Quarterly report pursuant to Section 13 or 15(d)

Derivatives Narrative (Details)

v3.19.2
Derivatives Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May 31, 2019
May 31, 2018
May 31, 2019
May 31, 2018
Aug. 31, 2018
Derivative [Line Items]          
Foreign Currency Contract, Asset, Fair Value Disclosure $ 148   $ 148   $ 396
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives and Not Designated as Hedging Instruments at Fair Value (90) $ 524 577 $ 664  
Fair Value Hedging [Member]          
Derivative [Line Items]          
Derivative, Notional Amount $ 21,500   $ 21,500   $ 17,000