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Restructuring Costs (Narrative) (Details)
 3 Months Ended 9 Months Ended 21 Months Ended
May 31, 2025
USD ($)
item
Nov. 30, 2024
USD ($)
item
May 31, 2024
USD ($)
May 31, 2025
USD ($)
May 31, 2024
USD ($)
May 31, 2025
USD ($)
Restructuring Cost and Reserve [Line Items]            
Restructuring costs $ 4,739,000 $ 2,000,000.0 $ 701,000 $ 6,723,000 $ 3,008,000 $ 6,700,000
Number of workforce reduced | item 45 35        
Expected Payment During Fourth Quarter Fiscal 2025 [Member]            
Restructuring Cost and Reserve [Line Items]            
Accrued restructuring costs $ 4,700,000     4,700,000   4,700,000
Payment During Second Quarter Fiscal 2025 [Member]            
Restructuring Cost and Reserve [Line Items]            
Accrued restructuring costs 0     $ 0   $ 0
North America Segment [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs 3,800,000 $ 1,600,000        
International Direct Office [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs 200,000 $ 400,000        
International Licensees Segment [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs 100,000          
Education Practice [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring costs $ 600,000