Quarterly report pursuant to Section 13 or 15(d)

Long-Term Indebtedness (Detail)

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Long-Term Indebtedness (Detail) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2012
Aug. 31, 2012
Apr. 16, 2012
Debt Instrument [Line Items]      
Senior Credit Facility $ 96,250 $ 97,500  
Total Senior Indebtedness 396,250 397,500  
Less: current maturities of long-term debt (8,750) (7,500)  
Total long-term debt 387,500 390,000  
Senior Credit Facility - Term Loan
     
Debt Instrument [Line Items]      
Senior Credit Facility 96,250 97,500  
5.625% Senior Notes
     
Debt Instrument [Line Items]      
Senior Notes $ 300,000 $ 300,000 $ 300,000