Quarterly report pursuant to Section 13 or 15(d)

Derivatives Narrative (Details)

v3.21.2
Derivatives Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
May 31, 2021
May 31, 2020
May 31, 2021
May 31, 2020
Aug. 31, 2020
Derivative [Line Items]          
Foreign Currency Contract, Liability/Asset, Fair Value Disclosure $ (200)   $ (200)   $ (200)
Loss on Foreign Currency Fair Value Hedge Derivatives and Not Designated as Hedging Instruments at Fair Value 7 $ (842) 67 $ (1,393)  
London Interbank Offered Rate (LIBOR)          
Derivative [Line Items]          
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months (100)        
Long-term Debt 140,000   140,000   180,000
Cash Flow Hedge Gain (Loss) Recorded in Other Comprehensive Income 100   100    
Fair Value Hedging [Member]          
Derivative [Line Items]          
Derivative, Fair Value, Net 16,000   16,000   $ 16,700
Interest Rate Swap [Member] | London Interbank Offered Rate (LIBOR)          
Derivative [Line Items]          
Derivative, Amount of Hedged Item $ 100,000   $ 100,000    
Derivative, Fixed Interest Rate 0.259%   0.259%