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Debt - Narrative (Details)
9 Months Ended
Feb. 28, 2023
USD ($)
Oct. 27, 2021
USD ($)
Feb. 29, 2024
USD ($)
May 31, 2023
USD ($)
Debt (Details) [Line Items]        
Debt $ 5,200,000   $ 31,500,000 $ 6,000,000.0
Standby letters of credit     3,800,000  
Domestic Line of Credit        
Debt (Details) [Line Items]        
Standby letters of credit     (3,400,000)  
Revolving Credit Facility        
Debt (Details) [Line Items]        
Debt $ 0   $ 25,000,000.0 0
Borrowing rate     6.77%  
Standby letters of credit     $ 400,000  
Loan Agreement        
Debt (Details) [Line Items]        
Maximum borrowing capacity   $ 300,000,000.0    
Commitment fee percentage     0.20%  
Consolidated net leverage ratio, maximum   2.75    
Increase in borrowing capacity available under accordion feature   $ 150,000,000.0    
Debt Instrument, Term   5 years    
Loan Agreement | Minimum        
Debt (Details) [Line Items]        
Commitment fee percentage   0.20%    
Loan Agreement | Maximum        
Debt (Details) [Line Items]        
Commitment fee percentage   0.30%    
Loan Agreement | Swingline Facility        
Debt (Details) [Line Items]        
Maximum borrowing capacity   $ 15,000,000.0    
Loan Agreement | Revolving Credit Facility        
Debt (Details) [Line Items]        
Maximum borrowing capacity   $ 50,000,000.0    
Loan Agreement | Eurodollar        
Debt (Details) [Line Items]        
Variable rate (percentage)   1.00%    
Loan Agreement | Base Rate        
Debt (Details) [Line Items]        
Variable rate (percentage)     0.35%  
Loan Agreement | Base Rate | Minimum        
Debt (Details) [Line Items]        
Variable rate (percentage)   0.35%    
Loan Agreement | Base Rate | Maximum        
Debt (Details) [Line Items]        
Variable rate (percentage)   0.75%    
Loan Agreement | Federal Funds Rate        
Debt (Details) [Line Items]        
Variable rate (percentage)   0.50%    
Loan Agreement | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate        
Debt (Details) [Line Items]        
Variable rate (percentage) 0.10%   1.35%  
Loan Agreement | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Minimum        
Debt (Details) [Line Items]        
Variable rate (percentage) 1.35%      
Loan Agreement | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Maximum        
Debt (Details) [Line Items]        
Variable rate (percentage) 1.75%      
Unsecured Debt | Domestic Line of Credit        
Debt (Details) [Line Items]        
Borrowing capacity     $ 10,000,000.0  
Short-term debt $ 0   0 0
Remaining borrowing capacity     $ 6,600,000  
Expiration period (in days)     365 days  
Unsecured Debt | Line of Credit        
Debt (Details) [Line Items]        
Borrowing capacity     $ 23,600,000  
Debt $ 5,200,000   6,500,000 $ 6,000,000.0
Remaining borrowing capacity     $ 17,100,000  
Weighted average interest rate (percentage) 5.00%   3.80% 4.90%
Expiration period (in days)     364 days