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Financial Instruments and Risk Management - Interest Rate Risk (Details) $ in Thousands | Aug. 31, 2015 USD ($)
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Financial instruments and risk management |
Floating rate debt | $ 419,310
3.90% unsecured Senior Notes payable |
Financial instruments and risk management |
Fixed rate debt | $ 60,000
Fixed interest rate (as a percent) | 3.90%

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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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