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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)
 1 Months Ended 12 Months Ended
Jan. 31, 2024
USD ($)
Aug. 31, 2025
USD ($)
award
property
shares
Aug. 31, 2024
USD ($)
shares
Aug. 31, 2023
USD ($)
shares
Tax Receivables [Line Items]        
Money market funds, at fair value   $ 32,100,000 $ 7,000,000  
Goodwill   43,238,000 43,197,000 $ 43,110,000
Income taxes receivable   $ 48,350,000 43,767,000  
Number of countries with significant VAT receivable balance | property   1    
Value added tax receivable, receivables       2,300,000
Payments to acquire property, plant, and equipment $ 33,000,000 $ 158,134,000 168,545,000 142,511,000
Decrease in operating lease, right-of-use asset 8,200,000      
Decrease in operating lease, liability net of tax 9,100,000      
Property, plant and equipment, gross   1,644,917,000 1,521,928,000  
Property, plant, and equipment, potential annual savings $ 1,100,000      
Long-term debt   $ 186,597,000 $ 130,360,000 $ 139,680,000
Number of types of equity awards issued | award   3    
Reissued treasury shares (in shares) | shares   65,000 3,000 6,333
Asset impairment charge   $ 0 $ 0  
Asset impairment and closure costs   0 0 $ 5,658,000
Via Brasil Club        
Tax Receivables [Line Items]        
Debt instrument, term 15 years      
Interest payable, current   1,000,000    
Panama subsidiary | Short-term Borrowings        
Tax Receivables [Line Items]        
Long-term debt $ 16,500,000      
Land        
Tax Receivables [Line Items]        
Property, plant, nd equipment, percentage of allocated purchase price 88.70%      
Property, plant and equipment, gross $ 28,200,000 287,979,000 278,115,000  
Building        
Tax Receivables [Line Items]        
Property, plant, nd equipment, percentage of allocated purchase price 11.30%      
Property, plant and equipment, gross $ 3,900,000      
Leasehold Improvements        
Tax Receivables [Line Items]        
Property, plant and equipment, gross $ 8,600,000      
Two Countries        
Tax Receivables [Line Items]        
Income taxes receivable   10,500,000 10,900,000  
Deferred tax assets, net   $ 3,900,000 $ 3,400,000