XML 28 R43.htm IDEA: XBRL DOCUMENT v2.4.0.8
Debt (Details 4) (USD $)
Aug. 31, 2013
Long-term debt  
Limit on additional debt borrowings $ 354,230,000
Fixed rate Senior Notes | Book value
 
Long-term debt  
Fixed rate debt 100,000,000
Fixed rate Senior Notes | Fair Value, Level 2 | Discounted cash flow analysis
 
Long-term debt  
Fixed rate debt $ 103,960,000