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Credit Arrangements (Narrative) (Details)
12 Months Ended
Sep. 08, 2021
USD ($)
Jun. 30, 2025
USD ($)
Jun. 03, 2025
USD ($)
Short-term Debt [Line Items]      
Letters of credit outstanding   $ 0  
Credit Agreement [Member] | Wells Fargo Bank N.A. [Member]      
Short-term Debt [Line Items]      
Interest rate 1.50%    
Basis spread on interest rate 1.25%    
Effective interest rate   5.76%  
Debt term 5 years    
Fixed coverage ratio   1  
Credit Agreement [Member] | Wells Fargo Bank N.A. [Member] | Maximum [Member]      
Short-term Debt [Line Items]      
Credit agreement capacity $ 85,000,000   $ 55,000,000
Credit Agreement [Member] | Wells Fargo Bank N.A. [Member] | SOFR [Member] | Minimum [Member]      
Short-term Debt [Line Items]      
Basis spread on interest rate   1.36%  
Credit Agreement [Member] | Wells Fargo Bank N.A. [Member] | SOFR [Member] | Maximum [Member]      
Short-term Debt [Line Items]      
Basis spread on interest rate   1.61%  
Credit Agreement [Member] | Wells Fargo Bank N.A. [Member] | Letter Of Credit [Member]      
Short-term Debt [Line Items]      
Credit agreement capacity $ 5,000,000    
Secured Credit Agreement [Member] | Wells Fargo Bank N.A. [Member]      
Short-term Debt [Line Items]      
Line of credit outstanding   $ 900,000