecognized tax benefits during the six months ended May 31, 2013. Income taxes for the six months ended May 31, 2013 include $1.2 million of discrete tax benefits due to the recognition of a 2012 U.S. research tax credit, which was recorded in the first quarter. A new law was enacted in 2013 that retroactively granted the credit for 2012. There were no discrete tax effects in the quarter ended May 31, 2013. Income taxes for the three and six months ended May 31, 2012 include a $1.5 million discrete tax benefit. The benefit was due to the reversal of a portion of a valuation allowance originally established against a subsidiary's net operating losses. This subsidiary established a pattern of profitability which resulted in us concluding during the second quarter of 2012 that a portion of the valuation allowance should be reversed.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

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

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details