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Long-term Debt - Schedule of Net Carrying Amount of Long-term Debt Instruments (Parenthetical) (Details)
€ in Thousands, $ in Thousands, $ in Thousands
6 Months Ended
Nov. 30, 2021
USD ($)
Nov. 30, 2021
EUR (€)
Nov. 30, 2021
CAD ($)
Nov. 30, 2021
EUR (€)
Credit Facility Due in November 2022 | Canadian Prime Interest Rate        
Debt Instrument [Line Items]        
Credit facility amount     $ 80,000  
Debt instrument term 3 years 3 years    
Debt instrument amortization period 10 years 10 years    
Term Loan Due in July 2023 | Canadian Five Year Bond Interest Rate Plus 2.73        
Debt Instrument [Line Items]        
Credit facility amount     $ 25,000  
Debt instrument term 5 years 5 years    
Debt instrument amortization period 15 years 15 years    
Debt instrument interest rate percentage 2.73%   2.73% 2.73%
Term Loan Due in July 2023 | Canadian Five Year Bond Interest Rate Plus 2.73 | Minimum        
Debt Instrument [Line Items]        
Debt instrument interest rate percentage 4.50%   4.50% 4.50%
Term Loan Due in April 2022        
Debt Instrument [Line Items]        
Credit facility amount     $ 25,000  
Debt instrument term 5 years 5 years    
Debt instrument amortization period 15 years 15 years    
Debt instrument interest rate percentage 3.95%   3.95% 3.95%
Repayment of instalments including interest $ 188      
Term Loan Due in August 2026        
Debt Instrument [Line Items]        
Credit facility amount     $ 1,250  
Debt instrument term 5 years 5 years    
Debt instrument amortization period 10 years 10 years    
Debt instrument interest rate percentage 3.85%   3.85% 3.85%
Repayment of instalments including interest $ 13      
Mortgage Payable due in August 2026        
Debt Instrument [Line Items]        
Credit facility amount     $ 3,750  
Debt instrument term 5 years 5 years    
Debt instrument amortization period 20 years 20 years    
Debt instrument interest rate percentage 3.85%   3.85% 3.85%
Repayment of instalments including interest $ 23      
Vendor-Take-Back Mortgage Due in June 2021        
Debt Instrument [Line Items]        
Credit facility amount     $ 2,850  
Debt instrument term 5 years 5 years    
Debt instrument interest rate percentage 6.75%   6.75% 6.75%
Repayment of instalments including interest $ 56      
Term Loan Due in December 2023 | Euro Interbank Offered Rate Plus 1.79%        
Debt Instrument [Line Items]        
Credit facility amount | €       € 5,000
Debt instrument term 5 years 5 years    
Debt instrument interest rate percentage 1.79%   1.79% 1.79%
Repayment of instalments including interest | €   € 250    
Term Loan Due in December 2023 | Euro Interbank Offered Rate Plus 2.68%        
Debt Instrument [Line Items]        
Credit facility amount | €       € 5,000
Debt instrument term 5 years 5 years    
Debt instrument interest rate percentage 2.68%   2.68% 2.68%
Repayment of instalments including interest | €   € 250    
Term Loan Due in April 2025 | Euro Interbank Offered Rate Plus 2.00%        
Debt Instrument [Line Items]        
Credit facility amount | €       € 1,500
Debt instrument term 5 years 5 years    
Debt instrument interest rate percentage 2.00%   2.00% 2.00%
Repayment of instalments including interest | €   € 98    
Term Loan Due in June 2025 | Euro Interbank Offered Rate Plus 2.00%        
Debt Instrument [Line Items]        
Credit facility amount | €       € 1,500
Debt instrument term 5 years 5 years    
Debt instrument interest rate percentage 2.00%   2.00% 2.00%
Repayment of instalments including interest | €   € 98    
Term Loan Due in March 2024 | EURIBOR        
Debt Instrument [Line Items]        
Credit facility amount $ 100,000      
Debt instrument term 3 years 3 years    
Long-term debt, repayments of principal in next rolling twelve months $ 7,500      
Long-term debt, repayments of principal in rolling year two 10,000      
Long-term debt, repayments of principal in rolling year three $ 10,000