Quarterly report pursuant to Section 13 or 15(d)

Derivatives Narrative (Details)

v3.19.1
Derivatives Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2019
Feb. 28, 2018
Aug. 31, 2018
Derivative [Line Items]          
Foreign Currency Contract, Asset, Fair Value Disclosure $ 79   $ 79   $ 396
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives and Not Designated as Hedging Instruments at Fair Value 297 $ (74) 667 $ 140  
Fair Value Hedging [Member]          
Derivative [Line Items]          
Derivative, Notional Amount $ 19,600   $ 19,600   $ 17,000