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Derivatives Derivatives (Tables)
 3 Months Ended
Nov. 30, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivative Instruments, Gain (Loss) [Table Text Block]
Net foreign currency losses related to these derivative instruments are as follows (in thousands):
 
Three Months Ended November 30,
 
2016
 
2015
Foreign currency loss
$
(1,491
)
 
$
(1,696
)