Annual report pursuant to Section 13 and 15(d)

Derivatives - Additional Information (Details)

v3.19.3
Derivatives - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Derivative [Line Items]      
Gain (Loss) on Foreign Currency Fair Value Hedge Derivatives $ (292) $ 249 $ (3,113)
Fair Value, Inputs, Level 2      
Derivative [Line Items]      
Foreign Currency Contracts Net Assets (Liabilities) Fair Value Disclosure 100 400  
Fair Value Hedging [Member]      
Derivative [Line Items]      
Derivative, Notional Amount $ 13,300 $ 11,900