Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.21.2
Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Aug. 31, 2019
Aug. 31, 2018
Significant Accounting Policies [Line Items]        
Portion of inventory determined using last-in, first-out ("LIFO") method 48.40% 44.10%    
Inventory LIFO reserve $ 15,900 $ 10,200    
Depreciation Expense 13,400 12,400 $ 11,300  
Standard and Extended Product Warranty Accrual 1,300 892 1,145  
Standard and Extended Product Warranty Accrual, Increase for Warranties Issued 1,580 677    
Standard and Extended Product Warranty Accrual, Decrease for Payments (1,171) (934)    
Standard and Extended Product Warranty Accrual, Decrease for Business Divestitures 0 (27)    
Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) (1) 31    
Accounts Receivable, allowance for doubtful accounts 4,200 5,000    
Research and development costs 7,400 7,300 9,300  
Foreign exchange transaction (gains)/losses 1,800 2,600 200  
Other Income   (4,900)    
Interest Income, Other 700 800 700  
AOCI - Foreign currency translation adjustments, net of tax 69,986 75,896    
AOCI - Pension and other postretirement benefit plans, net of tax (22,998) (24,750)    
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax 0 78    
Accumulated other comprehensive loss 412,198 359,226 301,179 $ 558,712
Operating Lease, Right-of-Use Asset 51,589 48,733    
Retained earnings $ 953,339 917,671    
Minimum | Buildings and improvements        
Significant Accounting Policies [Line Items]        
Property, plant and equipment useful life 10 years      
Minimum | Machinery and equipment        
Significant Accounting Policies [Line Items]        
Property, plant and equipment useful life 2 years      
Maximum | Buildings and improvements        
Significant Accounting Policies [Line Items]        
Property, plant and equipment useful life 40 years      
Maximum | Machinery and equipment        
Significant Accounting Policies [Line Items]        
Property, plant and equipment useful life 15 years      
Accumulated Other Comprehensive Loss        
Significant Accounting Policies [Line Items]        
Accumulated other comprehensive loss $ (92,984) $ (100,724) $ (171,672) $ (174,245)