Annual report pursuant to Section 13 and 15(d)

U.S. Pension Plan Investment Allocations by Asset Category (Detail)

v3.22.2.2
U.S. Pension Plan Investment Allocations by Asset Category (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2020
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 31,166 $ 39,696  
Percentage of fair value of pension plan assets 100.00% 100.00%  
Foreign Plan Member      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 6,208 $ 9,396 $ 8,980
Defined Benefit Plan, Plan Assets, Benefits Paid $ 680 $ 293  
Fixed Income Securities      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Percentage of fair value of pension plan assets 52.20% 71.50%  
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount $ 16,247 $ 28,389  
Fixed Income Securities | Corporate Bond Securities | Fair Value, Inputs, Level 2      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 0 $ 0  
Percentage of fair value of pension plan assets 0.00% 0.00%  
Fixed Income Securities | Mutual Funds | Fair Value, Inputs, Level 1      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 11,395 $ 23,564  
Percentage of fair value of pension plan assets 36.60% 59.30%  
Fixed Income Securities | US Treasury Securities | Fair Value, Inputs, Level 2      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 4,852 $ 4,825  
Percentage of fair value of pension plan assets 15.60% 12.20%  
Cash and cash equivalents | Fair Value, Inputs, Level 1      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 0 $ 0  
Percentage of fair value of pension plan assets 0.00% 0.00%  
Equity Securities | Mutual Funds | Fair Value, Inputs, Level 1      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount $ 14,888 $ 11,258  
Percentage of fair value of pension plan assets 47.70% 28.40%  
Income Receivable      
Schedule of Pension Plan Assets by Fair Value [Line Items]      
Defined Benefit Plan, Plan Assets, Amount   $ 49  
Percentage of fair value of pension plan assets 0.10% 0.10%  
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Amount $ 31