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Debt - Schedule of Short-term and Long-term Borrowings (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2025
Aug. 31, 2024
Debt Instrument [Line Items]    
Total borrowings $ 86,995 $ 94,636
Short-term portion of borrowings (800) (8,659)
Total long-term borrowings $ 86,195 85,977
Series A Notes    
Debt Instrument [Line Items]    
Interest rate 3.39%  
Issuance Nov. 15, 2017  
Total borrowings $ 14,000 14,800
Short term portion of long-term debt 800  
Periodic payment amount 400  
Remaining principal payment $ 8,400  
Series B Notes    
Debt Instrument [Line Items]    
Interest rate 2.50%  
Issuance Sep. 30, 2020  
Total borrowings $ 26,000 26,000
Series C Notes    
Debt Instrument [Line Items]    
Interest rate 2.69%  
Issuance Sep. 30, 2020  
Total borrowings $ 26,000 26,000
Credit Agreement - revolving credit facility    
Debt Instrument [Line Items]    
Total borrowings 20,995 27,836
Total long-term borrowings $ 21,000 20,000
Short term portion of long-term debt   $ 7,800