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 6 Months Ended
Feb. 28, 2017
Feb. 29, 2016
Feb. 28, 2017
Feb. 29, 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 $ (474) $ 1,062 $ (1,966) $ (634)  
Fair Value Hedging [Member]          
Derivative [Line Items]          
Derivative, Notional Amount $ 38,700   $ 38,700   $ 143,400