XML 87 R73.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value Measurements (Schedule Of Financial Assets And Liabilities Measured At Fair Value) (Details) - USD ($)
$ in Thousands
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents $ 121,620 $ 101,246 $ 139,093 $ 171,842
Derivative assets 9 73    
Derivative liabilities (1,747) (595)    
Level 1 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents 121,620 101,246    
Level 2 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative assets 9 73    
Derivative liabilities (1,747) (595)    
Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Cash and cash equivalents    
Derivative assets    
Derivative liabilities