Quarterly report pursuant to Section 13 or 15(d)

Derivatives Narrative (Details)

v3.7.0.1
Derivatives Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2017
May 31, 2016
May 31, 2017
May 31, 2016
Aug. 31, 2016
Derivative [Line Items]          
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives and Not Designated as Hedging Instruments at Fair Value $ (484) $ (394) $ (2,450) $ (1,028)  
Fair Value Hedging [Member]          
Derivative [Line Items]          
Derivative, Notional Amount $ 43,300   $ 43,300   $ 143,400